题解 | #图片整理#

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

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