231220 가장 큰 수

public String solution(int[] numbers) {
	String result = Arrays.stream(numbers)
			.mapToObj(String::valueOf)
			.sorted((s1, s2) -> (s2 + s1).compareTo(s1 + s2))
			.collect(Collectors.joining());

	return result.startsWith("0") ? "0" : result;
}

출처:https://school.programmers.co.kr/learn/courses/30/lessons/42746