快速排序

快速的排序

代码如下：

#include <cstdio>#include <algorithm>using namespace std;int a[20000];int main() {int n;scanf("%d", &n);for (int i=1;i<=n;++i) {scanf("%d", &a[i]);}sort(a+1,a+n+1);for (int i=1; i<=n;++i) {printf("%d ",a[i]);}return 0;}