题目描述

C++ 代码

#include <iostream>
#include <algorithm>
using namespace std;
const int N = 10;
int a[N];

int main() {
    int n;
    cin >> n;
    for(int i = 1; i <= n; ++ i) a[i] = i;
    do {
        for(int i = 1; i <= n; ++ i) cout << a[i] << " ";
        cout << endl;
    }while(next_permutation(a + 1, a + 1 + n));
    return 0;
}