哥也帖一个

#include<iostream>
#include<string>
#include<cstring>
#include<algorithm>
using namespace std;
bool cmp(const char a, const char b)
{
    if( (a|32)==(b|32) ) return a<b; 
    else return (a|32)<( b|32);
}
int main()
{
    int t;
    cin>>t;
    string str;
    while(t--)
    {
              cin>>str;
              sort(&str[0],&str[str.size()],cmp);
              cout<<str<<endl;
              while(next_permutation(&str[0], &str[str.size()],cmp))
                                              cout<<str<<endl;
    }
   
    return 0;
}