牛客网题目链接
#include <iostream> #include <vector> #include <string> #include <cmath> #include <algorithm> #include <queue> #include <cstdio> #include <cctype> #include <unordered_map> #include <map> using namespace std; const int N = 105; typedef pair<int, string> PII; int main() { string str; while(cin>>str){ sort(str.begin(), str.end()); cout<<str<<endl; } return 0; }