[programmers] 완주하지 못한 선수

import java.util.Arrays;

public class Solution {

	public String solution(String[] participant, String[] completion) {
		Arrays.sort(participant);
		Arrays.sort(completion);

		int i;
		for (i = 0; i < completion.length; i++) {
			if (!participant[i].equals(completion[i]))
				return participant[i];
		}
		return participant[i];
	}
}