Set an array value to another arrays value

Question

I have two arrays, and I am trying to copy the array values from one to the other, but not all of them. Here is the code that I have. I am getting an error on the line with finalplace[y] = place[y];. I have another array called place, which is the longer array. I do not want to make an exact copy of the place array. I just want to get the first array values where their placement is less than count. Any ideas?

int [] finalplace = new int [count];
for (int y = 0; y <= count; y = y + 1) {
    finalplace[y] = place[y];
}

Neil · Accepted Answer · 2013-03-02 19:54:48Z

1

The indices of your new array range up to, but not including, count. So you should do the same with your for loop.

Note that System.arraycopy will let you copy part of an array.

answered Mar 2, 2013 at 19:54

Neil

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Olimpiu POP · Accepted Answer · 2013-03-02 19:57:02Z

1

Use the utility class

java.util.Arrays

there are a bunch of copy methods. For instance copyOf or copyOfRange

answered Mar 2, 2013 at 19:57

Olimpiu POP

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Nidhish Krishnan · Accepted Answer · 2013-03-02 19:58:34Z

1

You can try using System.arraycopy()

int[] a = new int[]{1,2,3,4,5};
int[] b = new int[5];

System.arraycopy( a, 0, b, 0, a.length );

answered Mar 2, 2013 at 19:58

Nidhish Krishnan

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UNayak · Accepted Answer · 2013-03-02 20:10:30Z

0

Use Arrays.copyOf method instead of taking burden of copying each element.

answered Mar 2, 2013 at 20:10

UNayak

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