231121_TIL

What i did

• 알고리즘 프로그래머스

class Solution {
    public int solution(String s) {
        int answer = 0;
        answer = Integer.parseInt(s);
        return answer;
    }
}

import java.util.*;

class Solution {
    public long solution(long n) {
        String answer = "";
        String str = Long.toString(n);
        
        Integer[] arr = new Integer[str.length()];
        
        for(int i =0;i<str.length();i++){
            String s = str.substring(i,i+1);
            arr[i] = Integer.parseInt(s);
        }
        
        Arrays.sort(arr, Collections.reverseOrder());
                
        for(int i=0;i<str.length();i++){
            answer += arr[i];
        }
        
        return Long.parseLong(answer);
    }
}