https://blog.csdn.net/c18219227162/article/details/50301513
#include<iostream> #include<algorithm> using namespace std; int main(){ int a[9]={1,2,3,4,5,6}; do{ for(int i=0;i<6;i++) cout<<a[i]<<' '; cout<<endl; }while(next_permutation(a,a+6)); }