프로그래머스 - OX퀴즈 (JAVA)

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class Solution {
    public String[] solution(String[] quiz) {
        String[] answer = new String[quiz.length];

        for(int i = 0; i < quiz.length; i++){
            String[] parts = quiz[i].split(" ");
            int x = Integer.parseInt(parts[0]);
            int y = Integer.parseInt(parts[2]);
            int z = Integer.parseInt(parts[4]);
            String operator = parts[1];

            if(operator.equals("+")){
                answer[i] = (x + y == z) ? "O" : "X";
            }else{
                answer[i] = (x - y == z) ? "O" : "X";
            }
        }

        return answer;
    }
}