急，在线等，两个随机数组重复问题

Question

如图
代码如下
void randnums(int *arr, int n)
{
int datalength = n;
do {
srand((unsigned)time(NULL)); //用时间做种，每次产生随机数不一样
int  number = random(datalength);
datalength--;
int tmp = arr[number];
arr[number] = arr[datalength];
arr[datalength] = tmp;
} while (datalength>0);
}
调用两次函数，数组重复

Answer 1

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