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In Java for example:

int x[] = {1,2,3,4};
    
int y[] = x;
y[0] = 100;
System.out.println(x[0]);
System.out.println(y[0]);

Output:

100
100

How can I change the values of int y without changing values of int x?

Mark Rotteveel
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AbDullA
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  • You do not copy it. X and y points to the same array – Jens Jul 19 '22 at 05:38
  • Even though Java allows you to use `int x[]`, that syntax is discouraged (and IMHO a historic mistake). The general convention is to use `int[] x`, as that is far more clear and readable to most Java programmers. – Mark Rotteveel Jul 19 '22 at 07:18

1 Answers1

1

You are pointing to same array location hence updating one will update the second.

Use clone() method to create copy of the array.

    int x[] = {1,2,3,4};
    
    int y[] = x.clone();
    y[0] = 100;
    System.out.println(x[0]);
    System.out.println(y[0]);

Output :

1
100
Pirate
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  • So there's no benefit in doing what we did before? I mean what is the point of y if I say int y = x; – AbDullA Jul 19 '22 at 05:59