백준1427: 소트인사이드

문제

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

문제 풀이

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String s = sc.next();

        List<Integer> list = new ArrayList<>();
        for (int i = 0; i < s.length(); i++) {
            char c = s.charAt(i);
            list.add(Integer.parseInt(String.valueOf(c)));
        }

        list.sort((x, y) -> y - x);
        StringBuilder sb = new StringBuilder();
        for(int num : list){
            sb.append(num);
        }
        System.out.println(sb);
    }
}