题解 | #图片整理#

import java.util.*;
import java.io.*;

public class Main{
    public static void main(String[] args) throws IOException{
        BufferedReader bf=new BufferedReader(new InputStreamReader(System.in));
        String s=null;
        while((s=bf.readLine())!=null){
            char chars[]=s.toCharArray();
            Arrays.sort(chars);
            System.out.println(chars);
        }
    }
}