[프로그래머스] Level 2/124 나라의 숫자/Java

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

class Solution {
    public String solution(int n) {
        String answer = "";
        while(true) {
        	int remain = n%3;
            n = n/3;
	        if(remain == 0) {
	        	answer = "4" + answer;
	        	n--;
	        } else {
	        	answer = remain + answer;
	        }
	        if(n==0) {
	        	break;
	        }
        }
        return answer;
    }
}