231230 n진수 게임

public String solution(int n, int t, int m, int p) {
	StringBuilder answer = new StringBuilder();

	int length = t * m;

	for (int i = 0; answer.length() < length; i++) {
		answer.append(Integer.toString(i, n));
	}

	StringBuilder result = new StringBuilder();

	for (int i = p - 1; result.length() < t; i += m) {
		result.append(answer.charAt(i));
	}

	return result.toString().toUpperCase();
}

출처:https://school.programmers.co.kr/learn/courses/30/lessons/17687