programmers_124 나라의 숫자_java

https://school.programmers.co.kr/learn/courses/30/lessons/12899#

프로그래머스

class Solution {
    public String solution(int n) {
        String answer = "";
        answer = encoding(n);
        return answer;
    }
    
    public String encoding(int n){
        StringBuilder sb = new StringBuilder();
        while(n > 0){
            int tmp = n%3;            
            if(tmp == 0){
                sb.insert(0, 4);
            }else if(tmp == 1){
                sb.insert(0, 1);
            }else if(tmp == 2){
                sb.insert(0, 2);
            }            
            n = (n-1)/3;
        }
        return sb.toString();
    }
}