?? 唯一隨機數組1.txt
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import java.util.Random;
public class Util
{
private static Random rd = null;
public static int[] random(int[] src)
{
if(src == null)
{
return null;
}
rd = new Random();
int[] tmp = new int[src.length];
int num = src.length;
int index;
for(int i = 0;i < src.length;i++)
{
index = Math.abs(rd.nextInt()) % num;
tmp[i] = src[index];
src[index] = src[num - 1];
num--;
}
return tmp;
}
public static void main(String[] args)
{
int[] test = {1,2,3,4,5,6,7,8,9};
int a[] = random(test);
for(int i = 0;i < a.length;i++){
System.out.println(a[i]);
}
}
}
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