题解 | #图片整理#

import java.util.*;

public class Main{ //无情的API选手

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

}