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Video: Koj puas tuaj yeem ntxiv ob arrays hauv Java?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Koj tsis tuaj yeem siv tus neeg teb xov tooj ntxiv rau ntxiv ob arrays hauv Java e.g. yog koj muaj ob int arrays a1 thiab a2, ua a3 = a1 + a2 yuav muab compile lub sij hawm yuam kev. Tib txoj kev mus ntxiv ob arrays hauv Java yog mus iterate dua lawv thiab ntxiv tus kheej cov ntsiab lus thiab khaws cia rau hauv ib qho tshiab array.
Raws li txoj cai, koj ua li cas suav cov array hauv Java?
Qhov kev pab cuam tso zis kuj qhia hauv qab no
- pej xeem chav Array_Sum.
- int n, sum = 0;
- Scanner s = new Scanner(System.
- Qhov system. tawm. print("Enter no. of elements you want in array:");
- n = s. nextInt();
- int a = new int[n];
- Qhov system. tawm. println("Enter all the elements:");
- for(int i = 0; i <n; i++)
Tsis tas li ntawd, peb puas tuaj yeem ntxiv ob arrays hauv C? Hauv qhov kev pab cuam no, tus neeg siv tau hais kom nkag mus rau tus lej ntawm kab r thiab kab c . Tom qab ntawd, tus neeg siv tau hais kom nkag mus rau cov ntsiab lus ntawm lub ob matrices (ntawm kev txiav txim r * c ). Peb ces ntxiv cov ntsiab lus ntawm ob matrices thiab khaws cia rau hauv lwm matrix ( ob - qhov ntev array ).
Tsis tas li, koj yuav ntxiv ib qho array rau ArrayList hauv Java li cas?
Siv Arrays . asList() method - Hla qhov yuav tsum tau ua array mus rau txoj kev no thiab tau txais ib daim ntawv teev khoom thiab dhau nws ua ib qho parameter rau tus tsim ntawm tus ArrayList chav kawm. Kev sau. addAll() method - Tsim ib daim ntawv teev npe tshiab ua ntej siv txoj kev no thiab tom qab ntawd ntxiv array yam uas siv txoj kev no rau cov npe uas twb muaj lawm.
Yuav ua li cas koj luam ib array hauv Java?
Koj ua tsis tau luam array hais ncaj qha rau hauv Java , koj yuav tsum siv Arrays . toString() los yog Arrays . deepToString() rau luam array cov ntsiab lus. Siv toString() yog tias koj xav tau luam tawm ib-dimensional array thiab siv deepToString() txoj kev yog tias koj xav tau luam tawm ob-dimensional array.
Pom zoo:
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