题解 | #图片整理#

import java.util.*;

public class Main{
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        while (scan.hasNext()) {
            char[] arr = scan.nextLine().toCharArray();
            Arrays.sort(arr);
            System.out.println(new String(arr));
        }
    }
}