生成6位随机数

public static void main(String[] args) {
//创建一个含有随机数的长度为10的数组
int[] array = {0,1,2,3,4,5,6,7,8,9};
Random rand = new Random();
for (int i = 10; i > 1; i--) {
int index = rand.nextInt(i);
int tmp = array[index];
array[index] = array[i - 1];
array[i - 1] = tmp;
}
int result = 0;
//从上面创建的随机数数组中取6位组成6位随机数
for(int i = 0; i < 6; i++)
result = result * 10 + array[i];
}

转载于:https://www.cnblogs.com/nana-blog/p/4786332.html