#include <bits/stdc++.h>
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, x = q[l+r>>1];
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()
{
scanf("%d",&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;
}
原文:https://www.cnblogs.com/zheblog/p/14854792.html