Java中从[1，36]随机生成7个不重复的数字，放入一个数组中

http://bbs.csdn.net/topics/360247647

import java.util.Random;

public class Test {
public static void main(String[] args) throws Exception {
int[] a = new int[36];
int[] b = new int[7];
for(int i = 0;i<a.length;i++){
a[i]=i+1;
}
Random r = new Random();
for(int i=0;i<7;i++){
int x=r.nextInt(36-i);
b[i] = a[x];
int t = a[x];
a[x]=a[a.length-1-i];
a[a.length-1-i]=t;
}
for(int x :b){
System.out.print(x+" ");
}
}
}