코딩 테스트 - 저주의 숫자 3

public class Solution {

    public int solution(int n) {

        int answer = 0;

        for (int i = 0; i < n; i++) {

            answer++;

            while (answer % 3 == 0 || containsThree(answer)) {

                answer++;

            }

        }

        return answer;

    }

    private boolean containsThree(int number) {

        String numberStr = String.valueOf(number);

        return numberStr.contains("3");

    }

}