例题:快速排序模板:
AC代码:
源码:
#include <iostream>
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 x = q[l], i = l - 1, j = 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;
}
(sort)快排:
#include<iostream>
using namespace std;
#include<algorithm>
#include<vector>
vector<int>v;
int n,nn;
int main()
{
cin>>n;
for(int i=0;i<n;i++){
cin>>nn;
v.push_back(nn);
}
sort(v.begin(),v.end());
for(int i=0;i<v.size();i++){
cout<<v[i]<<" ";
}
return 0;
}
#include <bits/stdc++.h>
using namespace std;
const int N = 1E6 + 3;
int a[N],b[N],idx;
int main(void) {
int n;
cin >> n;
for (int i = 0; i < n; i++) {
cin >> a[i];
}
sort(a,a+n);
for (int i = 0; i < n; i++) {
cout << a[i] << " ";
}
return 0;
}
总结:其实直接用c++的sort即可,没必要直接写出来源码。感谢大家的观看!!!