题解 | #图片整理#

import java.util.*;
import java.util.Arrays;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String s = in.nextLine();
        int len = s.length();
        char[] charArray = s.toCharArray();
        // System.out.println(charArray);

        Arrays.sort(charArray);

        System.out.println(charArray);





    }
}