230816 푸드 파이트 대회

public String solution(int[] food) {
	StringBuilder answer = new StringBuilder();

	StringBuilder left = new StringBuilder();
	StringBuilder right = new StringBuilder();

	for (int i = 1; i < food.length; i++) {
		if (food[i] != 0) {
			int halfCount = food[i] / 2;
			left.append(String.valueOf(i).repeat(halfCount));
			right.insert(0, String.valueOf(i).repeat(halfCount));
		}
	}

	answer.append(left).append("0").append(right);

	return answer.toString();
}

출처:https://school.programmers.co.kr/learn/courses/30/lessons/134240