[프로그래머스/Java] 세로 읽기

-Code

class Solution {
    public String solution(String my_string, int m, int c) {
        String answer = "";

        for (int i = 0; i < my_string.length(); i = i + m) {
            answer += my_string.charAt(i + c - 1);
        }

        return answer;
    }
}