[JAVA] 백준 1427번 - 소트인사이드

https://www.acmicpc.net/problem/1427

1427번: 소트인사이드

 

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Collections;

public class Main{
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int n = Integer.parseInt(br.readLine());

       ArrayList<Integer> list = new ArrayList<>();

        while(n>0){
            list.add(n%10);
            n/=10;
        }
        Collections.sort(list, Collections.reverseOrder());

        for(int x : list){
            System.out.print(x);
        }


    }
}