题解 | #图片整理#

import java.util.*;

public class Main{
    public static void main(String args[]){
        Scanner sc = new Scanner(System.in);
        while(sc.hasNext()){
            String str = sc.nextLine();
            char[] ch = str.toCharArray();
            Arrays.sort(ch);
            for(char c : ch){
                System.out.print(c);
            }
            System.out.println();
        }
        
    }
}