1
00:00:00,000 --> 00:00:00,890

2
00:00:00,890 --> 00:00:03,835
>> [MUSIC kucheza]

3
00:00:03,835 --> 00:00:10,597

4
00:00:10,597 --> 00:00:12,030
>> SPIKA 1: All haki, kila mtu.

5
00:00:12,030 --> 00:00:14,330
Karibu sehemu yako ya mwisho na mimi.

6
00:00:14,330 --> 00:00:16,160
Imekuwa ni kabisa muhula.

7
00:00:16,160 --> 00:00:21,290
Siwezi kuamini hii ni, kama,
wiki 12 au 11, kitu kama hicho.

8
00:00:21,290 --> 00:00:24,520
Lakini kwa sababu ni mwisho wetu
sehemu, tuna kura ya pipi.

9
00:00:24,520 --> 00:00:27,090
Na mimi nina kwenda kujaribu na
prep ninyi kama vile mimi

10
00:00:27,090 --> 00:00:30,270
unaweza kwa jaribio yako juu ya Jumatano.

11
00:00:30,270 --> 00:00:34,060
Basi pengine si njia bora ya,
kama, mwisho sehemu na jaribio mapitio.

12
00:00:34,060 --> 00:00:35,630
Lakini tutaweza kujaribu na kufanya hivyo na furaha.

13
00:00:35,630 --> 00:00:36,720
Na kuna pipi.

14
00:00:36,720 --> 00:00:39,070
Hivyo hopefully, kwamba kutakuwa na kufanya vizuri zaidi.

15
00:00:39,070 --> 00:00:43,800
>> Jaribio yako ni kwenda kuwa pretty
kiasi kitu kimoja kama Quiz Zero.

16
00:00:43,800 --> 00:00:46,840
Ni kwenda kuwa
sawa format, urefu sawa.

17
00:00:46,840 --> 00:00:50,065
Wewe utakuwa na katika vyumba kutawanyika
hela ya chuo, kwa sababu kuna

18
00:00:50,065 --> 00:00:54,660
ni karibu na 900 wenu, na sisi hawawezi
wote kushikilia wewe katika vyumba kama hii.

19
00:00:54,660 --> 00:00:58,610
Hivyo kuwa na uhakika kuangalia yote ya
Quiz One nyaraka

20
00:00:58,610 --> 00:01:02,410
online saa cs50.harvard.edu
usiku wa leo au kesho usiku.

21
00:01:02,410 --> 00:01:06,070
Hakikisha unajua ambapo wewe ni
kwenda, nini unahitaji kuleta.

22
00:01:06,070 --> 00:01:10,052
Kweli, wewe tu haja ya kuleta mwenyewe
na kalamu, na unapaswa kuwa faini.

23
00:01:10,052 --> 00:01:11,760
maswali itakuwa
sawa sana.

24
00:01:11,760 --> 00:01:15,250
Kuna pengine kuwa wanandoa
uchaguzi nyingi, wanandoa short jibu,

25
00:01:15,250 --> 00:01:22,610
baadhi coding, labda baadhi ya kweli / uongo,
vinavyolingana aina ya mambo.

26
00:01:22,610 --> 00:01:27,790
Hivyo unapaswa kuwa pia
kushangazwa na format.

27
00:01:27,790 --> 00:01:31,380
>> Nini inaweza kuwa jambo la kushangaza ni
urefu, ambayo, katika miaka ya nyuma,

28
00:01:31,380 --> 00:01:32,970
imekuwa muda mrefu.

29
00:01:32,970 --> 00:01:38,060
Katika mwaka wangu, sina rafiki single
kwamba mimi kumbuka kumaliza mtihani.

30
00:01:38,060 --> 00:01:41,100
Kulikuwa na kama nyingi
kurasa kushoto tupu.

31
00:01:41,100 --> 00:01:43,710
Hivyo urefu inaweza kuwa
aina ya disorienting

32
00:01:43,710 --> 00:01:47,554
kwa sababu tu katika baadhi ya miaka, ina
imekuwa muda mrefu zaidi kuliko Quiz One.

33
00:01:47,554 --> 00:01:49,720
Mimi hawana wazo nini ni
kwenda kuwa kama mwaka huu,

34
00:01:49,720 --> 00:01:51,640
lakini ni kitu kuwa na ufahamu wa.

35
00:01:51,640 --> 00:01:53,390
>> Zaidi ya hayo,
watu difficulty-- huwa

36
00:01:53,390 --> 00:01:56,660
kupata Quiz One zaidi
ngumu zaidi kuliko Quiz Zero.

37
00:01:56,660 --> 00:01:58,590
Tena, unajua, kama
wewe ni aina ya kutembea

38
00:01:58,590 --> 00:02:01,590
nje hisia uneasy kidogo kwa sababu
hakuwa kufanya vizuri kama wewe walidhani

39
00:02:01,590 --> 00:02:04,430
ungependa au kujisikia kama alivyofanya si
kufanya vizuri kama alivyofanya juu ya Quiz One,

40
00:02:04,430 --> 00:02:07,429
kukumbuka kwamba kuna pengine
mengi ya watu wengine hisia kwa njia hiyo.

41
00:02:07,429 --> 00:02:09,800
Mimi ni dhahiri alikuwa mmoja wa watu hao.

42
00:02:09,800 --> 00:02:11,770
Quiz moja, kama, kurusha nami kwa kitanzi.

43
00:02:11,770 --> 00:02:14,540
Na marafiki zangu kuwa hii kubwa
picha ya yao katika JP Licks

44
00:02:14,540 --> 00:02:17,834
aina ya na hizi kubwa
sundaes, kuwa kama, Quiz One,

45
00:02:17,834 --> 00:02:19,250
na kuangalia kama wao uko katika machozi.

46
00:02:19,250 --> 00:02:21,860
>> Hivyo ni hisia kwa ujumla.

47
00:02:21,860 --> 00:02:25,257
Ni mtihani mgumu, ni jaribio mgumu.

48
00:02:25,257 --> 00:02:28,340
Ni wazi, kama wewe kuja nje na wewe
kujisikia kama wewe inakabiliwa hayo, kubwa kwa ajili yenu.

49
00:02:28,340 --> 00:02:32,050
Lakini tunajua kwamba wewe pengine not--
wewe ni karibu zaidi dhahiri si

50
00:02:32,050 --> 00:02:36,020
peke yake kama wewe kutembea nje hisia kama,
eh, pengine inaweza kuwa na kujipatia bora.

51
00:02:36,020 --> 00:02:37,003
Ni ngumu.

52
00:02:37,003 --> 00:02:37,503
Mm-hm.

53
00:02:37,503 --> 00:02:39,120
>> Watazamaji: Ni kiasi gani ni thamani
kuhusiana na [inaudible]?

54
00:02:39,120 --> 00:02:40,411
>> SPIKA 1: Ni thamani sawa.

55
00:02:40,411 --> 00:02:41,730
Yeah.

56
00:02:41,730 --> 00:02:45,150
Lakini tena, ni pia kwenda kuwa
walioathirika na jinsi wengine darasani

57
00:02:45,150 --> 00:02:48,766
hivyo, jinsi sehemu yako hivyo,
jinsi umefanya kuboresha zaidi ya muda.

58
00:02:48,766 --> 00:02:50,390
Grading ni kidogo ya sanduku nyeusi.

59
00:02:50,390 --> 00:02:54,310
Hivyo kile idadi halisi
au asilimia kupata

60
00:02:54,310 --> 00:02:56,790
si lazima kama moja kwa moja
uhusiano na daraja

61
00:02:56,790 --> 00:02:57,790
wewe ni kwenda kupata.

62
00:02:57,790 --> 00:03:00,210
Kuna mengi ya
sababu ya kuwa na kwenda katika hiyo.

63
00:03:00,210 --> 00:03:04,090
>> Hivyo, pamoja na kwamba, tunakwenda
kwenda kwa baadhi ya mapitio quiz.

64
00:03:04,090 --> 00:03:07,600
Mimi tu kwenda kukimbia hii
kama mara ya mwisho kwa ajili yenu guys.

65
00:03:07,600 --> 00:03:10,960
Nina majibu yote
kwa jaribio moja ya mwaka jana.

66
00:03:10,960 --> 00:03:14,260
Hivyo kama wewe guys wanataka kuvuta
kuwa hadi kwenye kompyuta yako mwenyewe,

67
00:03:14,260 --> 00:03:18,100
kama wameweza kuchukuliwa mtihani huu
kabla na una maswali,

68
00:03:18,100 --> 00:03:20,090
Mimi nilikuwa kufikiri tunaweza
tu kwenda kupitia baadhi

69
00:03:20,090 --> 00:03:22,380
ya wale ngumu zaidi juu ya hilo.

70
00:03:22,380 --> 00:03:25,810
Hivyo tunaweza kuzungumza kuhusu suala hilo, labda
kupata kidogo zaidi ufahamu

71
00:03:25,810 --> 00:03:29,260
ndani ya Intuition nyuma baadhi ya
maswali haya, jinsi ya kuzitumia.

72
00:03:29,260 --> 00:03:34,420
>> Kama vile, kama mara ya mwisho,
Nina 100-slide staha

73
00:03:34,420 --> 00:03:37,760
ambayo ina kimsingi wote
ya slides kwamba mimi

74
00:03:37,760 --> 00:03:40,360
kuwa tayari kwa ajili uliopita
sehemu tangu jana quiz-- mimi yako

75
00:03:40,360 --> 00:03:41,540
kuwa katika staha hii.

76
00:03:41,540 --> 00:03:43,960
Hivyo tunaweza kwenda kwa
pretty kiasi chochote

77
00:03:43,960 --> 00:03:46,450
kwamba tumekuwa aliyesema kuhusu
kabla kwamba labda wewe

78
00:03:46,450 --> 00:03:49,130
wanataka ufafanuzi zaidi kidogo juu.

79
00:03:49,130 --> 00:03:50,320
Tunaweza kufanya kwamba kwanza.

80
00:03:50,320 --> 00:03:52,567
>> Lakini vinginevyo, mimi nina super
furaha tu aina ya kazi

81
00:03:52,567 --> 00:03:53,900
njia ya matatizo hayo pamoja nawe.

82
00:03:53,900 --> 00:03:58,700
Na mimi nina kweli hapa
kuzingatia nini guys kufikiri

83
00:03:58,700 --> 00:04:01,466
itakuwa muhimu zaidi kwa kuzingatia.

84
00:04:01,466 --> 00:04:03,466
Kama, ni wazi, yote ya
mambo haya ni muhimu.

85
00:04:03,466 --> 00:04:07,444

86
00:04:07,444 --> 00:04:10,610
Hasa kama sisi kwenda kwa njia ya Quiz One,
Mimi utakuwa dhahiri kumweka nje mambo kama,

87
00:04:10,610 --> 00:04:13,380
oh, hii inaweza kuwa kitu
wewe kweli unataka kujua

88
00:04:13,380 --> 00:04:15,170
au unataka kuwa juu ya kudanganya karatasi yako.

89
00:04:15,170 --> 00:04:18,100
Mimi itakuwa nawaambia mambo
kama sisi aina ya kwenda kupitia.

90
00:04:18,100 --> 00:04:22,079
>> Kadhalika kumbuka kwamba, kuna mambo yoyote
kwamba wewe guys ungependa kwenda juu?

91
00:04:22,079 --> 00:04:26,050
Pia, kama sina ni katika staha yangu,
tunaweza kuvuta up kitu kwenye mtandao,

92
00:04:26,050 --> 00:04:28,340
au tunaweza kujaribu na kufanya
up mfano juu ya kuruka.

93
00:04:28,340 --> 00:04:32,756
Lakini dhana yoyote kwamba
guys ni kidogo fuzzy juu.

94
00:04:32,756 --> 00:04:33,880
[? Brian,?] Ulienda have--

95
00:04:33,880 --> 00:04:36,134
>> Watazamaji: Oh, ni nyongeza?

96
00:04:36,134 --> 00:04:38,300
Kama, ni mambo ya juu Quiz
Zero kwenda kuwa juu hapa?

97
00:04:38,300 --> 00:04:41,100
>> SPIKA 1: Ni nyongeza,
lakini ni mengi zaidi

98
00:04:41,100 --> 00:04:44,330
ya msisitizo juu ya mambo
tangu jaribio yako ya mwisho.

99
00:04:44,330 --> 00:04:48,410
Hivyo ni wazi, wewe guys kuwa
kujifunza kuhusu vigezo, na loops,

100
00:04:48,410 --> 00:04:49,380
na conditionals.

101
00:04:49,380 --> 00:04:52,030
Na si kama wale tu
kwenda mbali, kwa sababu wao ni

102
00:04:52,030 --> 00:04:55,210
wazi asili ya kila kitu
kingine kwamba tumejifunza sasa.

103
00:04:55,210 --> 00:04:58,560

104
00:04:58,560 --> 00:05:01,260
>> Kunaweza kuwa na swali
juu ya kila aina, au kuna

105
00:05:01,260 --> 00:05:03,710
inaweza kuwa swali
juu ya utafutaji tofauti.

106
00:05:03,710 --> 00:05:07,000
Au huenda kuna wanandoa
maswali juu ya labda kitu

107
00:05:07,000 --> 00:05:09,230
kuwa na kufanya na kuandaa
au makosa mbalimbali.

108
00:05:09,230 --> 00:05:12,360
Lakini kama wewe Tumeangalia katika
Quiz mmoja kutoka mwaka jana,

109
00:05:12,360 --> 00:05:15,870
utasikia taarifa kwamba ni
sana kulenga mambo

110
00:05:15,870 --> 00:05:18,710
ambayo yametokea tangu jaribio yako ya mwisho.

111
00:05:18,710 --> 00:05:20,270
>> Kwa nini ni mlango kwamba daima imefungwa?

112
00:05:20,270 --> 00:05:21,555
Ni kweli ananisumbua.

113
00:05:21,555 --> 00:05:25,310
Kwa sababu mimi daima kujaribu kwenda kwa njia hiyo.

114
00:05:25,310 --> 00:05:28,450
>> Hivyo kwamba kiasi pretty
jinsi jaribio itakuwa.

115
00:05:28,450 --> 00:05:32,360
Hivyo kuna dhana yoyote ambayo
nyie ungependa kwenda juu?

116
00:05:32,360 --> 00:05:35,210
Au tunaweza kuruka haki katika
tu kuangalia Quiz One

117
00:05:35,210 --> 00:05:39,570
kuanzia mwaka jana na aina ya kwenda
kupitia maswali mazoezi huko.

118
00:05:39,570 --> 00:05:41,220
Sisi pia unaweza kubadili na kurudi.

119
00:05:41,220 --> 00:05:43,130
Hii si wakati mmoja aina ya kitu.

120
00:05:43,130 --> 00:05:46,367

121
00:05:46,367 --> 00:05:46,950
Maswali yoyote?

122
00:05:46,950 --> 00:05:49,688

123
00:05:49,688 --> 00:05:50,188
Ndiyo.

124
00:05:50,188 --> 00:05:51,950
>> Watazamaji: Naweza kuuliza
swali kuhusu another--

125
00:05:51,950 --> 00:05:52,950
>> SPIKA 1: Mwingine?

126
00:05:52,950 --> 00:05:54,500
>> Watazamaji: Hii ni kutoka mwaka mwingine.

127
00:05:54,500 --> 00:05:54,756
>> SPIKA 1: Yeah.

128
00:05:54,756 --> 00:05:56,068
Sisi pia unaweza kufanya mwaka mwingine.

129
00:05:56,068 --> 00:05:57,820
>> Watazamaji: OK.

130
00:05:57,820 --> 00:05:58,710
Kadhalika 2011.

131
00:05:58,710 --> 00:06:00,135
>> SPIKA 1: 2011.

132
00:06:00,135 --> 00:06:02,880
Ooh, kwamba ilikuwa mwaka kabla yangu.

133
00:06:02,880 --> 00:06:04,032
Hebu kuvuta hii up.

134
00:06:04,032 --> 00:06:04,934
>> Watazamaji: nadhani.

135
00:06:04,934 --> 00:06:07,920

136
00:06:07,920 --> 00:06:12,842
>> SPIKA 1: Jambo hili
uwiano ni kutupa mimi mbali.

137
00:06:12,842 --> 00:06:14,435
>> Watazamaji: 11 na 12.

138
00:06:14,435 --> 00:06:16,637
>> SPIKA 1: 11 na 12.

139
00:06:16,637 --> 00:06:17,415
OK.

140
00:06:17,415 --> 00:06:18,790
Naam, hapa, kwa nini sio sisi kufanya hili?

141
00:06:18,790 --> 00:06:22,390
You guys-- kila mtu tu kuchukua michache
ya dakika kuangalia njia ya Quizzes.

142
00:06:22,390 --> 00:06:23,759
Na tutaweza kukusanya orodha.

143
00:06:23,759 --> 00:06:25,050
Na kisha tutaweza kwenda kwa njia yao.

144
00:06:25,050 --> 00:06:25,990
Wote haki?

145
00:06:25,990 --> 00:06:28,530
Wakati mimi kupata rundo
ya mambo haya kuanzisha.

146
00:06:28,530 --> 00:06:29,440
OK.

147
00:06:29,440 --> 00:06:31,850
Mimi tu kwenda kuandika
mambo ya chini juu ya karatasi.

148
00:06:31,850 --> 00:06:47,460

149
00:06:47,460 --> 00:07:36,009
>> 2011, 11 na 12?

150
00:07:36,009 --> 00:07:38,880
Mimi tu kwenda na mabadiliko ya kuonyesha hii.

151
00:07:38,880 --> 00:07:39,380
OK.

152
00:07:39,380 --> 00:07:40,320
Hiyo ni bora.

153
00:07:40,320 --> 00:07:45,490

154
00:07:45,490 --> 00:07:47,700
Hii juu.

155
00:07:47,700 --> 00:08:04,632

156
00:08:04,632 --> 00:08:06,130
Wote haki.

157
00:08:06,130 --> 00:08:08,590
>> Mtu mwingine yoyote kwamba
Ningependa kuanza na?

158
00:08:08,590 --> 00:08:11,270

159
00:08:11,270 --> 00:08:20,360
Pia, alisahau kusema, kama unataka zaidi
rundo la watu kuzungumza saa wewe

160
00:08:20,360 --> 00:08:23,182
na tu kutoa ufa
Bila shaka katika wiki sita iliyopita,

161
00:08:23,182 --> 00:08:24,890
sisi ni mbio mapitio
kikao kutoka 7:00

162
00:08:24,890 --> 00:08:29,580
kwa 8:30 usiku katika Northwest
B103, ambayo pia kilichotokea

163
00:08:29,580 --> 00:08:34,219
mara ya mwisho, ambapo ni kwenda
kuwa mimi, Hana, Daven, pamoja na Gabe

164
00:08:34,219 --> 00:08:38,799
na Rob aina ya kusaidia kutoka
wakati wa aina tu ya kutupa wote

165
00:08:38,799 --> 00:08:41,630
habari kwamba wewe nguvu
wanataka kuwa juu ya kudanganya karatasi yako,

166
00:08:41,630 --> 00:08:43,101
kufyeka, kujua kwa ujumla huko.

167
00:08:43,101 --> 00:08:44,600
Watazamaji: Hiyo pia online, haki?

168
00:08:44,600 --> 00:08:45,766
SPIKA 1: Ni pia online.

169
00:08:45,766 --> 00:08:48,500
Hivyo unaweza pia kukaa nje ya hii
hali ya hewa icky, kwenda Dorm yako,

170
00:08:48,500 --> 00:08:50,620
na kuishi-mkondo ni kama Ningependa.

171
00:08:50,620 --> 00:08:52,420
Mimi nina uhakika mengi ya
people-- Mimi najua napenda

172
00:08:52,420 --> 00:08:55,541
kuwa kufanya hivyo kama ningekuwa katika viatu yako.

173
00:08:55,541 --> 00:08:56,040
OK.

174
00:08:56,040 --> 00:08:59,152
Hivyo kwa nini sio sisi kuanza with--
wakati wewe guys-- hopefully,

175
00:08:59,152 --> 00:09:00,110
wewe ni kuangalia kwa njia ya.

176
00:09:00,110 --> 00:09:03,068
Kama si, mimi ili tu kuanza kufanya kazi
kupitia mambo mbalimbali juu ya Quiz One

177
00:09:03,068 --> 00:09:05,490
kuanzia mwaka jana isipokuwa wewe
una maswali maalum.

178
00:09:05,490 --> 00:09:09,740
>> Tutaweza kuanza na hii
swali hapa kuhusu mwingi.

179
00:09:09,740 --> 00:09:17,940
Hivyo haina kila mtu kukumbuka
namna ya nini stack ni?

180
00:09:17,940 --> 00:09:21,760
Jinsi sisi huwa to-- yeyote anaweza kutoa tu
mimi maelezo ya jumla ya stack?

181
00:09:21,760 --> 00:09:23,300
aina ya muundo data.

182
00:09:23,300 --> 00:09:23,900
OK.

183
00:09:23,900 --> 00:09:25,650
Hivyo ni moja ya
miundo data kwamba sisi

184
00:09:25,650 --> 00:09:30,620
wanatarajia kuwa familiar with-- kama
mwingi, arrays, foleni, kadhalika.

185
00:09:30,620 --> 00:09:31,120
Ndiyo.

186
00:09:31,120 --> 00:09:33,005
>> Watazamaji: Kama Kwanza
Katika, jana Out, kitu fulani.

187
00:09:33,005 --> 00:09:34,810
>> SPIKA 1: Ni Kwanza Katika, Kati mwisho.

188
00:09:34,810 --> 00:09:35,310
Hasa.

189
00:09:35,310 --> 00:09:37,830
Hivyo stack ni hasa
nini sisi huwa na kufikiri

190
00:09:37,830 --> 00:09:39,720
kuhusu wakati sisi kufikiri
ya stack ya mambo.

191
00:09:39,720 --> 00:09:41,024
Hivyo stack ya sahani.

192
00:09:41,024 --> 00:09:43,440
sahani ya kwanza kuweka chini
ni kwenda kuwa chini,

193
00:09:43,440 --> 00:09:45,981
na ni kwenda kuwa wa mwisho
moja kwamba wewe kuondoa mwishoni.

194
00:09:45,981 --> 00:09:47,180
Kwa sababu wao stack up.

195
00:09:47,180 --> 00:09:50,390
>> Na wewe kuchukua moja nje ya chini,
kawaida, mambo ajali na kuvunja.

196
00:09:50,390 --> 00:09:53,150
Hivyo mwingi unaweza kufikiria
tu kama stack ya sahani.

197
00:09:53,150 --> 00:09:57,707
Au mfano sisi daima kama kutumia
ni katika D kumbi, una trays,

198
00:09:57,707 --> 00:09:59,790
wao ni wote sifa juu,
na wewe kuchukua kutoka juu.

199
00:09:59,790 --> 00:10:02,880
Hivyo moja ya mwisho katika ni ya kwanza nje.

200
00:10:02,880 --> 00:10:03,580
OK.

201
00:10:03,580 --> 00:10:08,850
>> Hivyo katika kesi hapa, sisi
kuona sisi have-- Nashangaa

202
00:10:08,850 --> 00:10:14,050
kama naweza kweli zoom katika kidogo.

203
00:10:14,050 --> 00:10:15,730
Hivyo tuna hii struct hapa.

204
00:10:15,730 --> 00:10:16,520
Haki?

205
00:10:16,520 --> 00:10:20,160
Hivyo una baadhi ya struct kwamba ana
baadhi int idadi ya uwezo.

206
00:10:20,160 --> 00:10:22,960
Basi je, tunafikiri kwamba inawakilisha?

207
00:10:22,960 --> 00:10:26,190
Hii ni safu na ukubwa UWEZO.

208
00:10:26,190 --> 00:10:31,750
>> Hivyo hii kweli inawakilisha
stack yetu kwa ujumla.

209
00:10:31,750 --> 00:10:35,980
Stack yetu ni kweli tu
safu na baadhi ya simu kuweka

210
00:10:35,980 --> 00:10:39,040
yaani max wake, yaani, UWEZO wake.

211
00:10:39,040 --> 00:10:43,050
Na kisha tuna baadhi ya ukubwa int, ambayo
kufuatilia ukubwa wa stack yetu

212
00:10:43,050 --> 00:10:44,990
katika kozi
ya wakati tunayatumia.

213
00:10:44,990 --> 00:10:45,490
OK?

214
00:10:45,490 --> 00:10:50,620

215
00:10:50,620 --> 00:10:55,850
>> Katika kesi hiyo haki hapa, tunasema kwamba yetu
stack ukubwa imekuwa initialized kwa 0.

216
00:10:55,850 --> 00:10:58,190
Hivyo tuna stack tupu hivi sasa.

217
00:10:58,190 --> 00:11:01,760
Na kisha tunataka kukamilisha
utekelezaji wa pop

218
00:11:01,760 --> 00:11:05,520
vile kwamba anarudi int saa ya juu.

219
00:11:05,520 --> 00:11:08,150
Na kisha kama ni tupu,
kuirudisha hasi 1.

220
00:11:08,150 --> 00:11:09,320
OK?

221
00:11:09,320 --> 00:11:12,646
Hiyo mimi nataka wewe guys tu kufikiri
kuhusu nini sisi tupate kufanya huko.

222
00:11:12,646 --> 00:11:15,020
Nini kinaweza kuwa moja ya kwanza
mambo tunatarajia unataka kuangalia?

223
00:11:15,020 --> 00:11:17,986

224
00:11:17,986 --> 00:11:19,110
Kuna jambo kubwa hapa ni.

225
00:11:19,110 --> 00:11:24,700
Kila ni says-- kama kuna milele baadhi
Kama taarifa, kama "Kama stack ni tupu,"

226
00:11:24,700 --> 00:11:29,330
au "Kama hii anarudi null," au
"Kama hili ni chochote" - sorry.

227
00:11:29,330 --> 00:11:30,710
>> Watazamaji: Andika maelezo Kama.

228
00:11:30,710 --> 00:11:31,000
>> SPIKA 1: Haki.

229
00:11:31,000 --> 00:11:31,500
Unaweza kuandika taarifa Kama.

230
00:11:31,500 --> 00:11:34,100
Na kwamba pengine ni moja ya
mambo ya kwanza unataka kuangalia.

231
00:11:34,100 --> 00:11:34,599
OK.

232
00:11:34,599 --> 00:11:36,940
Kila wao kukupa
aina ya kama kesi kona

233
00:11:36,940 --> 00:11:39,150
kama hii, kwamba ni kawaida
moja ya mambo ya kwanza

234
00:11:39,150 --> 00:11:41,200
wewe ni kwenda kuangalia katika code yako.

235
00:11:41,200 --> 00:11:44,220
>> Pia, kitu
kutambua kwa jaribio

236
00:11:44,220 --> 00:11:48,870
ni kama una njia ufanisi
kufanya jambo fulani, kuandika ni chini.

237
00:11:48,870 --> 00:11:52,220
Kwa sababu sisi siyo grading
wewe juu ya kubuni, tuko

238
00:11:52,220 --> 00:11:54,840
grading wewe juu ya usahihi kwa Quizzes.

239
00:11:54,840 --> 00:11:59,970
Hivyo hata kama wewe kujua kwamba ni super
njia mbaya kufanya kitu lakini ni kazi,

240
00:11:59,970 --> 00:12:03,290
kuandika ni chini, OK?

241
00:12:03,290 --> 00:12:06,520
>> Literally, nimeona kids mwisho year--
kama ukiangalia moja mwaka jana,

242
00:12:06,520 --> 00:12:08,180
wao ni kama, kufanya Mario piramidi.

243
00:12:08,180 --> 00:12:12,482
Nao literally tu alifanya "magazeti,
hash, magazeti, hash, hash, magazeti, hash,

244
00:12:12,482 --> 00:12:13,242
hash, hash. "

245
00:12:13,242 --> 00:12:14,040
Lakini ni sahihi.

246
00:12:14,040 --> 00:12:18,490
Haina nini tunaambiwa ni kwa,
hivyo huwezi kuchukua pointi off.

247
00:12:18,490 --> 00:12:20,487
Kama wewe ni chini ya
waya, ni wazi, wewe

248
00:12:20,487 --> 00:12:23,820
wanataka kupata ufumbuzi zaidi ya kifahari, na
ufumbuzi zaidi ya kifahari pengine

249
00:12:23,820 --> 00:12:27,292
kuwa chini code, ambayo ina maana pengine
kuwa na nafasi kubwa ya kuwa na haki.

250
00:12:27,292 --> 00:12:29,750
Lakini kama wewe ni kama, unajua
nini, hakuna, mimi hawana muda, mimi

251
00:12:29,750 --> 00:12:32,640
kujua hii ni ufumbuzi,
si bora, kuandika.

252
00:12:32,640 --> 00:12:36,130
Na unaweza hata kuandika juu ya
upande, najua hii ni ya kutisha,

253
00:12:36,130 --> 00:12:38,135
lakini najua ni kazi.

254
00:12:38,135 --> 00:12:39,320
Hivyo tu vichwa-up.

255
00:12:39,320 --> 00:12:39,820
OK.

256
00:12:39,820 --> 00:12:42,690
>> Hivyo ni wazi, jambo la kwanza
ni kauli hii Kama.

257
00:12:42,690 --> 00:12:45,320
Basi je, tunafikiri hii Kama
taarifa hiyo ni kwenda kuwa?

258
00:12:45,320 --> 00:12:50,860
Na kwa kweli, napenda wazi
up Mtukufu mhariri wangu mkubwa.

259
00:12:50,860 --> 00:12:55,480
Mimi nina kwenda na kanuni hii na kisha
kuonyesha guys wakati ni kosa.

260
00:12:55,480 --> 00:12:57,370
Hivyo int pop.

261
00:12:57,370 --> 00:13:02,260

262
00:13:02,260 --> 00:13:03,240
OK.

263
00:13:03,240 --> 00:13:07,330
Hivyo kama tuna hii int
pop void-- hivyo ni wazi,

264
00:13:07,330 --> 00:13:13,270
hii ni baadhi ya kazi ambayo inachukua katika
chochote na anarudi integer, haki?

265
00:13:13,270 --> 00:13:18,930
Hivyo ni tu kwenda kuzungumza kuhusu
stack hii kwamba tumeunda.

266
00:13:18,930 --> 00:13:23,360
>> Hivyo tu kutafsiri hii ya mwisho
hukumu, "kama stack ni tupu,

267
00:13:23,360 --> 00:13:28,380
pop lazima kurudi hasi
1, "jinsi gani sisi kufanya hivyo?

268
00:13:28,380 --> 00:13:30,250
Hivyo Kama nini?

269
00:13:30,250 --> 00:13:35,080
Jinsi gani tunajua kwamba stack ni tupu?

270
00:13:35,080 --> 00:13:36,800
Ni kawaida tu sawa na 0.

271
00:13:36,800 --> 00:13:40,300
Stack.size sawa 0.

272
00:13:40,300 --> 00:13:42,840
Pia, mimi nina aina ya kuandika hapa kipofu.

273
00:13:42,840 --> 00:13:49,550
Hivyo kama mimi kufanya lolote typos-- oh,
pia alisahau kutaja hii.

274
00:13:49,550 --> 00:13:54,310
>> Wiki iliyopita, Mimi kabisa figured nje
nini tatizo letu ni pamoja na JavaScript.

275
00:13:54,310 --> 00:13:57,270
Je, si capitalize mimi
na D. You lazima tu

276
00:13:57,270 --> 00:14:00,070
capitalize mimi na kupata kipengele kwa Id.

277
00:14:00,070 --> 00:14:02,170
Na kwamba alikuwa makosa nzima.

278
00:14:02,170 --> 00:14:05,700
Hivyo kama wewe guys kwenda nyuma na
kweli kuangalia kwa njia ya kanuni wangu,

279
00:14:05,700 --> 00:14:09,590
kama wewe tu kufanya kila kitu a
lowercase d, "kusahau kipengele kwa Id,"

280
00:14:09,590 --> 00:14:10,410
itakuwa kazi.

281
00:14:10,410 --> 00:14:12,823
Hivyo kama mimi aliahidi, nilikuwa karibu sana.

282
00:14:12,823 --> 00:14:15,570
I just mtaji kitu
Mimi nilikuwa hawatakiwi, ambayo

283
00:14:15,570 --> 00:14:19,231
Mimi nina uhakika guys alikuwa katika pset yako ya mwisho.

284
00:14:19,231 --> 00:14:22,750
>> Hivyo kama kawaida yetu ni sawa na 0,
kile ni sisi wanatakiwa kufanya nini?

285
00:14:22,750 --> 00:14:25,100
>> Watazamaji: Kurudi hasi 1.

286
00:14:25,100 --> 00:14:28,644
>> SPIKA 1: Rejea hasi 1.

287
00:14:28,644 --> 00:14:29,450
Baridi.

288
00:14:29,450 --> 00:14:33,050
Hivyo sasa tunafanya nini?

289
00:14:33,050 --> 00:14:39,420

290
00:14:39,420 --> 00:14:41,730
Tunataka pop kitu mbali.

291
00:14:41,730 --> 00:14:45,090
Sasa hii ni kesi
ambapo tuna kitu.

292
00:14:45,090 --> 00:14:48,686
Kawaida yetu ni mkuu kuliko 1
au zaidi ya 0, haki?

293
00:14:48,686 --> 00:14:50,060
Sisi kweli kuwa kitu huko.

294
00:14:50,060 --> 00:14:54,390
Hivyo nini tunataka kufanya ni sisi
wanataka kurudi haki hapa.

295
00:14:54,390 --> 00:14:58,860
Sisi ni kwenda kusema tunataka
kurudi juu ya stack.

296
00:14:58,860 --> 00:15:00,940
OK?

297
00:15:00,940 --> 00:15:03,840
>> Hivyo jinsi gani sisi kufanya hivyo?

298
00:15:03,840 --> 00:15:06,410
Jinsi gani sisi kurudi juu ya stack?

299
00:15:06,410 --> 00:15:09,700
Kumbuka, stack yetu ni
tu safu, haki?

300
00:15:09,700 --> 00:15:12,690
Ina baadhi ya uwezo wa
kwamba tumekuwa aliyopewa yake.

301
00:15:12,690 --> 00:15:17,840
Kama tumekuwa kuweka mambo on-- au kweli,
sisi ni kwenda kuandika "kushinikiza" baada ya hii.

302
00:15:17,840 --> 00:15:21,563
Kama mambo ni katika there--
labda picha itasaidia.

303
00:15:21,563 --> 00:15:30,845

304
00:15:30,845 --> 00:15:32,120
Hm, mimi kama chaki kubwa zaidi.

305
00:15:32,120 --> 00:15:35,920

306
00:15:35,920 --> 00:15:41,000
>> Hivyo if-- na unaweza tu
kufikiri ya hii kama stack yetu.

307
00:15:41,000 --> 00:15:48,510
Hivyo hii ni 0, 1, 2.

308
00:15:48,510 --> 00:15:51,175
Mimi sijui ni kwa nini masanduku yangu
ni kupata ndogo.

309
00:15:51,175 --> 00:15:52,540
Lakini kuna.

310
00:15:52,540 --> 00:15:53,180
OK.

311
00:15:53,180 --> 00:15:59,960
>> Hivyo hii ni baadhi stack
na uwezo wa 5.

312
00:15:59,960 --> 00:16:04,470
Na hebu sema tuna kitu
hapa na tuna kitu hapa.

313
00:16:04,470 --> 00:16:10,840
Hivyo katika hatua hii, yetu
ukubwa ni sawa na nini?

314
00:16:10,840 --> 00:16:12,720
2.

315
00:16:12,720 --> 00:16:15,370
Na kama tunataka pop
kitu mbali ya hayo,

316
00:16:15,370 --> 00:16:18,720
hiyo ina maana tunataka kupata
kuepuka haki hii hapa.

317
00:16:18,720 --> 00:16:21,300
OK?

318
00:16:21,300 --> 00:16:25,633
Hivyo ni jinsi gani sisi kurudi thamani hii?

319
00:16:25,633 --> 00:16:27,397
>> Watazamaji: Size minus 1.

320
00:16:27,397 --> 00:16:28,230
>> SPIKA 1: Haki.

321
00:16:28,230 --> 00:16:35,010
Hivyo ukubwa minus 1, au
inaweza kufanya ukubwa minus minus.

322
00:16:35,010 --> 00:16:36,740
Lakini hatuwezi tu kufanya kawaida.

323
00:16:36,740 --> 00:16:38,560
Ni ndani ya struct, haki?

324
00:16:38,560 --> 00:16:42,690
Hivyo stack.struct.

325
00:16:42,690 --> 00:16:44,510
au stack.size.

326
00:16:44,510 --> 00:16:47,100
Hiyo ni index haki yetu huko.

327
00:16:47,100 --> 00:16:48,070
OK?

328
00:16:48,070 --> 00:16:56,240
>> Na kisha kama sisi kuangalia
nyuma katika struct yetu hapa,

329
00:16:56,240 --> 00:16:59,770
sisi taarifa kwamba kwa
kweli kupata safu,

330
00:16:59,770 --> 00:17:04,920
tunahitaji kufanya stack.numbers
kwa kweli kupata kwamba safu.

331
00:17:04,920 --> 00:17:09,859

332
00:17:09,859 --> 00:17:13,700
Hivyo kwamba anarudi juu ya stack.

333
00:17:13,700 --> 00:17:18,950
>> Lakini kitu that-- kama wewe guys kuangalia
jibu muhimu, hii yote ni wao

334
00:17:18,950 --> 00:17:21,470
kukupa.

335
00:17:21,470 --> 00:17:22,640
Hivyo hii ni yake.

336
00:17:22,640 --> 00:17:27,450
Lakini mimi wanaweza kusema kwamba wao ni
miss-- ooh, si nini nilitaka.

337
00:17:27,450 --> 00:17:30,864
Mimi wanaweza kusema kwamba wao ni
kukosa kitu, because-- ndiyo.

338
00:17:30,864 --> 00:17:32,030
Watazamaji: Kupungua kawaida.

339
00:17:32,030 --> 00:17:32,738
SPIKA 1: Haki.

340
00:17:32,738 --> 00:17:34,634
Tunahitaji kupungua kawaida yetu sasa.

341
00:17:34,634 --> 00:17:36,550
Basi nini Tricky kuhusu
hii ni mara ya kurudi

342
00:17:36,550 --> 00:17:38,780
kitu, kazi yako ya
kwenda exit, haki?

343
00:17:38,780 --> 00:17:44,050
Hivyo kile tupate kufanya ni kweli
kupungua ukubwa yetu ya kwanza.

344
00:17:44,050 --> 00:17:47,110
Na kisha tunaweza tu stack.size.

345
00:17:47,110 --> 00:17:52,110
>> Tunaweza tu kutumia stack.size
kama orodha yetu, hawakuweza sisi?

346
00:17:52,110 --> 00:17:55,650
Kwa sababu kama stack.size
ni 2, sisi pungufu yake.

347
00:17:55,650 --> 00:17:58,520
Na hivyo ni 1, ambayo
ni indice yetu halisi.

348
00:17:58,520 --> 00:18:03,320
Mara sisi kujikwamua hii, sisi kweli
tu kuwa kitu kimoja katika safu yetu.

349
00:18:03,320 --> 00:18:04,204
Hivyo ni gani wote.

350
00:18:04,204 --> 00:18:05,120
Watazamaji: [inaudible]?

351
00:18:05,120 --> 00:18:09,186

352
00:18:09,186 --> 00:18:14,750
>> SPIKA 1: Naam, katika kesi hii,
sisi tu akarudi kipengele

353
00:18:14,750 --> 00:18:19,500
saa ya juu kwamba ni katika yetu
ukubwa kwamba saa ya juu.

354
00:18:19,500 --> 00:18:25,530
Lakini hatujafanya chochote
ukubwa baada ya sisi kuondolewa kwamba kipengele.

355
00:18:25,530 --> 00:18:29,970
Hii haujabadilika kawaida yetu bado.

356
00:18:29,970 --> 00:18:32,410
Hii haina kweli
asili mabadiliko ya kawaida yetu.

357
00:18:32,410 --> 00:18:39,840
>> Lakini kwa kufanya hivyo wazi kidogo,
unaweza kufanya stack.size minus minus.

358
00:18:39,840 --> 00:18:46,960
Kwangu mimi, inafanya, mimi sijui,
zaidi kidogo wazi that-- ah,

359
00:18:46,960 --> 00:18:51,080
kwamba wewe ni kweli kubadilisha
ukubwa na kurudi yake.

360
00:18:51,080 --> 00:18:54,050
njia nyingine ilikuwa nzuri, kwa sababu
ungekuwa kubadilika na kurudi

361
00:18:54,050 --> 00:18:55,700
wakati huo huo.

362
00:18:55,700 --> 00:19:00,792
Lakini hii ni tu njia nyingine ya kuandika
ni kwamba nilitaka kuonyesha nyie.

363
00:19:00,792 --> 00:19:02,190
Je, hiyo mantiki?

364
00:19:02,190 --> 00:19:04,940

365
00:19:04,940 --> 00:19:06,847
Mwingi, nadhani, ni
rahisi zaidi kuliko foleni.

366
00:19:06,847 --> 00:19:08,188
[Anacheka]

367
00:19:08,188 --> 00:19:09,481

368
00:19:09,481 --> 00:19:09,980
OK.

369
00:19:09,980 --> 00:19:12,000
Je, una maswali yoyote maalum
juu ya 11 na 12, au just--

370
00:19:12,000 --> 00:19:13,736
>> Watazamaji: Nadhani ilikuwa ni stack.

371
00:19:13,736 --> 00:19:14,910
>> SPIKA 1: ukubwa stack?

372
00:19:14,910 --> 00:19:15,430
>> Watazamaji: Yeah.

373
00:19:15,430 --> 00:19:15,980
>> SPIKA 1: Gotcha.

374
00:19:15,980 --> 00:19:16,490
OK.

375
00:19:16,490 --> 00:19:19,630
Yeah, unaweza kufanya hivyo katika
moja ya njia hizi mbili.

376
00:19:19,630 --> 00:19:20,320
OK.

377
00:19:20,320 --> 00:19:22,790
>> Hivyo basi, tuna kila mmoja wetu.

378
00:19:22,790 --> 00:19:30,250

379
00:19:30,250 --> 00:19:34,220
Hii ni kweli weird, kama
kutokuwa na hii juu ya screen yangu.

380
00:19:34,220 --> 00:19:46,480

381
00:19:46,480 --> 00:19:51,030
Hivyo kama sisi kuangalia hapa, sisi sasa wanataka
kukamilisha utekelezaji wa kushinikiza,

382
00:19:51,030 --> 00:19:57,030
ambayo kwa kweli unaweka kitu, huenda
na kuwekeza kitu katika foleni yetu,

383
00:19:57,030 --> 00:19:59,390
au kwenye mkusanyiko wetu.

384
00:19:59,390 --> 00:20:00,140
OK?

385
00:20:00,140 --> 00:20:03,560
>> Hivyo kama sisi taarifa, sisi
kuwa wanandoa wa mambo.

386
00:20:03,560 --> 00:20:07,730
Tuna great-- wetu kama wote mwingine,
wakati sisi kuwa mmoja wa haya,

387
00:20:07,730 --> 00:20:10,610
nyie lazima angalau kupata nusu
uhakika, kwa sababu wote una kufanya

388
00:20:10,610 --> 00:20:15,760
ni kubadilisha huu katika C. Na
wao kukupa nusu yake.

389
00:20:15,760 --> 00:20:18,560
Hivyo "kama stack ni kamili
au ni hasi,

390
00:20:18,560 --> 00:20:20,940
basi kushinikiza lazima kurudi uongo. "

391
00:20:20,940 --> 00:20:21,890
OK?

392
00:20:21,890 --> 00:20:27,900
>> Hivyo sisi tu wanataka chanya
integers kuwa juu ya stack yetu.

393
00:20:27,900 --> 00:20:28,430
Wote haki?

394
00:20:28,430 --> 00:20:31,135
Na hii ni kwenda ama
kurudi kweli au uongo.

395
00:20:31,135 --> 00:20:36,410

396
00:20:36,410 --> 00:20:37,765
Hivyo tunapaswa [inaudible] bool.

397
00:20:37,765 --> 00:20:43,000

398
00:20:43,000 --> 00:20:43,660
OK.

399
00:20:43,660 --> 00:20:45,725
Hivyo kutafsiri.

400
00:20:45,725 --> 00:20:47,146
>> Watazamaji: [inaudible].

401
00:20:47,146 --> 00:20:48,318
>> SPIKA 1: Oh, thanks.

402
00:20:48,318 --> 00:20:49,572
Yeah.

403
00:20:49,572 --> 00:20:52,834
Hii ni kwa nini mimi na wewe guys.

404
00:20:52,834 --> 00:20:53,810
Int n.

405
00:20:53,810 --> 00:20:54,310
Perfect.

406
00:20:54,310 --> 00:20:56,590
Kwa sababu sisi ni kuweka
kitu juu ya stack yetu.

407
00:20:56,590 --> 00:20:58,750
Sisi kwa kweli haja ya baadhi ya idadi.

408
00:20:58,750 --> 00:20:59,250
OK.

409
00:20:59,250 --> 00:21:05,669
>> Hivyo tu kuchukua kwamba mstari wa mwisho kwamba
wao alitupa, aina yetu ya kona ya kesi,

410
00:21:05,669 --> 00:21:06,960
unafikiri nini sisi hapa?

411
00:21:06,960 --> 00:21:08,730
Ni wazi, tunakwenda kuwa na baadhi ya Kama.

412
00:21:08,730 --> 00:21:09,520
OK.

413
00:21:09,520 --> 00:21:14,380
Hivyo sisi akasema, Kama stack yetu ni
n full au kama ni hasi.

414
00:21:14,380 --> 00:21:18,850
Basi pengine rahisi kuanza
na, hivyo kama n ni chini ya 0

415
00:21:18,850 --> 00:21:23,960
or-- kumbuka nzuri yako
NA na AU operators huko.

416
00:21:23,960 --> 00:21:27,340
>> Jinsi gani sisi kuangalia
kuona kama stack yetu ni kamili?

417
00:21:27,340 --> 00:21:28,368
Nini kinatokea?

418
00:21:28,368 --> 00:21:30,080
>> Watazamaji: Size UWEZO sawa.

419
00:21:30,080 --> 00:21:30,871
>> SPIKA 1: Hasa.

420
00:21:30,871 --> 00:21:35,430

421
00:21:35,430 --> 00:21:36,817
Perfect.

422
00:21:36,817 --> 00:21:37,316
OK.

423
00:21:37,316 --> 00:21:40,672
Na nini tunataka kufanya huko?

424
00:21:40,672 --> 00:21:41,740
>> Watazamaji: Kurudi uongo.

425
00:21:41,740 --> 00:21:43,990
>> SPIKA 1: Kurudi uongo.

426
00:21:43,990 --> 00:21:44,960
Perfect.

427
00:21:44,960 --> 00:21:47,000
Hivyo nusu ya huko, haki?

428
00:21:47,000 --> 00:21:50,370
Kwa uchache sana, you guys
itakuwa na nusu ya hizi.

429
00:21:50,370 --> 00:21:53,280
Hivyo hebu fikiria kuhusu hili.

430
00:21:53,280 --> 00:21:57,100

431
00:21:57,100 --> 00:21:59,030
>> Hivyo hii ni stack sisi kuanza na.

432
00:21:59,030 --> 00:22:02,340
Sisi ni kujaribu kuweka
baadhi ya kipengele hapa.

433
00:22:02,340 --> 00:22:05,580
>> Tuna ukubwa kwamba
sawa na 2 hivi sasa.

434
00:22:05,580 --> 00:22:09,060
Tuna uwezo kwamba sawa na 5.

435
00:22:09,060 --> 00:22:13,470
Na hebu kusema tuna
baadhi n kwamba sawa na 3.

436
00:22:13,470 --> 00:22:18,170
Hivyo tunahitaji pembejeo 3 katika nafasi hii.

437
00:22:18,170 --> 00:22:22,320
Na tunahitaji pembejeo katika index 2.

438
00:22:22,320 --> 00:22:22,820
Haki?

439
00:22:22,820 --> 00:22:31,730

440
00:22:31,730 --> 00:22:35,130
>> Hivyo jinsi gani sisi kufanya hili?

441
00:22:35,130 --> 00:22:46,580
Kujaribu assign-- sisi
wanataka kupata safu yetu.

442
00:22:46,580 --> 00:22:49,300
Hivyo stack.numbers.

443
00:22:49,300 --> 00:22:52,932
Lakini katika kile indice ingekuwa
tunataka hii kuwa?

444
00:22:52,932 --> 00:22:54,408
>> Watazamaji: [inaudible].

445
00:22:54,408 --> 00:22:56,806
>> SPIKA 1: Yeah.

446
00:22:56,806 --> 00:22:57,305
Stack.size.

447
00:22:57,305 --> 00:23:02,720

448
00:23:02,720 --> 00:23:04,830
Na tunataka kuwa na n sawa, haki?

449
00:23:04,830 --> 00:23:05,752
>> Watazamaji: [inaudible].

450
00:23:05,752 --> 00:23:07,710
SPIKA 1: Mimi kwa kweli
tu kuangalia saa hiyo.

451
00:23:07,710 --> 00:23:09,865
Nadhani ni makosa.

452
00:23:09,865 --> 00:23:14,564
>> Watazamaji: Je, si unataka
nafasi zamani ukubwa wa sasa?

453
00:23:14,564 --> 00:23:18,842
>> SPIKA 1: Naam, kama sisi kuangalia hapa,
kawaida yetu katika hatua hii ni 2.

454
00:23:18,842 --> 00:23:25,600
Tunataka kwenda katika index 2,
kwa sababu hii ni juu ya stack yetu.

455
00:23:25,600 --> 00:23:29,480
Hivyo napenda kusema kwamba ni
lazima stack.size,

456
00:23:29,480 --> 00:23:32,380
na basi ingekuwa kuongeza stack.size.

457
00:23:32,380 --> 00:23:33,820
Je, kila mtu kukubaliana?

458
00:23:33,820 --> 00:23:35,780
Nadhani kukubaliana na kwamba.

459
00:23:35,780 --> 00:23:38,180
You guys unaweza kusema
na mimi kama Ningependa.

460
00:23:38,180 --> 00:23:40,078
Au wanasema, lakini tunaweza kujadili suala hilo.

461
00:23:40,078 --> 00:23:42,518
>> Watazamaji: [inaudible].

462
00:23:42,518 --> 00:23:47,650
>> SPIKA 1: Mm-hm, ni ambapo ni
kufungua kwa sababu ya sifuri Indexing.

463
00:23:47,650 --> 00:23:50,027
Hivyo ambapo katika sehemu ya kwanza,
Nilidhani walikuwa sahihi,

464
00:23:50,027 --> 00:23:53,910
na walikuwa kweli haki, hii
sehemu, mimi kwa kweli nadhani walikuwa na makosa.

465
00:23:53,910 --> 00:23:55,990
Napenda kusema unapaswa
dhahiri pembejeo hapa.

466
00:23:55,990 --> 00:23:58,540
Nadhani sisi wote kukubaliana
tuna kawaida ya 2.

467
00:23:58,540 --> 00:24:01,480
Hiyo ni hasa ambapo sisi
wanataka idadi wetu mpya kwenda.

468
00:24:01,480 --> 00:24:05,120
Hivyo stack.numbers katika
stack.size lazima sawa n.

469
00:24:05,120 --> 00:24:09,510
Na kisha sisi ingekuwa
increment stack.size.

470
00:24:09,510 --> 00:24:11,099
++.

471
00:24:11,099 --> 00:24:12,390
Na kisha nini tunataka kufanya?

472
00:24:12,390 --> 00:24:17,400
Kuna jambo moja iliyopita tuna
kufanya kama sisi mafanikio kuingizwa hili?

473
00:24:17,400 --> 00:24:19,190
Kurudi kweli.

474
00:24:19,190 --> 00:24:20,071
Na sasa wewe ni kosa.

475
00:24:20,071 --> 00:24:23,440

476
00:24:23,440 --> 00:24:27,765
Hivyo mimi kuhisi kama ilivyokuwa minus nzima
minus stack.size na stack.size ++ kwamba

477
00:24:27,765 --> 00:24:29,440
messed mambo up.

478
00:24:29,440 --> 00:24:29,940
Ugh.

479
00:24:29,940 --> 00:24:34,400
Mimi keep-- nina hii goti-jerk
tabia ya daima hit

480
00:24:34,400 --> 00:24:38,060
Control, S, kwa sababu mimi kamwe
wanataka kupoteza yoyote ya kazi yangu.

481
00:24:38,060 --> 00:24:39,670
Lakini mimi hawana haja ya kufanya hivyo sasa.

482
00:24:39,670 --> 00:24:40,170
OK.

483
00:24:40,170 --> 00:24:41,650
Ili kwamba ilikuwa stack.

484
00:24:41,650 --> 00:24:44,460

485
00:24:44,460 --> 00:24:46,300
Baridi.

486
00:24:46,300 --> 00:24:48,970
>> Je, kuna kitu?

487
00:24:48,970 --> 00:24:51,220
Je, guys kupata yoyote
maswali mengine ambayo wewe d

488
00:24:51,220 --> 00:24:52,810
kama kwenda juu kutoka Quizzes uliopita?

489
00:24:52,810 --> 00:24:57,660
Kama siyo, tunaweza aina ya kuanza kuzungumza
kupitia Quiz mmoja kutoka mwaka jana.

490
00:24:57,660 --> 00:24:58,160
Ndiyo.

491
00:24:58,160 --> 00:25:00,035
>> Watazamaji: Kwa mara ya kwanza
sehemu, mimi si kweli

492
00:25:00,035 --> 00:25:02,438
kuelewa jinsi gani ilifutwa simu.

493
00:25:02,438 --> 00:25:03,600
Je, si ni bado huko?

494
00:25:03,600 --> 00:25:05,100
>> SPIKA 1: idadi bado kuna.

495
00:25:05,100 --> 00:25:11,350
Lakini nini kinatokea ni kwamba kwa sababu wewe wameweza
aliiambia kwamba juu ya stack yako

496
00:25:11,350 --> 00:25:16,180
ni hapa, wakati wa kwenda kuongeza kitu
kwenye stack, hivyo itabidi tu kuchukua nafasi yake.

497
00:25:16,180 --> 00:25:17,084
>> Watazamaji: Oh, OK.

498
00:25:17,084 --> 00:25:17,750
SPIKA 1: Yeah.

499
00:25:17,750 --> 00:25:21,334
Hivyo ni kama alisahau na ni huko
aina ya kitu hata kama ni huko.

500
00:25:21,334 --> 00:25:22,750
Watazamaji: [inaudible] au kitu chochote?

501
00:25:22,750 --> 00:25:23,333
SPIKA 1: No.

502
00:25:23,333 --> 00:25:25,090
Kwa sababu tuko katika
safu, huna

503
00:25:25,090 --> 00:25:28,850
na wasiwasi about-- utasikia tu
override ni wakati unahitaji yake.

504
00:25:28,850 --> 00:25:30,560
Wote haki.

505
00:25:30,560 --> 00:25:31,560
Yoyote maswali mengine?

506
00:25:31,560 --> 00:25:34,843
Kama siyo, tunakwenda tu
kuanza kufanya kazi kwa njia ya.

507
00:25:34,843 --> 00:25:35,343
Yeah.

508
00:25:35,343 --> 00:25:40,905
>> Watazamaji: Naam, hii ni moja ya juu ya mwaka 2013,
lakini tu kwenda kwa njia ya mambo SQL.

509
00:25:40,905 --> 00:25:41,530
SPIKA 1: SQL?

510
00:25:41,530 --> 00:25:42,030
OK.

511
00:25:42,030 --> 00:25:45,290

512
00:25:45,290 --> 00:25:46,925
Hivyo hii ni 26 kwa njia ya 29.

513
00:25:46,925 --> 00:25:47,550
Watazamaji: Yeah.

514
00:25:47,550 --> 00:25:48,120
SPIKA 1: OK.

515
00:25:48,120 --> 00:25:48,620
Lovely.

516
00:25:48,620 --> 00:25:50,230
Hebu vuta wale up.

517
00:25:50,230 --> 00:25:57,560

518
00:25:57,560 --> 00:25:59,506
Oh, kuangalia.

519
00:25:59,506 --> 00:26:02,180
Je, guys kufurahia Steve
Ballmer kuzungumza, kwa njia?

520
00:26:02,180 --> 00:26:06,350
Ilikuwa pretty hilarious, kwa maoni yangu.

521
00:26:06,350 --> 00:26:09,930
I love kwamba kila wakati mimi kuleta CS50 ya
tovuti wakati sehemu, ni kama, oh,

522
00:26:09,930 --> 00:26:10,730
kuangalia sehemu.

523
00:26:10,730 --> 00:26:11,575
Na mimi nina kama, mm.

524
00:26:11,575 --> 00:26:13,100
>> Watazamaji: Je, sisi kufanya hivyo?

525
00:26:13,100 --> 00:26:15,060
>> SPIKA 1: Tutaweza kufanya hivyo mwishoni.

526
00:26:15,060 --> 00:26:15,560
Jinsi hiyo?

527
00:26:15,560 --> 00:26:17,476
Kwa sababu najua nyie
siku zote alitaka.

528
00:26:17,476 --> 00:26:18,573
Hivyo tutaweza kufanya hivyo mwishoni.

529
00:26:18,573 --> 00:26:21,884

530
00:26:21,884 --> 00:26:22,800
Maswali moja.

531
00:26:22,800 --> 00:26:24,502
>> Watazamaji: [inaudible].

532
00:26:24,502 --> 00:26:25,960
SPIKA 1: Ni utakuwa meta sehemu.

533
00:26:25,960 --> 00:26:27,332
Watazamaji: Ni kama sekunde 5.

534
00:26:27,332 --> 00:26:28,805
Watazamaji: Kweli?

535
00:26:28,805 --> 00:26:30,567
Watazamaji: Ni kama sekunde 20.

536
00:26:30,567 --> 00:26:33,260
[INTERPOSING VOICES]

537
00:26:33,260 --> 00:26:35,756
[Kicheko]

538
00:26:35,756 --> 00:26:35,931

539
00:26:35,931 --> 00:26:37,680
SPIKA 1: Mimi kama kwamba
umefanya tayari amefanya

540
00:26:37,680 --> 00:26:40,130
yake, ambayo ni nini hufanya mimi furaha.

541
00:26:40,130 --> 00:26:42,340
OK.

542
00:26:42,340 --> 00:26:42,840
26.

543
00:26:42,840 --> 00:26:43,340
OK.

544
00:26:43,340 --> 00:26:46,050

545
00:26:46,050 --> 00:26:48,930
Kweli, tunakwenda tu
kioo hii sasa, kwa sababu mimi siwezi.

546
00:26:48,930 --> 00:26:49,640
Hii ni annoying.

547
00:26:49,640 --> 00:26:56,200

548
00:26:56,200 --> 00:26:56,700
OK.

549
00:26:56,700 --> 00:27:00,254
Sasa unaweza kuona kila kitu.

550
00:27:00,254 --> 00:27:01,230
Lovely.

551
00:27:01,230 --> 00:27:02,500
OK.

552
00:27:02,500 --> 00:27:07,300
>> Hivyo ni wazi, hii lazima kuleta nyuma
kumbukumbu kubwa kutoka [? CSG?] Fedha.

553
00:27:07,300 --> 00:27:09,090
Nusu ya juu na lenu graded sasa.

554
00:27:09,090 --> 00:27:13,370
nusu nyingine nami kupata
sana, haraka sana, mimi ahadi.

555
00:27:13,370 --> 00:27:17,110
>> Hivyo tuna baadhi meza SQL
hiyo ni ya Hesabu hapa.

556
00:27:17,110 --> 00:27:19,830
Pengine sawa na
guys yako 'user meza.

557
00:27:19,830 --> 00:27:22,350
Na tuna baadhi ya idadi
kwamba ilikuwa muhimu PRIMARY

558
00:27:22,350 --> 00:27:24,750
na inawakilisha
12-tarakimu idadi ya akaunti.

559
00:27:24,750 --> 00:27:27,140
Na usawa ni kiasi gani cha fedha wao.

560
00:27:27,140 --> 00:27:30,530
Na thamani default ni 100.

561
00:27:30,530 --> 00:27:33,470
Na wao kuwapa $ 100 yoyote
muda wao kufungua akaunti.

562
00:27:33,470 --> 00:27:36,132
Napenda benki yangu alifanya hivyo.

563
00:27:36,132 --> 00:27:37,710
OK.

564
00:27:37,710 --> 00:27:41,110
>> Hivyo tunataka kukamilisha schema na
kubainisha karibu na idadi katika mizani

565
00:27:41,110 --> 00:27:43,900
sahihi ya aina SQL.

566
00:27:43,900 --> 00:27:50,240
Basi je, guys kufikiri itakuwa
aina ya kama goti-jerk yako majibu

567
00:27:50,240 --> 00:27:51,380
kwa ajili ya aina ya hizi mbili?

568
00:27:51,380 --> 00:27:52,180
>> Watazamaji: Int.

569
00:27:52,180 --> 00:27:53,450
>> SPIKA 1: int.

570
00:27:53,450 --> 00:27:54,230
OK.

571
00:27:54,230 --> 00:27:57,490
Na kisha kwa usawa?

572
00:27:57,490 --> 00:27:57,990
Alisema.

573
00:27:57,990 --> 00:27:58,490
OK.

574
00:27:58,490 --> 00:27:59,830
Hivyo haki decimal ya.

575
00:27:59,830 --> 00:28:01,450
Int ni karibu.

576
00:28:01,450 --> 00:28:08,610
Aina ya jambo kubwa ni hii
alitilia 12-tarakimu idadi ya akaunti.

577
00:28:08,610 --> 00:28:11,460
Wakati sisi kuwa na kitu
hiyo ni kubwa kuliko tarakimu nane,

578
00:28:11,460 --> 00:28:15,522
wanataka kutumia kubwa
int, ambayo nadhani is--

579
00:28:15,522 --> 00:28:18,370

580
00:28:18,370 --> 00:28:21,605
>> Watazamaji: Je, kwamba tu SQL?

581
00:28:21,605 --> 00:28:27,290
>> SPIKA 1: Ni wakati tu Nimesikia
ya ni SQL-- kama kutumia kubwa int.

582
00:28:27,290 --> 00:28:29,330
Ni tu kukupa
kidogo zaidi usahihi,

583
00:28:29,330 --> 00:28:33,070
kuhakikisha wewe si
kufurika aina kitu.

584
00:28:33,070 --> 00:28:35,910
Katika uaminifu wote, nadhani hii
ni dhahiri mmoja wa wale

585
00:28:35,910 --> 00:28:38,480
ambapo ni kama, oh,
ni maana kwa ajili ya watu

586
00:28:38,480 --> 00:28:41,090
ambao wana ujuzi zaidi kidogo ya SQL.

587
00:28:41,090 --> 00:28:44,710
Sisi kamwe alizungumzia
ints kubwa katika pset yako.

588
00:28:44,710 --> 00:28:48,210
Hivyo ni aina ya kama mimi nina uhakika pretty
kama wewe kuweka int, ilikuwa nusu mikopo.

589
00:28:48,210 --> 00:28:51,450
>> Na kama nilivyosema hapo kabla, kuna ni kwenda
kuwa baadhi ya maswali kwamba ni tu

590
00:28:51,450 --> 00:28:55,550
maana ya safari wewe juu, hivyo
kwamba si kila mtu anapata 100.

591
00:28:55,550 --> 00:28:58,326
Kwa sababu bila shaka, kuna
baadhi ya watu katika CS50

592
00:28:58,326 --> 00:29:00,950
ambao wamekuwa wakifanya hivyo kwa kama
miaka minane, na wewe ni kama,

593
00:29:00,950 --> 00:29:01,741
unafanya nini?

594
00:29:01,741 --> 00:29:03,290
Lakini yeah.

595
00:29:03,290 --> 00:29:05,650
>> Alisema kwa usawa ilikuwa dhahiri moja.

596
00:29:05,650 --> 00:29:10,910
Na kisha kubwa int kwa idadi kwa sababu tu
ya kwamba, kama, alielezea 12-tarakimu.

597
00:29:10,910 --> 00:29:16,760
Kila kitu ni katika ujasiri au ni
kusisitiza, kama, makini na hilo.

598
00:29:16,760 --> 00:29:18,940
Sisi siyo kufanya kwamba kwa sababu tu.

599
00:29:18,940 --> 00:29:20,290
OK.

600
00:29:20,290 --> 00:29:24,400
>> Hivyo "kudhani inaweka kwamba benki
$ 20 kila mwezi ada kwenye akaunti zote.

601
00:29:24,400 --> 00:29:27,850
Kwa nini swala inaweza benki
dra $ 20 kutoka kila akaunti

602
00:29:27,850 --> 00:29:31,490
hata kama ni matokeo kutoka
baadhi mizani hasi? "

603
00:29:31,490 --> 00:29:35,220
Basi hebu kuanza rahisi.

604
00:29:35,220 --> 00:29:39,240
Tuna amri kuu nne
kwa SQL, ambayo ni?

605
00:29:39,240 --> 00:29:42,620
Je guys kumbuka nne
ndio kubwa kuwa niliwaambia?

606
00:29:42,620 --> 00:29:45,710
>> UPDATE, kufuta, SELECT, na kuingiza.

607
00:29:45,710 --> 00:29:46,430
Perfect.

608
00:29:46,430 --> 00:29:46,930
Got it.

609
00:29:46,930 --> 00:29:52,910
Basi je, tunafikiri nguvu
kuwa muhimu sana kwa ajili ya hii moja?

610
00:29:52,910 --> 00:29:54,231
Sisi are-- UPDATE.

611
00:29:54,231 --> 00:29:54,730
Hasa.

612
00:29:54,730 --> 00:29:59,330
Hivyo UPDATE, kwa sababu sisi ni kuangalia
katika akaunti kwamba tayari yapo.

613
00:29:59,330 --> 00:30:03,570
>> Basi kumbuka ujumla wetu
aina ya kitu ni update.

614
00:30:03,570 --> 00:30:06,300
Na kisha nini inakuja baada UPDATE?

615
00:30:06,300 --> 00:30:09,780
Tuna baadhi ya meza
kwamba sisi ni referencing.

616
00:30:09,780 --> 00:30:17,130
Hivyo kama mimi kuvuta up Mtukufu again-- UPDATE.

617
00:30:17,130 --> 00:30:18,820
Hivyo hii ni format ujumla.

618
00:30:18,820 --> 00:30:20,800
Hivyo tuna UPDATE meza.

619
00:30:20,800 --> 00:30:23,203
Na kisha nini jambo la pili tuna?

620
00:30:23,203 --> 00:30:26,230
>> Unaweza kufanya WAPI.

621
00:30:26,230 --> 00:30:30,530
Na kisha tuna baadhi ya kufuzu hapa.

622
00:30:30,530 --> 00:30:32,300
Na kisha nini tuna ijayo?

623
00:30:32,300 --> 00:30:38,020
Tuna baadhi SET-- kitu
sawa na kitu.

624
00:30:38,020 --> 00:30:38,870
Blah blah sawa.

625
00:30:38,870 --> 00:30:41,859

626
00:30:41,859 --> 00:30:42,400
Updated blah.

627
00:30:42,400 --> 00:30:45,655

628
00:30:45,655 --> 00:30:47,050
Haki?

629
00:30:47,050 --> 00:30:52,280
Hivyo hiyo ni kama ujumla
wazo kwa ajili ya baadhi ya update.

630
00:30:52,280 --> 00:30:53,060
OK?

631
00:30:53,060 --> 00:30:56,890
>> Basi hebu kuanza kujaza hii
katika na nini ni lazima.

632
00:30:56,890 --> 00:30:59,640
Hivyo kile meza ni sisi kuzungumza juu?

633
00:30:59,640 --> 00:31:02,190
Akaunti.

634
00:31:02,190 --> 00:31:05,360
Na kisha katika kesi hii,
nini kweli cool

635
00:31:05,360 --> 00:31:08,620
ni ni sisi kuzungumza juu maalum
watumiaji katika akaunti yetu,

636
00:31:08,620 --> 00:31:11,240
au ni sisi kuzungumza juu watumiaji wote?

637
00:31:11,240 --> 00:31:12,490
Tunazungumzia watumiaji wote.

638
00:31:12,490 --> 00:31:16,870
Hivyo katika kesi hiyo, tunaweza tu
kufuta hii WAPI kufuzu.

639
00:31:16,870 --> 00:31:20,500
WAPI ni tu wakati unataka
kikomo nini wewe kubadilika.

640
00:31:20,500 --> 00:31:23,500
Kama unataka mabadiliko ya nzima
meza, unaweza tu kuacha hiyo.

641
00:31:23,500 --> 00:31:27,390

642
00:31:27,390 --> 00:31:27,960
OK.

643
00:31:27,960 --> 00:31:29,430
>> Hivyo sasa tuko katika SET wetu sehemu.

644
00:31:29,430 --> 00:31:31,514
Je, tunataka mabadiliko?

645
00:31:31,514 --> 00:31:33,502
>> Watazamaji: Mizani.

646
00:31:33,502 --> 00:31:34,747
>> SPIKA 1: Mizani.

647
00:31:34,747 --> 00:31:37,080
Na tunakwenda to-- jinsi ni
sisi kwenda na mabadiliko mizani?

648
00:31:37,080 --> 00:31:40,230

649
00:31:40,230 --> 00:31:43,370
Tuna $ 20 ada, haki?

650
00:31:43,370 --> 00:31:45,210
Minus 20.

651
00:31:45,210 --> 00:31:48,130
Wakasema ni sawa kama
tuna mizani hasi.

652
00:31:48,130 --> 00:31:51,630
Hivyo katika kesi hii, huna haja ya
kufanya lolote zaidi ya kuangalia makosa.

653
00:31:51,630 --> 00:31:53,040
OK?

654
00:31:53,040 --> 00:31:56,130
Hiyo ni literally wote una kufanya.

655
00:31:56,130 --> 00:31:57,990
Cool?

656
00:31:57,990 --> 00:31:59,260
OK.

657
00:31:59,260 --> 00:32:01,460
>> Basi hebu kwenda kwa njia ya moja ijayo.

658
00:32:01,460 --> 00:32:04,510
"Kwa nini SQL query inaweza
benki retrieve idadi ya akaunti ya

659
00:32:04,510 --> 00:32:08,300
ya tajiri wateja wake na
mizani zaidi kuliko $ 1,000? "

660
00:32:08,300 --> 00:32:11,820
Kama benki yako na tajiri wateja wako
ni wale tu na zaidi ya $ 1,000,

661
00:32:11,820 --> 00:32:14,130
Mimi kujisikia kama uko
kufanya kitu kibaya.

662
00:32:14,130 --> 00:32:16,080
Kama, jinsi gani benki kuishi juu ya hilo?

663
00:32:16,080 --> 00:32:18,930
Kama, maslahi ya kwamba, si kutosha kabisa.

664
00:32:18,930 --> 00:32:20,911
OK.

665
00:32:20,911 --> 00:32:23,660
Kwa aina hii ya kitu, je,
unafikiri, ya kazi yetu nne,

666
00:32:23,660 --> 00:32:25,970
unafikiri tunakwenda kutumia?

667
00:32:25,970 --> 00:32:27,048
SELECT.

668
00:32:27,048 --> 00:32:27,548
Perfect.

669
00:32:27,548 --> 00:32:31,300

670
00:32:31,300 --> 00:32:32,460
SELECT.

671
00:32:32,460 --> 00:32:33,300
OK.

672
00:32:33,300 --> 00:32:40,150
Hivyo sisi ni kuchagua baadhi ya
kitambulisho kutoka meza.

673
00:32:40,150 --> 00:32:44,070
Na kisha WAPI hali hiyo.

674
00:32:44,070 --> 00:32:46,110
Hivyo kama sisi kwenda kwa njia ya
haya, mimi nina kwenda tu

675
00:32:46,110 --> 00:32:49,680
kukupa guys rejea ujumla
juu ya muundo wa jumla wa yote haya.

676
00:32:49,680 --> 00:32:54,600
>> Hivyo sisi ni kuchagua aina fulani
ya [? kitu. ?] Katika kesi hiyo,

677
00:32:54,600 --> 00:32:59,050
hii ni kwenda kuwa
kawaida baadhi safu.

678
00:32:59,050 --> 00:33:02,870
Hivyo katika kesi yetu, tuna posta, mizani.

679
00:33:02,870 --> 00:33:06,020
Katika kesi guys wako, labda
ilikuwa ID, jina, password.

680
00:33:06,020 --> 00:33:10,760
Yoyote ya nguzo hizo, hiyo ni
kawaida nini tuko kuchagua.

681
00:33:10,760 --> 00:33:14,785
>> Hivyo katika kesi hii hapa, ambayo
aina ya safu, nini kitambulisho

682
00:33:14,785 --> 00:33:17,700
sisi kuunganisha kutoka meza yetu?

683
00:33:17,700 --> 00:33:21,020
Nini kuuliza sisi kwa?

684
00:33:21,020 --> 00:33:24,510
Ni anauliza nasi kwa namba yetu, haki?

685
00:33:24,510 --> 00:33:26,236
idadi ya akaunti.

686
00:33:26,236 --> 00:33:30,500
Basi kumbuka, tu idadi katika kesi hii.

687
00:33:30,500 --> 00:33:33,910
Kama wewe guys milele alikuwa makosa, kwamba
sanduku rangi ya machungwa atakuja up.

688
00:33:33,910 --> 00:33:37,040
Na ilikuwa ni kama, zisizotarajiwa
mstari katika, kama, chochote.

689
00:33:37,040 --> 00:33:39,840
Hiyo ni kwa sababu wewe kuitwa
meza yako vibaya, haki?

690
00:33:39,840 --> 00:33:43,660
Hivyo kuwa na uhakika kwamba wewe ni
wito safu usahihi.

691
00:33:43,660 --> 00:33:48,670
>> Hivyo kutoka meza, meza yetu
ni kuitwa akaunti.

692
00:33:48,670 --> 00:33:51,460
Tena, kuhakikisha wewe ni
referencing meza yako kwa usahihi.

693
00:33:51,460 --> 00:33:52,990
Na kisha nini hali yetu hapa?

694
00:33:52,990 --> 00:33:55,672
Je, ni sisi kuangalia kwa?

695
00:33:55,672 --> 00:33:56,680
Tunataka watu matajiri wetu.

696
00:33:56,680 --> 00:33:57,180
Ndiyo.

697
00:33:57,180 --> 00:34:00,580
Hivyo usawa zaidi ya 1,000.

698
00:34:00,580 --> 00:34:02,020
Kuna kwenda.

699
00:34:02,020 --> 00:34:03,760
Hiyo ni hoja yako.

700
00:34:03,760 --> 00:34:06,430
Si mbaya sana, haki?

701
00:34:06,430 --> 00:34:07,160
OK.

702
00:34:07,160 --> 00:34:09,350
>> Hivyo sasa kwa moja yetu ya mwisho.

703
00:34:09,350 --> 00:34:11,370
Pamoja na kwamba, sisi ni breezing kupitia.

704
00:34:11,370 --> 00:34:12,170
OK.

705
00:34:12,170 --> 00:34:16,280
Hivyo sasa "na kile swala inaweza
benki karibu, dvs., kufuta "-

706
00:34:16,280 --> 00:34:19,760
hawana upendo jinsi
tu alitoa wewe DELETE--

707
00:34:19,760 --> 00:34:24,060
"Kila akaunti ambayo ina uwiano wa 0?"

708
00:34:24,060 --> 00:34:26,899
Nadhani tunaweza wote wanakubaliana tuko
pengine kwenda kuwa na kutumia kufuta.

709
00:34:26,899 --> 00:34:29,330
Mimi nina kuwakaribisha kwa kuchukua yoyote
majadiliano ya suala hilo.

710
00:34:29,330 --> 00:34:33,560
Lakini nadhani ni pretty salama
kusema kwamba tunaweza kutumia kufuta.

711
00:34:33,560 --> 00:34:42,600
>> Hivyo sisi ni kwenda kwa kufuta baadhi
watumiaji kutoka meza, WAPI hali hiyo.

712
00:34:42,600 --> 00:34:45,480
Aina hiyo hiyo ya jambo kama SELECT.

713
00:34:45,480 --> 00:34:48,389

714
00:34:48,389 --> 00:34:49,840
Hivyo katika hili case-- oh, sorry.

715
00:34:49,840 --> 00:34:51,570
Mimi lazima kufuta kutoka.

716
00:34:51,570 --> 00:34:54,320
Kwa sababu ya kufuta
kufuta mstari mzima.

717
00:34:54,320 --> 00:34:58,300
Hivyo hatuna haja ya kuzungumza kuhusu ambayo
mambo maalum kuhusu user tuko

718
00:34:58,300 --> 00:34:59,280
kufuta.

719
00:34:59,280 --> 00:35:02,870
Kama sisi kufuta mtumiaji, tuko
kufuta kila kitu juu yao.

720
00:35:02,870 --> 00:35:07,230
>> Hivyo katika kesi hii, sisi tu haja ya
kujaza WAPI yetu na hali yetu.

721
00:35:07,230 --> 00:35:13,050
Hivyo meza yetu ni akaunti yetu tu
meza, kama tumekuwa kufanya.

722
00:35:13,050 --> 00:35:14,931
Na kisha ni nini hapa hali yetu?

723
00:35:14,931 --> 00:35:16,655
>> Watazamaji: Mizani.

724
00:35:16,655 --> 00:35:18,330
>> SPIKA 1: Mizani sawa 0.

725
00:35:18,330 --> 00:35:19,401
Sahihi.

726
00:35:19,401 --> 00:35:19,900
Wema wote.

727
00:35:19,900 --> 00:35:20,322
Ndiyo.

728
00:35:20,322 --> 00:35:21,238
>> Watazamaji: [inaudible].

729
00:35:21,238 --> 00:35:25,745

730
00:35:25,745 --> 00:35:30,530
>> SPIKA 1: Kwa hiyo kufuta
asili deletes kila kitu.

731
00:35:30,530 --> 00:35:42,380
Hivyo ambapo pamoja na SELECT, SELECT inachukua katika
baadhi ya nguzo kwamba unataka kurudi.

732
00:35:42,380 --> 00:35:46,680
Kama alitaka kila kitu kuhusu
user akarudi, unatumia nyota.

733
00:35:46,680 --> 00:35:49,040
Star anasema, kurudi kwangu
kila kitu kutoka kwa mtumiaji huyu.

734
00:35:49,040 --> 00:35:54,430
Au kama wewe kuweka WAPI nyota, kwamba
maana nipe kila kitu tu.

735
00:35:54,430 --> 00:35:56,520
>> Lakini kufuta asili ina hiyo.

736
00:35:56,520 --> 00:36:01,569
Hivyo kama wewe kusema, kufuta kutoka
akaunti ambapo uwiano sawa 0,

737
00:36:01,569 --> 00:36:02,610
ni kwenda kupitia.

738
00:36:02,610 --> 00:36:05,890
Na kila mahali kwamba usawa ni
sawa na 0, ni asili anafanya hivyo.

739
00:36:05,890 --> 00:36:07,470
Ni itabidi kufuta kila kitu.

740
00:36:07,470 --> 00:36:15,120
nyota ni zaidi for--
na SELECT au UPDATE,

741
00:36:15,120 --> 00:36:20,320
ni kuzungumza zaidi juu ya mtu binafsi
mashamba sambamba kwa mtumiaji.

742
00:36:20,320 --> 00:36:25,530
>> Hivyo wakati huna CHAGUA
nyota kutoka meza WAPI ID

743
00:36:25,530 --> 00:36:31,130
sawa 1, kwamba anarudi na wewe
kila kitu kuhusu user na ID 1.

744
00:36:31,130 --> 00:36:38,980
Kama ungekuwa na kufanya idadi SELECT
au CHAGUA ID jina comma kutoka kwa watumiaji

745
00:36:38,980 --> 00:36:43,110
WAPI ID sawa 1, kwamba
tu anarudi idadi yao

746
00:36:43,110 --> 00:36:44,880
au ID zao na majina yao.

747
00:36:44,880 --> 00:36:45,540
OK?

748
00:36:45,540 --> 00:36:49,420
>> Hivyo sisi kutumia nyota katika kesi hiyo kwa
kutupa kila kitu kuhusu user.

749
00:36:49,420 --> 00:36:51,940
Na kufuta asili anafanya hivyo.

750
00:36:51,940 --> 00:36:56,950
Haina tu kufuta ID,
au tu jina, au chochote.

751
00:36:56,950 --> 00:36:57,550
Yeah, hakuna.

752
00:36:57,550 --> 00:36:59,780
Ni tu deletes user nzima.

753
00:36:59,780 --> 00:37:05,210
Hivyo hatuna kuwa na wasiwasi
kuhusu nyota huko.

754
00:37:05,210 --> 00:37:09,170
>> Kama alitaka kufuta
kila kitu, unaweza kufanya hivyo,

755
00:37:09,170 --> 00:37:11,970
na hii itabidi kuacha kila kitu.

756
00:37:11,970 --> 00:37:14,290
Lakini kwa kawaida, wewe
hawataki kufanya hivyo.

757
00:37:14,290 --> 00:37:16,940
Lakini kama wewe milele unataka kufuta
kila kitu, unaweza kufanya hivyo.

758
00:37:16,940 --> 00:37:18,890
OK.

759
00:37:18,890 --> 00:37:22,120
>> Je, guys kupatikana maswali yoyote?

760
00:37:22,120 --> 00:37:22,620
Ndiyo.

761
00:37:22,620 --> 00:37:24,316
>> Watazamaji: Je, unaweza kufanya 26?

762
00:37:24,316 --> 00:37:27,090
>> SPIKA 1: 26 sisi tu alivyofanya.

763
00:37:27,090 --> 00:37:28,090
Watazamaji: Oh, 25, sorry.

764
00:37:28,090 --> 00:37:30,721
SPIKA 1: 25.

765
00:37:30,721 --> 00:37:31,220
OK.

766
00:37:31,220 --> 00:37:31,870
25.

767
00:37:31,870 --> 00:37:32,650
Oh.

768
00:37:32,650 --> 00:37:33,691
Wao ni kufanya JavaScript.

769
00:37:33,691 --> 00:37:37,265
Oh, siwezi kuamini.

770
00:37:37,265 --> 00:37:38,765
Mimi nina kwenda kwa fujo sisi juu tena, guys.

771
00:37:38,765 --> 00:37:42,180

772
00:37:42,180 --> 00:37:43,330
OK.

773
00:37:43,330 --> 00:37:44,440
Sisi got hii.

774
00:37:44,440 --> 00:37:46,172
Sisi ni kwenda kufanya kazi hii.

775
00:37:46,172 --> 00:37:48,190
Ah, jQuery.

776
00:37:48,190 --> 00:37:49,380
Furaha.

777
00:37:49,380 --> 00:37:49,880
OK.

778
00:37:49,880 --> 00:37:54,040
>> Hivyo sisi ni kwenda kukamilisha
utekelezaji wa ukurasa wa mtandao

779
00:37:54,040 --> 00:37:57,820
katika namna kwamba kama wao kutembelea,
pembejeo jina yao, na kuwasilisha fomu,

780
00:37:57,820 --> 00:38:03,810
wana tahadhari hii kubwa
dirisha kwamba ni kwenda kuonekana.

781
00:38:03,810 --> 00:38:08,410
Hivyo kitu chochote na alerts, tunajua kwamba
tunakwenda kuwa na matumizi ya JavaScript.

782
00:38:08,410 --> 00:38:11,190
Yay, JavaScript.

783
00:38:11,190 --> 00:38:14,070
Na kama wao kushindwa pembejeo a
jina kabla ya kuwasilisha fomu,

784
00:38:14,070 --> 00:38:15,110
hakuna tahadhari inapaswa kuonekana.

785
00:38:15,110 --> 00:38:17,900
Hivyo unaweza kutumia jQuery,
lakini huna kwa.

786
00:38:17,900 --> 00:38:22,390
>> Hivyo mimi nina kwenda basi wewe guys kazi
juu ya hili kwa dakika kadhaa.

787
00:38:22,390 --> 00:38:24,050
Fikiria kuhusu hilo.

788
00:38:24,050 --> 00:38:26,050
Na kisha sisi kanuni ya yake.

789
00:38:26,050 --> 00:38:29,260

790
00:38:29,260 --> 00:38:33,610
Kufyeka Mimi kwenda kujaribu na kufikiria
njia bora ya kuelezea jibu hili na wewe.

791
00:38:33,610 --> 00:38:49,945

792
00:38:49,945 --> 00:38:50,470
Wote haki.

793
00:38:50,470 --> 00:38:53,150
Tutaweza kupata ni kuanzisha.

794
00:38:53,150 --> 00:38:53,920
OK.

795
00:38:53,920 --> 00:38:56,370
>> Hivyo sisi ni kwenda tu
kutembea kwa njia hii,

796
00:38:56,370 --> 00:38:59,010
sababu najua jQuery
ni utata kidogo.

797
00:38:59,010 --> 00:39:01,710
JavaScript.

798
00:39:01,710 --> 00:39:03,542
Ni kidogo huko nje.

799
00:39:03,542 --> 00:39:05,875
Hivyo nini tunakwenda kufanya ni
[Inaudible] kweli kutatuliwa

800
00:39:05,875 --> 00:39:07,250
tatizo hili na jQuery.

801
00:39:07,250 --> 00:39:09,490
Hivyo kama wewe kumbuka,
jQuery ni maktaba

802
00:39:09,490 --> 00:39:11,520
kwamba tu kujengwa juu ya JavaScript.

803
00:39:11,520 --> 00:39:14,750
Ni maana ya kufanya yako
maisha rahisi kidogo.

804
00:39:14,750 --> 00:39:17,660
>> Napenda dhahiri, kama
una muda, kuangalia juu ya

805
00:39:17,660 --> 00:39:20,510
kidogo ya
nyaraka kwa jQuery.

806
00:39:20,510 --> 00:39:23,230
Lakini ni sawa na JavaScript.

807
00:39:23,230 --> 00:39:27,830
Ni got mitizamo kama hiyo, ambapo
kutumia hii dot operator kuwaita kazi

808
00:39:27,830 --> 00:39:31,720
juu ya vitu kwamba una.

809
00:39:31,720 --> 00:39:36,970
>> Hivyo nini sisi hapa ni kwa ajili ya jQuery,
unapaswa daima kuwa aina hii

810
00:39:36,970 --> 00:39:43,010
ya wrapper, ambayo ni
$ (Hati) .ready (kazi) kazi

811
00:39:43,010 --> 00:39:45,510
katika mabano hapa.

812
00:39:45,510 --> 00:39:46,070
OK.

813
00:39:46,070 --> 00:39:48,700
Hivyo hii inaweza kuwa kitu
unataka kwenye kudanganya karatasi yako.

814
00:39:48,700 --> 00:39:52,070
Kwa sababu kwa uchache sana, unaweza
kuwa wrapper kwa jQuery yako.

815
00:39:52,070 --> 00:39:57,190
Na kutakuwa na angalau kupata
wewe sehemu njia huko.

816
00:39:57,190 --> 00:40:00,110
>> Hivyo katika njia sawa kwamba sisi
aliongea mengi kuhusu JavaScript,

817
00:40:00,110 --> 00:40:04,560
na tunataka kuanza kwa kuangalia
katika kile sisi ni kujaribu kuhariri

818
00:40:04,560 --> 00:40:06,150
au kile sisi ni kujaribu mabadiliko.

819
00:40:06,150 --> 00:40:09,050
Na kwamba ingekuwa kawaida kuwa
Jambo la kwanza kwamba tunatarajia kuweka katika.

820
00:40:09,050 --> 00:40:18,270
Hivyo katika kesi hii, kama sisi kwenda nyuma ya hii
hapa na sisi kuangalia fomu yetu hapa,

821
00:40:18,270 --> 00:40:21,790
tuna pembejeo hii,
haki, id hii ya pembejeo.

822
00:40:21,790 --> 00:40:24,780
Na tunajua kwamba msingi
juu ya suala yetu, sisi

823
00:40:24,780 --> 00:40:27,970
ama kwenda kutupa
kosa kama hii ni tupu,

824
00:40:27,970 --> 00:40:31,720
au tunakwenda kuweka
huu katika tahadhari, haki?

825
00:40:31,720 --> 00:40:36,670
Basi pengine salama kusema kwamba tuko
kwenda kushughulika na pembejeo hapa.

826
00:40:36,670 --> 00:40:41,770
>> jQuery ni sawa sana kwa kuwa kama sisi
kufikiri nyuma CSS, na chochote ID

827
00:40:41,770 --> 00:40:44,760
sisi kuangalia kwa hash.

828
00:40:44,760 --> 00:40:48,310
Chochote na darasa sisi
inaonekana katika na dot, haki?

829
00:40:48,310 --> 00:40:53,210
Hivyo katika njia sawa hapa, nini
tunazungumzia ni pembejeo.

830
00:40:53,210 --> 00:40:56,920
Tuliona kwamba pembejeo ni
ID ndani ya fomu yetu.

831
00:40:56,920 --> 00:41:00,850
Hivyo sisi ni kwenda kwa kutaja kama vile.

832
00:41:00,850 --> 00:41:01,653
Pembejeo.

833
00:41:01,653 --> 00:41:02,460
OK?

834
00:41:02,460 --> 00:41:04,480
>> Hivyo wakati katika shaka, hata
kama una mahali pa,

835
00:41:04,480 --> 00:41:09,100
kama wewe ni kweli uhakika kuhusu jinsi ya
mbinu hii, A, na wrapper hii.

836
00:41:09,100 --> 00:41:11,780
Hivyo kuanza pale na
wrapper kwa jQuery.

837
00:41:11,780 --> 00:41:16,330
B, kuhakikisha kwamba unajua
nini yanabadilika.

838
00:41:16,330 --> 00:41:18,830
Na wakati katika shaka,
kuweka kwamba katika kitu,

839
00:41:18,830 --> 00:41:21,390
na kufanya dot, chochote unafikiri
unapaswa kufanya na hayo.

840
00:41:21,390 --> 00:41:22,150
>> Watazamaji: ni wrapper nini?

841
00:41:22,150 --> 00:41:24,160
>> SPIKA 1: wrapper
ni mstari huu wa kwanza.

842
00:41:24,160 --> 00:41:27,520
Hivyo hii anasema, kusubiri hadi
hati yangu ni tayari.

843
00:41:27,520 --> 00:41:29,160
Kisha kuanza messing na mambo.

844
00:41:29,160 --> 00:41:30,890
OK?

845
00:41:30,890 --> 00:41:32,780
Hivyo tunajua tuko messing na pembejeo.

846
00:41:32,780 --> 00:41:35,450
Hivyo sisi ni kama, OK, pembejeo ni aina yetu.

847
00:41:35,450 --> 00:41:37,220
Hiyo ni ID wetu.

848
00:41:37,220 --> 00:41:39,800
Hivyo kwamba ni nini tuko
kwenda kutafuta.

849
00:41:39,800 --> 00:41:45,220
Na tunataka kuona nini kinatokea
wakati fomu hii ni kuwasilishwa, haki?

850
00:41:45,220 --> 00:41:50,180
>> Hivyo kama sisi kufikiri,
tuna baadhi ya .submit.

851
00:41:50,180 --> 00:41:56,080
Hivyo .submit tu anasema, OK, aina hii
kwamba tumekuwa inatazamwa na hash pembejeo,

852
00:41:56,080 --> 00:41:59,594
wakati ni kuwasilishwa,
nitafanya kitu kingine.

853
00:41:59,594 --> 00:42:01,135
Hivyo sisi ni kwenda kuwa na baadhi ya kazi.

854
00:42:01,135 --> 00:42:05,010

855
00:42:05,010 --> 00:42:07,270
Taarifa tuna kazi bila majina hapa.

856
00:42:07,270 --> 00:42:09,090
Tuna kazi bila majina hapa.

857
00:42:09,090 --> 00:42:09,590
Ndiyo.

858
00:42:09,590 --> 00:42:14,880
>> Watazamaji: Je, ni daima kuwa .submit,
au ni kwa sababu tu katika HTML,

859
00:42:14,880 --> 00:42:18,260
sisi alifanya aina kifungo Kuwasilisha?

860
00:42:18,260 --> 00:42:23,680
>> SPIKA 1: Ni lazima .submit, kwa sababu
ni aina fulani kwamba sisi ni kuwasilisha.

861
00:42:23,680 --> 00:42:27,750
Kwa sababu .submit hii haina si lazima
yanahusiana na nini kifungo ni kama

862
00:42:27,750 --> 00:42:28,430
kwa simu.

863
00:42:28,430 --> 00:42:32,610
Lakini ukweli kwamba ni
kuunda kwamba sisi ni kuwasilisha.

864
00:42:32,610 --> 00:42:33,140
OK.

865
00:42:33,140 --> 00:42:35,015
>> Hivyo taarifa bila majina
kazi hapa kwamba says--

866
00:42:35,015 --> 00:42:37,348
Watazamaji: Mimi si kweli
kuelewa kazi bila majina.

867
00:42:37,348 --> 00:42:39,240
SPIKA 1: Kwa hiyo bila majina
kazi, wao uko

868
00:42:39,240 --> 00:42:42,380
kazi tu kwamba hawana jina.

869
00:42:42,380 --> 00:42:49,560
Hivyo badala ya kuwa baadhi ya kazi kuu
kwamba calls-- tunaweza kusema, Kama hati

870
00:42:49,560 --> 00:42:52,380
tayari, basi tunataka kuwaita pembejeo.

871
00:42:52,380 --> 00:42:57,470
Na kisha, Wakati kuwasilishwa, call--
kama, Kama ni hivyo-na-hivyo kuwasilishwa,

872
00:42:57,470 --> 00:42:59,550
tunatarajia kuwaita baadhi ya kazi nyingine.

873
00:42:59,550 --> 00:43:01,840
kazi bila majina
tu hana jina,

874
00:43:01,840 --> 00:43:05,120
na itakuwa tu nitafanya
ndani ya aina ya mambo haya.

875
00:43:05,120 --> 00:43:10,970
>> Hivyo katika kesi hii, ni nini hii anasema
ni, Wakati hati yetu ni tayari,

876
00:43:10,970 --> 00:43:12,880
nitafanya kazi hii.

877
00:43:12,880 --> 00:43:17,110
Kazi hii ni linajumuisha
ya kila kitu ndani ya hapa.

878
00:43:17,110 --> 00:43:24,410
Na basi ijayo safu katika ni, OK,
wakati pembejeo ni kuwasilishwa, nitafanya hii.

879
00:43:24,410 --> 00:43:28,329
Ni njia tu ya denoting
nini lazima ifanyike wakati.

880
00:43:28,329 --> 00:43:30,120
Ni literally tu
kazi ambayo haina

881
00:43:30,120 --> 00:43:32,860
kuwa na jina, hivyo wao huwa na
kuwa nested ndani ya kila mmoja,

882
00:43:32,860 --> 00:43:35,132
sababu huwezi kuwaita kwa jina.

883
00:43:35,132 --> 00:43:36,984
OK?

884
00:43:36,984 --> 00:43:39,775
Literally, kazi bila majina
ni tu kazi bila jina.

885
00:43:39,775 --> 00:43:41,470
Hiyo ni.

886
00:43:41,470 --> 00:43:47,370
Tu njia ya kurejelea
mambo mbalimbali

887
00:43:47,370 --> 00:43:49,250
kwamba tunataka kunyongwa kwa wakati maalumu.

888
00:43:49,250 --> 00:43:51,164
>> Watazamaji: [inaudible].

889
00:43:51,164 --> 00:43:53,420
>> SPIKA 1: vent?

890
00:43:53,420 --> 00:43:54,360
Wapi?

891
00:43:54,360 --> 00:43:57,510
>> Watazamaji: Katika
mabano baada ya kazi?

892
00:43:57,510 --> 00:44:00,660
>> SPIKA 1: Baada ya kazi.

893
00:44:00,660 --> 00:44:01,290
Ambayo moja?

894
00:44:01,290 --> 00:44:02,410
>> Watazamaji: Wote.

895
00:44:02,410 --> 00:44:05,137
Kama kuweka, kama, tukio, au kama
kuweka hoja huko,

896
00:44:05,137 --> 00:44:07,372
itakuwa ni makosa?

897
00:44:07,372 --> 00:44:12,592
>> SPIKA 1: Katika kesi hii, nadhani
unaweza kuweka hoja katika huko.

898
00:44:12,592 --> 00:44:15,619
Lakini kwa sababu hatuna haja
hoja, kuna haipaswi.

899
00:44:15,619 --> 00:44:17,410
Kama, ni mzima,
kama, unapaswa tu

900
00:44:17,410 --> 00:44:19,810
kuwa mambo ambayo ni
muhimu aina ya kitu.

901
00:44:19,810 --> 00:44:29,325
Katika njia sawa kwamba kama tulikuwa yoyote
kazi ambayo ina int kuu void-- kama,

902
00:44:29,325 --> 00:44:35,687
na int kuu utupu, wewe
inaweza kufanya int ARG v, chochote.

903
00:44:35,687 --> 00:44:38,270
Lakini kama huna haja hayo,
haipaswi kuwa nao huko.

904
00:44:38,270 --> 00:44:39,070
Same kitu.

905
00:44:39,070 --> 00:44:40,896
Emma, ​​je una swali?

906
00:44:40,896 --> 00:44:41,671
OK.

907
00:44:41,671 --> 00:44:42,170
Baridi.

908
00:44:42,170 --> 00:44:42,670
OK.

909
00:44:42,670 --> 00:44:45,862
Hivyo kile sisi hadi sasa ni wakati wetu
hati ya tayari, nitafanya hii.

910
00:44:45,862 --> 00:44:47,570
Sasa sisi ni kuangalia
wakati ni kuwasilishwa.

911
00:44:47,570 --> 00:44:51,530
Hivyo sasa sisi kweli kuwa aina
ya nyama ya kitu yetu.

912
00:44:51,530 --> 00:45:00,120
Hivyo tunahitaji kupata thamani kwamba
user kuwasilishwa, ni kama kwamba jina

913
00:45:00,120 --> 00:45:01,340
au tupu.

914
00:45:01,340 --> 00:45:07,270
Na kisha tunahitaji ama kurudi
tahadhari hii au kutupa makosa.

915
00:45:07,270 --> 00:45:08,560
Aidha njia.

916
00:45:08,560 --> 00:45:13,690
>> Hivyo ni jinsi gani sisi kutangaza
variable katika JavaScript?

917
00:45:13,690 --> 00:45:14,670
Var.

918
00:45:14,670 --> 00:45:19,430
Hivyo hebu sema, jina var
equals-- au kweli, tutaweza

919
00:45:19,430 --> 00:45:21,960
kufanya thamani tangu Nadhani ni jina.

920
00:45:21,960 --> 00:45:23,920
OK.

921
00:45:23,920 --> 00:45:31,320
Hivyo tuna baadhi ya thamani hapa kwamba sisi
wanataka kuvuta kutoka pembejeo fomu yetu.

922
00:45:31,320 --> 00:45:34,100
Hivyo katika njia sawa kwamba
sisi aina ya alifanya pembejeo,

923
00:45:34,100 --> 00:45:38,380
yeyote anaweza kuniambia nini sisi
inaweza kuwa wito ndani ya hapa

924
00:45:38,380 --> 00:45:41,230
kama sisi alitaka kupata
jina kutoka fomu?

925
00:45:41,230 --> 00:45:46,929
Na kama sisi kuangalia nyuma katika fomu yetu hapa,
sisi taarifa kwamba tuna ID ya jina.

926
00:45:46,929 --> 00:45:47,845
Watazamaji: [inaudible].

927
00:45:47,845 --> 00:45:51,026

928
00:45:51,026 --> 00:45:54,675
>> SPIKA 1: Huna
kufikiria ni kama safu.

929
00:45:54,675 --> 00:45:57,650

930
00:45:57,650 --> 00:46:00,760
Huna haja ya kuwa na wasiwasi juu ya hilo.

931
00:46:00,760 --> 00:46:03,250
Hivyo sisi tu na baadhi ya jina.

932
00:46:03,250 --> 00:46:09,022
Na kisha kwa sababu JavaScript na mambo
ni weird, hatuwezi tu kufanya "jina."

933
00:46:09,022 --> 00:46:11,230
Sisi kwa kweli kuwaita
baadhi ya kazi ambayo inatupa,

934
00:46:11,230 --> 00:46:14,160
kama hiyo, thamani ya kwamba kitambulisho.

935
00:46:14,160 --> 00:46:15,160
OK?

936
00:46:15,160 --> 00:46:16,780
Hivyo kwamba ni tu .val.

937
00:46:16,780 --> 00:46:18,356
>> Watazamaji: [inaudible].

938
00:46:18,356 --> 00:46:19,160
>> SPIKA 1: OK.

939
00:46:19,160 --> 00:46:27,030
Hivyo, pamoja na JavaScript, aina hii ya
jambo la haki hapa tu hupitia.

940
00:46:27,030 --> 00:46:35,730
Na unaweza kufikiria hii as-- ni
kama karibu getElementById, ambapo

941
00:46:35,730 --> 00:46:40,630
getElementById ingekuwa kweli
kurudi kitu full na wewe.

942
00:46:40,630 --> 00:46:49,930
$ ("# Jina") ni kama,
OK, mimi kuwa ni, siwezi kupata hiyo,

943
00:46:49,930 --> 00:46:52,265
lakini kama kweli unataka
kurudi thamani ya you--

944
00:46:52,265 --> 00:46:53,596
>> Watazamaji: Je, ni kama pointer?

945
00:46:53,596 --> 00:46:55,070
>> SPIKA 1: Ni aina ya kama pointer.

946
00:46:55,070 --> 00:46:57,069
Unaweza kufikiria kama
aina ya kama pointer.

947
00:46:57,069 --> 00:46:59,060
Kama, inasema, OK, mimi
kujua jinsi ya kupata huko,

948
00:46:59,060 --> 00:47:02,330
lakini kwa kweli kupata thamani nje ya
hivyo, una wazi kuuliza kwa ajili yake.

949
00:47:02,330 --> 00:47:07,800
Na kwa bahati mbaya, ni wazi, hatufanyi
kufanya sana na JavaScript na jQuery.

950
00:47:07,800 --> 00:47:12,160
>> Hivyo ni kwenda kuja chini na kiasi gani
wewe guys-- nini kutokea kwa kujua,

951
00:47:12,160 --> 00:47:17,610
nini kutokea kwa nimeona, na kile
unaweza aina ya mantiki nadhani katika.

952
00:47:17,610 --> 00:47:21,639
Kwa kuwa baadhi ya mambo haya,
inaweza pengine kupata nusu ya huko.

953
00:47:21,639 --> 00:47:24,180
Lakini kupata kabisa haki,
Nadhani tatizo hili pengine

954
00:47:24,180 --> 00:47:25,624
alikuwa mmoja wa alama ya chini.

955
00:47:25,624 --> 00:47:27,790
Watazamaji: Kama, kwa mfano,
kwa [inaudible] pembejeo,

956
00:47:27,790 --> 00:47:29,450
kwa nini sio una kuweka Val huko?

957
00:47:29,450 --> 00:47:30,450
SPIKA 1: Kwa hili?

958
00:47:30,450 --> 00:47:31,124
Watazamaji: Yeah.

959
00:47:31,124 --> 00:47:31,790
SPIKA 1: Yeah.

960
00:47:31,790 --> 00:47:33,498
Kwa sababu hii ni aina
ya kama, kama sisi alisema,

961
00:47:33,498 --> 00:47:37,180
baadhi pointer, na hii ni mimi referencing
na kwa kweli kupata sisi thamani.

962
00:47:37,180 --> 00:47:38,872
>> Watazamaji: Wakati [inaudible]?

963
00:47:38,872 --> 00:47:42,060
>> SPIKA 1: Kwa pembejeo,
pembejeo ni tu some--

964
00:47:42,060 --> 00:47:44,450
ni kama tuko tu
kuangalia saa yake kwa ujumla,

965
00:47:44,450 --> 00:47:48,859
na .submit hii inaonyesha
tunachohitaji kujua.

966
00:47:48,859 --> 00:47:50,150
jQuery na JavaScript ni weird.

967
00:47:50,150 --> 00:47:50,800
Mimi najua.

968
00:47:50,800 --> 00:47:51,690
Mimi najua, guys.

969
00:47:51,690 --> 00:47:52,460
Mimi najua.

970
00:47:52,460 --> 00:47:55,260
Kuna sababu mimi si
kufanya programu ya mtandao.

971
00:47:55,260 --> 00:47:56,230
Just kidding.

972
00:47:56,230 --> 00:47:57,780
Mimi si alikuwa na yatokanayo kutosha yake.

973
00:47:57,780 --> 00:47:59,070
>> Watazamaji: [inaudible] CSS.

974
00:47:59,070 --> 00:48:00,206
>> [Kicheko]

975
00:48:00,206 --> 00:48:00,590
>> SPIKA 1: OK, hiyo ni CSS.

976
00:48:00,590 --> 00:48:03,730
CSS ni tu, kama, kufanya mambo pretty,
si kama hebu kukabiliana na data.

977
00:48:03,730 --> 00:48:05,710
Kuna tofauti huko.

978
00:48:05,710 --> 00:48:06,350
OK.

979
00:48:06,350 --> 00:48:12,110
Hivyo sasa hopefully, hii part-- pia, kwa
tatizo kama hii, ambapo msitende

980
00:48:12,110 --> 00:48:16,070
kujua syntax, unaweza kuwa kama,
OK, unaweza kuwa na baadhi ya thamani var

981
00:48:16,070 --> 00:48:18,320
na kuwa kama, kudhani mimi
got thamani usahihi.

982
00:48:18,320 --> 00:48:20,600
Na kisha unaweza pengine
kuandika sehemu hii ya pili.

983
00:48:20,600 --> 00:48:24,640
Hii sehemu ya pili pengine
wanaonekana zaidi rahisi,

984
00:48:24,640 --> 00:48:26,610
au ingekuwa kufanya mantiki
hisia na wewe guys.

985
00:48:26,610 --> 00:48:31,520
>> Wakati nini tumekuwa imeandikwa hivyo mbali,
Mimi najua itakuwa kama, umm, yeah,

986
00:48:31,520 --> 00:48:34,340
Sijui kwamba katika jaribio.

987
00:48:34,340 --> 00:48:37,610
Unaweza kuandika kabisa psuedocode
na kisha kuvunja katika kanuni halisi

988
00:48:37,610 --> 00:48:40,460
wakati you-- ni aina ya kama math.

989
00:48:40,460 --> 00:48:42,904
Kama ve milele alikuwa na baadhi ya
sehemu mbalimbali tatizo ambapo

990
00:48:42,904 --> 00:48:44,820
huna kujua jinsi ya
kupata nyuma hatua ya kwanza,

991
00:48:44,820 --> 00:48:46,736
lakini kila kitu kingine
hutegemea hatua hiyo ya kwanza,

992
00:48:46,736 --> 00:48:49,577
wewe tu kusema, kama, x kudhani sawa 4.

993
00:48:49,577 --> 00:48:50,910
Na kisha kukimbia nayo, haki?

994
00:48:50,910 --> 00:48:52,410
>> Unaweza kufanya kitu kimoja na kanuni.

995
00:48:52,410 --> 00:48:55,740
Hivyo unaweza kusema, kudhani
I got thamani ya haki.

996
00:48:55,740 --> 00:48:58,290
Kisha kufanya sehemu hii ya pili hapa.

997
00:48:58,290 --> 00:49:02,610
Kwa sababu sehemu hii kwa kweli
lazima pretty mantiki.

998
00:49:02,610 --> 00:49:06,560
>> Hivyo sisi haja ya kuangalia
kama thamani yetu ni tupu.

999
00:49:06,560 --> 00:49:11,650
Au kama ni baadhi ya jina,
kweli kutoa tahadhari.

1000
00:49:11,650 --> 00:49:15,085
Hivyo kile anaweza tunataka kuangalia?

1001
00:49:15,085 --> 00:49:17,800
Tunataka kuwa na baadhi Kama.

1002
00:49:17,800 --> 00:49:19,510
Unafikiri Kama yetu ni kwenda kuwa?

1003
00:49:19,510 --> 00:49:24,141
Tunahitaji kuangalia kuona kama thamani
is-- kama si kamba tupu.

1004
00:49:24,141 --> 00:49:30,740

1005
00:49:30,740 --> 00:49:31,730
>> Perfect.

1006
00:49:31,730 --> 00:49:32,570
Hasa.

1007
00:49:32,570 --> 00:49:33,070
OK.

1008
00:49:33,070 --> 00:49:36,320
Hivyo kama hiyo kesi,
nini tunataka kufanya?

1009
00:49:36,320 --> 00:49:39,190
Tunataka kutupa tahadhari baadhi, haki?

1010
00:49:39,190 --> 00:49:41,090
Hivyo ni tahadhari tu.

1011
00:49:41,090 --> 00:49:43,050
Na kisha chochote tunataka ndani.

1012
00:49:43,050 --> 00:49:45,430
Kwa hiyo kile ni tulidhani
kuwa na ndani ya tahadhari yetu?

1013
00:49:45,430 --> 00:49:48,916
>> Watazamaji: "Hello."

1014
00:49:48,916 --> 00:49:50,421
>> SPIKA 1: Comma.

1015
00:49:50,421 --> 00:49:52,462
Na kisha kufanya nyie
kukumbuka jinsi ya concatenate?

1016
00:49:52,462 --> 00:49:53,400
>> Watazamaji: Plus.

1017
00:49:53,400 --> 00:49:54,520
>> SPIKA 1: Plus.

1018
00:49:54,520 --> 00:49:57,490
Hivyo tunataka kuwa plus.

1019
00:49:57,490 --> 00:50:03,480
Na kisha tunahitaji pamoja na mwingine
kwa Moderators kumweka yetu.

1020
00:50:03,480 --> 00:50:05,620
Baridi.

1021
00:50:05,620 --> 00:50:06,540
OK.

1022
00:50:06,540 --> 00:50:08,255
Vinginevyo, nini kinaweza tunataka kufanya?

1023
00:50:08,255 --> 00:50:10,380
Hatutaki kufanya kitu chochote, haki?

1024
00:50:10,380 --> 00:50:14,190
Hivyo sisi tu kurudi uongo.

1025
00:50:14,190 --> 00:50:17,200
Si nini nataka kufanya.

1026
00:50:17,200 --> 00:50:18,520
OK.

1027
00:50:18,520 --> 00:50:20,660
>> Na kisha hizi,
course-- nini muhimu

1028
00:50:20,660 --> 00:50:23,510
ni kukumbuka kwa karibu
kazi yako bila majina.

1029
00:50:23,510 --> 00:50:27,230
Hivyo kama wewe taarifa, tuna baadhi ya
kazi hapa kwamba kuishia hapa.

1030
00:50:27,230 --> 00:50:31,710
Hivyo tunahitaji kuifunga
kwanza moja na kuongeza semicolon.

1031
00:50:31,710 --> 00:50:35,195
Na kisha hii moja hapa ina
kufanya na kazi hii bila majina,

1032
00:50:35,195 --> 00:50:38,650
hivyo sisi karibu yake huko.

1033
00:50:38,650 --> 00:50:40,190
Hiyo goti-jerk majibu ya kuokoa.

1034
00:50:40,190 --> 00:50:40,690
Ndiyo.

1035
00:50:40,690 --> 00:50:45,650
Watazamaji: Je, kuna sababu that--
tu katika mifano yote katika JavaScript

1036
00:50:45,650 --> 00:50:48,480
kwamba nimeona, tuna
kwanza braces curly

1037
00:50:48,480 --> 00:50:51,075
juu ya mstari huo kama kazi?

1038
00:50:51,075 --> 00:50:53,040
>> SPIKA 1: Hiyo ni Stylistic.

1039
00:50:53,040 --> 00:50:54,130
Yeah.

1040
00:50:54,130 --> 00:51:00,650
Na kwa kweli, kama wewe kuchukua 61, sisi
kufanya njia kwamba wote braces yetu curly.

1041
00:51:00,650 --> 00:51:01,830
Huh?

1042
00:51:01,830 --> 00:51:05,030
>> Watazamaji: Kama sisi alifanya kufanya hivyo juu ya
Pset, ni kwamba mbaya kwa style?

1043
00:51:05,030 --> 00:51:05,720
>> SPIKA 1: No.

1044
00:51:05,720 --> 00:51:09,710
Sisi wazi aliiambia
nyie kufanya hivyo.

1045
00:51:09,710 --> 00:51:14,540
Lakini kwa kweli, hii ni aina
ya mkataba kuhodhi

1046
00:51:14,540 --> 00:51:19,620
katika mengi ya madarasa C na
JavaScript na jQuery.

1047
00:51:19,620 --> 00:51:23,074
Hivyo ni wazi, mimi nina sure--
na kwa kweli, kama mimi

1048
00:51:23,074 --> 00:51:26,770
walikuwa kufanya tatizo hili kabisa
kipofu bila ya kuwa inaonekana saa yake,

1049
00:51:26,770 --> 00:51:30,080
kuna pengine ni wachache sana
njia napenda waliopata hii.

1050
00:51:30,080 --> 00:51:36,160
>> Nipate wamekuwa kama, OK, labda mimi
unahitaji kunyakua kitu ambacho ni pembejeo.

1051
00:51:36,160 --> 00:51:38,020
Na nadhani kuwa
maarifa kwamba, kama,

1052
00:51:38,020 --> 00:51:43,240
OK, kama nataka kupata kitu
kutoka fomu ambayo ina ID,

1053
00:51:43,240 --> 00:51:46,990
Mimi rejea ni kwa njia hii,
Ningependa pengine kupata hiyo.

1054
00:51:46,990 --> 00:51:49,940
Nipate kupata hii.

1055
00:51:49,940 --> 00:51:53,400
Lakini kwa kweli, kitu pekee kwamba nadhani
Napenda kweli kupata ni haki hii hapa.

1056
00:51:53,400 --> 00:51:59,230
>> Hivyo ni aina ya muhimu
kujua, kama na mtihani yoyote ngumu,

1057
00:51:59,230 --> 00:52:02,130
wewe aina ya kuchagua vita yako, sawa?

1058
00:52:02,130 --> 00:52:06,780
Kama unajua kwamba wewe si kwenda kupata
kwamba sehemu ya kwanza kwa jQuery, kama nilivyosema,

1059
00:52:06,780 --> 00:52:10,080
kudhani kwamba una thamani hii
na kufanya nini unaweza na hayo.

1060
00:52:10,080 --> 00:52:14,730
Na kama una muda, kwenda nyuma
na kujaribu na kujaza vipande vipande.

1061
00:52:14,730 --> 00:52:17,150
Lakini si basi swali kama
kweli hii kuumiza vichwa vya chini.

1062
00:52:17,150 --> 00:52:18,080
Kwa sababu gani?

1063
00:52:18,080 --> 00:52:23,260
Hii ilikuwa swali moja katika
jQuery nje ya mtihani nzima.

1064
00:52:23,260 --> 00:52:25,810
Hivyo ndiyo, ni d kuwa kubwa kama wewe got it.

1065
00:52:25,810 --> 00:52:28,297
>> Watazamaji: [inaudible] wewe
Unakaribishwa kutumia jQuery.

1066
00:52:28,297 --> 00:52:30,005
SPIKA 1: Wewe ni
kuwakaribisha kwa kutumia jQuery.

1067
00:52:30,005 --> 00:52:31,088
Watazamaji: OK. [Inaudible].

1068
00:52:31,088 --> 00:52:33,060
SPIKA 1: Jinsi gani unaweza si matumizi yake?

1069
00:52:33,060 --> 00:52:35,850
Napenda kuwa na kuangalia
up wangu wote JavaScript.

1070
00:52:35,850 --> 00:52:38,810
Ni kweli rahisi sana,
Nadhani, kwa kutumia jQuery,

1071
00:52:38,810 --> 00:52:42,995
kwa sababu jQuery kweli hupunguza
kiasi cha JavaScript kuandika pengine

1072
00:52:42,995 --> 00:52:43,620
na, kama, nusu.

1073
00:52:43,620 --> 00:52:46,334
Hivyo kanuni zetu pengine ingekuwa
mara mbili kwa muda mrefu bila hiyo.

1074
00:52:46,334 --> 00:52:49,250
Hivyo kama wewe recognize-- kubwa
Jambo kuchukua mbali tatizo hili

1075
00:52:49,250 --> 00:52:50,550
ni mwelekeo.

1076
00:52:50,550 --> 00:52:52,890
Kama wewe ni kupata
kitu kutoka fomu,

1077
00:52:52,890 --> 00:52:57,830
wewe ni kwenda kutumia quotes, hash,
chochote wewe ni kujaribu kufikia.

1078
00:52:57,830 --> 00:53:01,000
Kama ni kuwa kuwasilishwa, unataka
kutumia kitu kama .submit.

1079
00:53:01,000 --> 00:53:03,680
Pengine wewe kwenda kutumia
kazi bila majina huko.

1080
00:53:03,680 --> 00:53:08,030
Kama kweli unahitaji thamani ya
kitu, wewe ni kwenda kufanya quotes,

1081
00:53:08,030 --> 00:53:12,160
hash, chochote uwanja yaani, .val.

1082
00:53:12,160 --> 00:53:14,690
Na kutambua chati
kama kwamba ni kwenda

1083
00:53:14,690 --> 00:53:19,586
kuwa mbali muhimu zaidi kuliko
kweli kujua nitty gritty.

1084
00:53:19,586 --> 00:53:20,562
Ndiyo.

1085
00:53:20,562 --> 00:53:23,164
>> Watazamaji: Hivyo kama
user elekeza jina yao

1086
00:53:23,164 --> 00:53:27,394
na anaendesha kwa njia ya taarifa kwamba, mapenzi
ni kwenda chini na kurudi uongo baada ya hili?

1087
00:53:27,394 --> 00:53:30,373
>> SPIKA 1: Hapana, kwa sababu tahadhari,
unaweza kufikiria ni kama kurudi.

1088
00:53:30,373 --> 00:53:30,873
Yeah.

1089
00:53:30,873 --> 00:53:31,590
Hivyo kutakuwa na exit.

1090
00:53:31,590 --> 00:53:31,925
Yeah.

1091
00:53:31,925 --> 00:53:33,883
>> Watazamaji: Je wewe
[? mahali?] mabano

1092
00:53:33,883 --> 00:53:37,105
ya kuwasilisha, mabano, kitu?

1093
00:53:37,105 --> 00:53:38,870
>> SPIKA 1: Mimi alifanya, naamini.

1094
00:53:38,870 --> 00:53:42,300
Hii ni moja ya kufungwa haki hapa.

1095
00:53:42,300 --> 00:53:45,800
Na kisha hii moja anapata kufungwa hapa.

1096
00:53:45,800 --> 00:53:47,135
>> Watazamaji: Oh, huko.

1097
00:53:47,135 --> 00:53:48,470
Wote haki.

1098
00:53:48,470 --> 00:53:53,572
>> SPIKA 1: Ni wazi, kidogo,
mambo kidogo kisintaksia

1099
00:53:53,572 --> 00:53:55,780
kama kwamba, sisi itabidi pengine
tu mduara na kuwa kama,

1100
00:53:55,780 --> 00:53:58,385
usisahau mabano yako.

1101
00:53:58,385 --> 00:53:59,810
Lakini yeah.

1102
00:53:59,810 --> 00:54:00,950
OK.

1103
00:54:00,950 --> 00:54:04,190
Je, tuna mtu mwingine
kwamba tunataka kufanya?

1104
00:54:04,190 --> 00:54:07,700

1105
00:54:07,700 --> 00:54:11,599
Je, guys kupata mti binary moja?

1106
00:54:11,599 --> 00:54:12,890
Je, tunataka kwenda juu ya kwamba mmoja?

1107
00:54:12,890 --> 00:54:17,940
Najisikia kama miti binary
na kondomu lazima pointi

1108
00:54:17,940 --> 00:54:19,880
kwamba wewe guys kupata pretty urahisi.

1109
00:54:19,880 --> 00:54:21,978
Nisingependa wewe
kupoteza pointi juu ya hilo.

1110
00:54:21,978 --> 00:54:28,335

1111
00:54:28,335 --> 00:54:30,370
OK.

1112
00:54:30,370 --> 00:54:33,097
>> Hebu kufanya DOM hii hapa.

1113
00:54:33,097 --> 00:54:35,555
Nilikuwa napenda Surface yangu ili niweze
inaweza tu kuteka juu ya screen.

1114
00:54:35,555 --> 00:54:38,330

1115
00:54:38,330 --> 00:54:41,461
Hiyo ni nini mimi kutumika kufanya mwaka jana.

1116
00:54:41,461 --> 00:54:41,960
OK.

1117
00:54:41,960 --> 00:54:48,370
Hivyo kama nilivyoeleza, sisi aliyesema
kuhusu DOM, Document Object Model.

1118
00:54:48,370 --> 00:54:51,415
Wao ni pengine ni kwenda kukupa
baadhi kidogo ya snippet kama hii

1119
00:54:51,415 --> 00:54:54,250
na kuuliza wewe kuunda mti kwa ajili yake.

1120
00:54:54,250 --> 00:54:58,050
Na hii yote tu ana kufanya
na kukimbia kwa njia ya vitambulisho.

1121
00:54:58,050 --> 00:55:00,685
Hivyo hebu jaribu na kufanya hili.

1122
00:55:00,685 --> 00:55:09,610

1123
00:55:09,610 --> 00:55:12,920
>> Pia, kama kwa kawaida, kama wewe guys
kufanya haya Quizzes, kama mimi sana

1124
00:55:12,920 --> 00:55:16,450
kupendekeza kwamba wewe kufanya kama mazoezi,
yeyote kati yao kwamba wewe ni kama,

1125
00:55:16,450 --> 00:55:19,480
Mimi kwa kweli hawapati nini
kinachoendelea hapa, tu, bila shaka,

1126
00:55:19,480 --> 00:55:23,334
tuma barua pepe yangu na swali,
nami kueleza kama bora naweza.

1127
00:55:23,334 --> 00:55:25,298
OK.

1128
00:55:25,298 --> 00:55:33,420
>> Tuna baadhi ya hati, na sisi HTML.

1129
00:55:33,420 --> 00:55:33,970
OK.

1130
00:55:33,970 --> 00:55:38,750
Hivyo basi sisi ni kuchambua tu
vitambulisho hapa, haki?

1131
00:55:38,750 --> 00:55:45,810
Basi je, tunaona comes-- ni nini
subheadings mbili chini HTML?

1132
00:55:45,810 --> 00:55:48,880
Hasa kwa sababu
re indented vizuri?

1133
00:55:48,880 --> 00:55:49,580
Kichwa na mwili.

1134
00:55:49,580 --> 00:56:00,298

1135
00:56:00,298 --> 00:56:00,800
Ah.

1136
00:56:00,800 --> 00:56:03,730

1137
00:56:03,730 --> 00:56:04,960
Kichwa na mwili.

1138
00:56:04,960 --> 00:56:05,952
Lovely.

1139
00:56:05,952 --> 00:56:07,410
Hivyo basi hebu kuanza hapa kwa kichwa.

1140
00:56:07,410 --> 00:56:09,090
Nini chini ya kichwa?

1141
00:56:09,090 --> 00:56:11,721
Nini tag yetu ijayo?

1142
00:56:11,721 --> 00:56:12,220
Title.

1143
00:56:12,220 --> 00:56:16,450

1144
00:56:16,450 --> 00:56:19,605
Na kisha ndani ya kichwa cha habari, quiz.

1145
00:56:19,605 --> 00:56:23,970

1146
00:56:23,970 --> 00:56:24,690
OK.

1147
00:56:24,690 --> 00:56:27,940
>> Hivyo literally, ni tu
kutembea kwa njia ya vitambulisho, OK?

1148
00:56:27,940 --> 00:56:31,610
Hivyo basi kama tuna
mwili, kama sisi kwenda kupitia,

1149
00:56:31,610 --> 00:56:35,460
mwili ina mambo matatu ndani yake, haki?

1150
00:56:35,460 --> 00:56:36,400
Ni got divs tatu.

1151
00:56:36,400 --> 00:56:40,060

1152
00:56:40,060 --> 00:56:41,900
Kila div anapata kidogo yake mwenyewe sanduku.

1153
00:56:41,900 --> 00:56:45,260

1154
00:56:45,260 --> 00:56:48,106
Na nini katika div kwanza?

1155
00:56:48,106 --> 00:56:48,606
[Inaudible]

1156
00:56:48,606 --> 00:56:52,070

1157
00:56:52,070 --> 00:56:57,292
Na kisha moja ya pili ni katikati,
ambayo mimi nina kwenda tu abbreviate.

1158
00:56:57,292 --> 00:56:59,410
Na kisha moja ya mwisho ni ya chini.

1159
00:56:59,410 --> 00:57:06,060

1160
00:57:06,060 --> 00:57:07,650
>> Hivyo kweli, ni tu kutembea kwa njia ya.

1161
00:57:07,650 --> 00:57:11,140
Na kwa sababu tunakwenda kutoa
HTML kwamba ni vizuri indented,

1162
00:57:11,140 --> 00:57:16,800
unaweza literally tu kukimbia kwa njia ya
na kuwa kama, OK, hapa ni HTML.

1163
00:57:16,800 --> 00:57:19,460
Hivyo hii ni yttersta
kona, au akipiga kushoto,

1164
00:57:19,460 --> 00:57:22,410
hivyo kwamba ina kuwa kitu yake mwenyewe.

1165
00:57:22,410 --> 00:57:26,360
Hizi ni juu ya indention huo.

1166
00:57:26,360 --> 00:57:30,120
>> Hivyo tunajua kwamba kichwa inahitaji
kuwa katika kiwango sawa kama mwili,

1167
00:57:30,120 --> 00:57:32,040
lakini chini ya HTML.

1168
00:57:32,040 --> 00:57:33,100
Ni nini sisi hapa.

1169
00:57:33,100 --> 00:57:36,810
Kichwa na mwili ni ndugu,
lakini wao ni chini ya HTML.

1170
00:57:36,810 --> 00:57:39,130
Na kisha sisi tu kwenda katika kila moja ya haya.

1171
00:57:39,130 --> 00:57:44,370
Hivyo kichwa ina jina, ambayo
ina jaribio, kama tunaona hapa.

1172
00:57:44,370 --> 00:57:48,210
Na kisha katika kesi hii, tuna
mwili, ambayo ina mistari hizi tatu.

1173
00:57:48,210 --> 00:57:51,470
Hivyo haya yote ni
ndugu wote chini ya mwili.

1174
00:57:51,470 --> 00:57:53,732
OK?

1175
00:57:53,732 --> 00:57:56,190
Hivyo hopefully wakati unaweza kuona
kitu kama hii, wewe ni kama,

1176
00:57:56,190 --> 00:57:57,900
ndiyo, mimi tu kupata kuteka mti.

1177
00:57:57,900 --> 00:58:00,430
Ni gonna kuwa kubwa.

1178
00:58:00,430 --> 00:58:01,130
OK.

1179
00:58:01,130 --> 00:58:03,220
Hivyo alitaka kuhakikisha
nyie alijua kwamba.

1180
00:58:03,220 --> 00:58:10,510
>> Hivyo kwa nini sio sisi kwenda
32 na binary yetu mti?

1181
00:58:10,510 --> 00:58:17,905
Kwa sababu mara tu kuelewa binary
search mti, ni kweli kuwa mbaya.

1182
00:58:17,905 --> 00:58:20,960
Hivyo Everett, naweza erase-- mimi
maana, hayo yote ni online, pia.

1183
00:58:20,960 --> 00:58:24,130
Hivyo kama una maswali yoyote.

1184
00:58:24,130 --> 00:58:44,410

1185
00:58:44,410 --> 00:58:46,370
>> Waliopotea nafasi kidogo huko, lakini ni sawa.

1186
00:58:46,370 --> 00:58:50,190
Hivyo search binary mti ni
njia tu kuandaa data

1187
00:58:50,190 --> 00:58:57,000
si katika safu, ambapo
mizizi ni daima zaidi

1188
00:58:57,000 --> 00:59:03,500
kuliko mtoto wa kushoto na mizizi ni
daima chini ya mtoto kulia.

1189
00:59:03,500 --> 00:59:04,770
OK.

1190
00:59:04,770 --> 00:59:08,160
>> Hivyo tuna search mti huu mkubwa hapa.

1191
00:59:08,160 --> 00:59:13,360
Tuna namba hizi, 34,
59, 20, 106, 36, na 52.

1192
00:59:13,360 --> 00:59:15,160
Na tunahitaji kupanga
yao kwa namna

1193
00:59:15,160 --> 00:59:22,100
kama kwamba mzizi ni mkubwa
kuliko kila kitu kwa upande wa kushoto

1194
00:59:22,100 --> 00:59:24,750
na ni chini ya
kila kitu upande wa kulia.

1195
00:59:24,750 --> 00:59:29,580
Na kawaida, nini
wanataka kufanya ni kujaribu na kupata

1196
00:59:29,580 --> 00:59:31,720
kitu kuhusu katikati.

1197
00:59:31,720 --> 00:59:35,420
Kwa miti binary search, unaweza kuwa na
kucheza karibu kidogo na hayo.

1198
00:59:35,420 --> 00:59:40,850
>> Lakini katika kesi hii, hebu tu
kudhani kwamba sisi kujua moja hii kwanza.

1199
00:59:40,850 --> 00:59:44,870
Hivyo 36 ni moja wetu wa kwanza hapa.

1200
00:59:44,870 --> 00:59:46,790
Kwa kawaida, napenda kujaribu
na kuchagua kitu

1201
00:59:46,790 --> 00:59:50,160
kuhusu katikati kwamba itabidi
pengine mavuno matokeo bora.

1202
00:59:50,160 --> 00:59:56,200
Hivyo sasa tunajua kwamba kila kitu juu ya
upande huu mahitaji ya kuwa chini ya 36.

1203
00:59:56,200 --> 00:59:59,520
Lakini pia, nini unaweza kuona ni
kwamba tuna mbili matangazo zaidi ya hapa.

1204
00:59:59,520 --> 01:00:04,350
Hivyo, ikiwa tunajua kuwa tunahitaji mbili
idadi ambayo ni chini ya mizizi,

1205
01:00:04,350 --> 01:00:08,670
basi unaweza ili tu haya
na kuchagua idadi ya tatu.

1206
01:00:08,670 --> 01:00:09,390
OK.

1207
01:00:09,390 --> 01:00:11,550
>> Hivyo kwa nini sio sisi kuanza na upande huu?

1208
01:00:11,550 --> 01:00:17,270
Hivyo, ikiwa tunajua kwamba kila kitu katika
upande huu mahitaji ya kuwa chini ya 36--

1209
01:00:17,270 --> 01:00:21,290
lakini kama sisi kuangalia hii moja,
tunajua kwamba idadi hii

1210
01:00:21,290 --> 01:00:25,180
ina kuwa chini ya idadi hii, sawa?

1211
01:00:25,180 --> 01:00:30,810
Kwa sababu idadi hii hapa
ni upande wa kulia.

1212
01:00:30,810 --> 01:00:34,680
Na kumbuka, kama vile katika kubwa wetu
mti, kila kitu juu ya haki

1213
01:00:34,680 --> 01:00:37,130
mahitaji ya kuwa kubwa kuliko mizizi.

1214
01:00:37,130 --> 01:00:40,540
Kwa njia hii, tunajua kwamba
vilivyomo katika mahitaji hii

1215
01:00:40,540 --> 01:00:43,090
kuwa kubwa kuliko chochote hapa.

1216
01:00:43,090 --> 01:00:44,020
OK?

1217
01:00:44,020 --> 01:00:46,340
>> Hivyo tuna maamuzi mawili
kwa Bubbles hizi mbili.

1218
01:00:46,340 --> 01:00:49,830
Tuna 32 na 34-- au sorry.

1219
01:00:49,830 --> 01:00:53,330
20 na 34.

1220
01:00:53,330 --> 01:00:56,500
Hivyo ni jinsi gani unafikiri
tupate kuweka haya katika?

1221
01:00:56,500 --> 01:00:59,230
Kama hii moja ina kuwa
kubwa kuliko hii moja,

1222
01:00:59,230 --> 01:01:04,340
hiyo ina maana tunataka
kuwa 20 hapa na 34 hapa.

1223
01:01:04,340 --> 01:01:05,340
OK.

1224
01:01:05,340 --> 01:01:09,380
>> Hivyo katika njia hiyo hiyo, sisi kuangalia
katika aina hii ya mti ndogo.

1225
01:01:09,380 --> 01:01:14,994
Na sisi kusema, OK, tuna si 36.

1226
01:01:14,994 --> 01:01:20,460
Tuna 106, 52, na 59.

1227
01:01:20,460 --> 01:01:21,590
Haki?

1228
01:01:21,590 --> 01:01:24,820
Katika kesi hii hapa, sisi
kujua mahitaji kwamba hii moja

1229
01:01:24,820 --> 01:01:29,570
kuwa na jambo moja kwamba ni kubwa kuliko
na jambo moja kwamba ni chini ya yake.

1230
01:01:29,570 --> 01:01:30,100
Haki?

1231
01:01:30,100 --> 01:01:34,580
Hivyo kama sisi kuweka haya ili, ni tu
juu ya kutafuta kwamba thamani katikati tena.

1232
01:01:34,580 --> 01:01:35,766
Hivyo thamani yetu katikati ni 59.

1233
01:01:35,766 --> 01:01:38,524

1234
01:01:38,524 --> 01:01:40,190
Hivyo basi sisi kusema, OK, nini chini ya 59?

1235
01:01:40,190 --> 01:01:41,826
Naam, hiyo ni 52.

1236
01:01:41,826 --> 01:01:42,950
Na nini zaidi kuliko 59?

1237
01:01:42,950 --> 01:01:45,120
Naam, hiyo ni 106.

1238
01:01:45,120 --> 01:01:45,930
OK?

1239
01:01:45,930 --> 01:01:49,430
Hivyo ni kidogo tu kama puzzle.

1240
01:01:49,430 --> 01:01:53,160
Ni kawaida inasaidia, hasa
katika miti midogo kama hii,

1241
01:01:53,160 --> 01:01:56,617
kama wewe tu ili ni, kama wewe
kujua jinsi wengi ni wa kushoto

1242
01:01:56,617 --> 01:01:58,450
na jinsi wengi ni juu ya
haki, kwamba unaweza tu

1243
01:01:58,450 --> 01:02:01,050
kuruhusu kuchagua nini
wanapaswa kuwa mizizi yako.

1244
01:02:01,050 --> 01:02:02,922
Na kisha unaweza aina
ya kazi kutoka huko.

1245
01:02:02,922 --> 01:02:05,080
Mm-hm.

1246
01:02:05,080 --> 01:02:05,580
33?

1247
01:02:05,580 --> 01:02:07,570
Uhakika.

1248
01:02:07,570 --> 01:02:10,120
OK.

1249
01:02:10,120 --> 01:02:17,410
Hivyo tunataka kujenga nodi
au binary search mti.

1250
01:02:17,410 --> 01:02:20,416
Na hebu kuangalia nini wanaweza kuwa katika hilo.

1251
01:02:20,416 --> 01:02:26,130

1252
01:02:26,130 --> 01:02:28,600
Na nadhani mapenzi hii
kweli kuwa tatizo letu la mwisho.

1253
01:02:28,600 --> 01:02:29,510
Ah.

1254
01:02:29,510 --> 01:02:30,010
OK.

1255
01:02:30,010 --> 01:02:48,190

1256
01:02:48,190 --> 01:02:48,690
OK.

1257
01:02:48,690 --> 01:02:55,580

1258
01:02:55,580 --> 01:02:58,040
>> Hii ni kama nini tunaweza
kufikiria kama nodi, haki?

1259
01:02:58,040 --> 01:03:01,610
Tuna baadhi ya thamani, na sisi
kujua kwamba ama

1260
01:03:01,610 --> 01:03:03,830
wameondoka na watoto kulia.

1261
01:03:03,830 --> 01:03:08,420
Search Binary tree-- kwamba njia
kwamba ina, saa zaidi, watoto wawili.

1262
01:03:08,420 --> 01:03:08,920
OK?

1263
01:03:08,920 --> 01:03:12,690

1264
01:03:12,690 --> 01:03:15,540
Hebu fikiria kuhusu jinsi sisi
defined orodha wanaohusishwa, haki?

1265
01:03:15,540 --> 01:03:17,740
>> Tulikuwa na baadhi int kwamba
kuwakilishwa thamani.

1266
01:03:17,740 --> 01:03:20,760
Tulikuwa na baadhi ya pointer kwamba kuwakilishwa
nini ilikuwa ni kwenda ijayo.

1267
01:03:20,760 --> 01:03:23,350
Binary search mti ni sawa sana.

1268
01:03:23,350 --> 01:03:27,980
Bado tuna baadhi ya thamani,
n, kwamba sisi kutoa, sawa?

1269
01:03:27,980 --> 01:03:31,750
Na kisha nilitoa haya sana
wazi kwa mishale,

1270
01:03:31,750 --> 01:03:34,010
kwa sababu wao ni ufanisi kuyatumia.

1271
01:03:34,010 --> 01:03:34,940
OK?

1272
01:03:34,940 --> 01:03:38,500
>> Hivyo n ni kawaida nini?

1273
01:03:38,500 --> 01:03:39,230
Ni baadhi ya thamani.

1274
01:03:39,230 --> 01:03:41,800
Tufanye nini kawaida mteule kama?

1275
01:03:41,800 --> 01:03:42,500
int.

1276
01:03:42,500 --> 01:03:49,980
Hivyo tuna baadhi n int, au thamani int,
au chochote Ningependa simu yake.

1277
01:03:49,980 --> 01:03:53,230
Na kisha tuna kushoto
mtoto na mtoto wa kulia.

1278
01:03:53,230 --> 01:03:54,570
Haki?

1279
01:03:54,570 --> 01:03:58,060
Na tunajua kwamba kile wao uko
point-- nini wao akizungumzia?

1280
01:03:58,060 --> 01:04:01,560
Wao ni akizungumzia nodes nyingine, sawa?

1281
01:04:01,560 --> 01:04:07,540
Hivyo ni jinsi gani sisi kutangaza pointer nodi?

1282
01:04:07,540 --> 01:04:10,480

1283
01:04:10,480 --> 01:04:11,460
>> Watazamaji: [inaudible].

1284
01:04:11,460 --> 01:04:12,472
>> SPIKA 1: Mm-hm.

1285
01:04:12,472 --> 01:04:14,305
Na sisi itawabidi
mbili kati ya hizo, haki?

1286
01:04:14,305 --> 01:04:18,070

1287
01:04:18,070 --> 01:04:26,710
Na kisha tunaweza literally
Je, kushoto kwa mtoto wa kushoto

1288
01:04:26,710 --> 01:04:30,950
na haki kwa mtoto wa kulia.

1289
01:04:30,950 --> 01:04:31,820
Actually-- sorry.

1290
01:04:31,820 --> 01:04:33,155
Sababu tunahitaji struct.

1291
01:04:33,155 --> 01:04:36,250

1292
01:04:36,250 --> 01:04:41,580
>> Hivyo struct ni kwa sababu tuna si
kumaliza kutangaza nodi bado.

1293
01:04:41,580 --> 01:04:47,070
Hivyo nodi ni ndani ya hapa.

1294
01:04:47,070 --> 01:04:49,640
Ni aina ya kama
kujirudia ufafanuzi, haki?

1295
01:04:49,640 --> 01:04:53,140
Hivyo wakati sisi ni ndani ya
ufafanuzi huu, sisi

1296
01:04:53,140 --> 01:04:57,310
si kumaliza kutangaza
node kama muundo,

1297
01:04:57,310 --> 01:04:59,380
hivyo inabidi kufanya struct
node tu kusema, ndiyo,

1298
01:04:59,380 --> 01:05:03,930
sisi ni kwa kweli akimaanisha
nyuma wenyewe aina kitu.

1299
01:05:03,930 --> 01:05:07,410
Hiyo kama mara moja ni
umba, utakuwa na faini.

1300
01:05:07,410 --> 01:05:10,890
>> Hivyo ni jinsi kubwa guys kufikiri hii ni?

1301
01:05:10,890 --> 01:05:13,650
Nini ukubwa wa muundo huu?

1302
01:05:13,650 --> 01:05:14,370
12.

1303
01:05:14,370 --> 01:05:14,870
Kwa nini?

1304
01:05:14,870 --> 01:05:18,990

1305
01:05:18,990 --> 01:05:19,664
Usahihi.

1306
01:05:19,664 --> 01:05:21,830
Na kwa kweli, moja ya
maswali ya kwanza moja Quiz One

1307
01:05:21,830 --> 01:05:24,170
ni kuhusu ukubwa, ambayo ni kwa nini mimi aliuliza.

1308
01:05:24,170 --> 01:05:25,230
Wote haki.

1309
01:05:25,230 --> 01:05:29,350
>> Sisi ni kwenda mwisho, kwa sababu
DCE itakuwa yell saa yangu kama sisi hawana.

1310
01:05:29,350 --> 01:05:33,790
Lakini kama wewe guys una maswali yoyote,
bila shaka, email yangu, basi mimi kujua.

1311
01:05:33,790 --> 01:05:35,190
You guys ni kwenda kwa mwamba yake.

1312
01:05:35,190 --> 01:05:37,210
Mimi nina super msisimko.

1313
01:05:37,210 --> 01:05:39,380
You guys itafanyika kama
ya Jumatano, na kisha

1314
01:05:39,380 --> 01:05:43,150
utasikia kupata kazi juu ya mwisho wako
miradi, na ni kwenda kuwa kutisha.

1315
01:05:43,150 --> 01:05:48,784
>> Mimi nitakuwa hapa karibu
wiki 4:00-4:30

1316
01:05:48,784 --> 01:05:50,700
kama wewe guys wanataka kuja
kuchukua Quizzes yako.

1317
01:05:50,700 --> 01:05:54,410
Kama unataka kupata nami baadhi ya wakati mwingine
au tu kuratibu wakati tofauti,

1318
01:05:54,410 --> 01:05:56,460
kujisikia huru basi mimi kujua.

1319
01:05:56,460 --> 01:05:58,670
Vinginevyo, hii ni sehemu yetu ya mwisho.

1320
01:05:58,670 --> 01:06:01,070
Hivyo ilikuwa kubwa kuona nyie.

1321
01:06:01,070 --> 01:06:02,450
Tafadhali kuchukua pipi zaidi.

1322
01:06:02,450 --> 01:06:05,390
Na bahati nzuri juu ya chemsha bongo yako.

1323
01:06:05,390 --> 01:06:06,687