Qhov muaj npe ntawm cov khoom ntawm tib lub hom hu ua array. Xws li lub koom haum ntawm cov ntaub ntawv muaj ntau qhov pom tseeb thiab ib qho tsis zoo - thaum tsim ib qho kev ntsuas, nws yuav tsum tshaj tawm nws qhov loj me ua ntej, uas tsis tuaj yeem hloov los ntawm cov lus pom zoo rau yav tom ntej. Cov kev daws rau qhov teeb meem no yog tsim kom muaj cov ntaub ntawv hloov chaw uas muaj peev xwm hloov tus naj npawb ntawm lawv lub ntsiab ntawm txhua lub sijhawm. Ntxiv mus, rau qhov no, koj tuaj yeem siv ob qho kev tsim cov chav kawm uas twb tau tsim lawm, thiab siv koj tus kheej siv cov txheej txheem kev sau ntawv.
Cov Lus Qhia
Kauj ruam 1
Lub ntsiab tseem ceeb ntawm cov khoom siv sib hloov tau zoo yog kom faib kev nco rau cov ntaub ntawv khaws cia rau hauv nws raws nraim hauv qhov loj me uas nws xav tau thaum lub sijhawm. Nws yog qhov yooj yim tshaj plaws los siv cov kev tsim kho no hauv daim ntawv ntawm cov chav kawm - qhwv ib qho rau ib qho khoom siv. Ntawm no nws yog qhov yuav tsum tau muab rau tag nrho cov haujlwm uas ua tiav kev faib thiab tso tawm ntawm lub cim xeeb rau ib qho array, ntxiv rau cov neeg ua haujlwm uas muab kev nkag mus rau nws cov ntsiab.
Kauj ruam 2
Tsim ib qho khoom ntawm chav ua kom muaj zog dynamic wrapper, thiab tus tsim kho yuav cia li faib cov cim xeeb ntawm qhov loj me. Yog tias, raws li cov kab tau sau, lub cim xeeb rau cov khoom yuav raug muab coj los ua tiav, thaum ntxiv cov ntaub ntawv txuas ntxiv, cov haujlwm hauv qab no tau ua: - tag nrho cov ntaub ntawv los ntawm cov array tau khaws cia rau hauv ib ntus cia (ntu pabcuam); tso los ntawm cov lus txib tshwj xeeb (pub dawb, rho tawm); - nco tau muab faib nyob rau hauv qab ntawm qhov loj me uas yuav tsum muaj tag nrho cov ntaub ntawv - txhua qhov "qub" qhov tseem ceeb tau muab tso rau hauv cov ntawv tshiab los ntawm kev khaws ib ntus thiab ib qho tshiab keeb kwm ntxiv.
Kauj ruam 3
Txoj hauv kev zoo tshaj plaws los ua haujlwm nrog cov chaw tsim hluav taws xob zoo yog siv cov chav kawm uas tam sim no. Ib qho ntawm cov qauv zoo nkauj tshaj plaws yog chav kawm vector. Nws suav tag nrho cov haujlwm thiab cov thev naus laus zis tsim nyog rau kev ua haujlwm ntawm ib qho hloov mus tau zoo. Ntxiv mus, lub tsev qiv ntawv module uas muaj chav kawm no tau muab nrog txhua cov qauv ntawm C ++ compiler.
Kauj ruam 4
Xws li lub tsev qiv ntawv dynamic array siv cov lus cim #include. Siv chav kawm vector los tsim ib qho khoom. Tsiv los ntawm cov khoom ua ke yog tib yam li hauv rooj plaub li niaj zaus, siv ntsuas. Cov yam ntxwv tshwj xeeb ntawm no yog cov haujlwm rau ntxiv thiab tshem tawm cov tshiab, nrog rau ntau txoj kev pabcuam. Qhov piv txwv ntawm cov cai rau kev tsim thiab kev ua haujlwm ntawm cov txheej txheem dynamic vector: #include vector; vector int Mass; // kev tshaj tawm ntawm cov khoom sib txawv nrog cov ntsiab ntawm hom intMas.push_back (10); // ntxiv rau thawj ntu - naj npawb 10 Mas.push_back (15); // ntxiv rau qhov thib ob ntxiv - tus lej 15Mas [1] = 30; // tus thib ob yog sau tus lej 30Mas.pop_back (); // kev tshem tawm qhov kawg ntawm lub array Ntawm no, thaum tsim kom muaj qhov sib txawv dynamic npe hu ua Mass, hom ntawm nws cov ntsiab lus (int) yuav tsum tau teev tseg, qhov ntev tsis tau hais hauv qhov no.
