AcWing 785. 快速排序
原题链接
简单
作者:
初静
,
2021-03-12 17:58:28
,
所有人可见
,
阅读 250
#include <iostream>
#include <algorithm>
using namespace std;
const int N = 1e6 + 10;
int n;
int q[N];
void quick_sort(int q[], int l, int r) {
if (l > r) return ;
int i = l - 1, j = r + 1;
int x = q[l];
while (i < j) {
do i ++; while (q[i] < x);
do j --; while (q[j] > x);
if (i < j) swap(q[i], q[j]);
}
quick_sort(q, l, j);
quick_sort(q, j + 1, r);
}
int main () {
cin >> n;
for (int i = 0; i < n; i ++) scanf("%d", &q[i]);
quick_sort(q, 0, n - 1);
for (int i = 0; i < n; i ++) printf("%d ", q[i]);
return 0;
}