思路
只需要会用next_permutation,头文件algorithm
参考代码
#include<iostream>
#include<algorithm>
using namespace std;
const int N = 10010;
int num[N];
int n,m;
int main()
{
cin>>n>>m;
for(int i=0;i<n;++i)cin>>num[i];
while(m--&&next_permutation(num,num+n));
for(int i=0;i<n;++i)cout<<num[i]<<" ";
return 0;
}