C # Several ways to copy an array

Suddenly come into contact, so just write about sharing.

First, the array is a reference type, so be careful not to copy the address and not copy the value when copying!

in fact, when copying an array, be sure to use the New Creating a new space in the heap is dedicated to storing the array, which is valid.

( 1 )

int [] pins = {9, 3, 7, 2};

Int[] Copy=new int[pins.length];

&NBSP;        &NBSP;       for   (int  i = 0 ; i < copy.length; i++)

&NBSP;  &NBSP;             {

&NBSP;  &NBSP;                     Copy[i] = pins[i];

     }

(2)

&NBSP;                  int [] Copy = < Span style= "word-wrap:normal; Word-break:normal; Color:blue ">new  int [Pins. Length];

Pins. CopyTo (copy, 0);

(3)   

int[] pins= new int[4]{9,3,7,2};

Int[] alias=pins;

Note that This copy is just a reference, just passing the address of the data to the alias array, So it's not recommended to copy arrays in this way;

(4)

Array.copy (pins,copy,copy. Length)

(5)

&NBSP;          int[] copy= (int[]) pins. Clone ();

&NBSP;           here to explain why to use int[" Forced type conversion because clone result type is object , so you need to cast to int[ ]

Object class is actually the base class for all of our classes.

C # Several ways to copy an array