Array - EASY CSHARP

Array

Mng

? Kh?i nim ? Khai b?o v? khi to mng ? C?c thao t?c tr?n mng

Mng

? Gii thiu

? Mng l? tp hp c?c bin c? c?ng kiu d liu, c?ng t?n nhng c? ch s kh?c nhau.

? Trong C#, mng c? ch s bt ?u l? 0 v? lu?n lu?n l? mng ?ng (mng c? kh nng thay ?i k?ch thc).

? V? d: Mng nguy?n 5 phn t

01234

Ch s

10 20 15 6 8

Gi? tr

Khai b?o v? khi to mng

? Khai b?o kh?ng khi to k?ch thc v? gi? tr

[ ] T?n_mng; V? d: int[ ] a;

? Khai b?o c? khi to k?ch thc nhng kh?ng khi to gi? tr ban ?u:

[ ] T?n_mng = new [];

V? d: Khai b?o mng nguy?n 10 phn t int[ ] a = new int[10];

Khai b?o v? khi to mng

? Khai b?o c? khi to k?ch thc v? khi to gi? tr ban ?u:

[ ] T?n_mng = new [] {gi? tr 1, gi? tr 2, gi? tr 3, ...};

hoc: [ ] T?n_mng = {gi? tr 1, gi? tr 2, gi? tr 3,

...}; V? d: Khai b?o v? khi to mng nguy?n c? 5 phn t int[ ] a = new int[5]{2,10,4,8,5}; int[ ] a = {2, 10, 4, 8, 5};

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