Referee.java

package baseball.domain;

import java.util.List;
import java.util.Objects;

public class Referee {
    public static Score compare(List<Integer> computer, List<Integer> player) {
        int strike = 0;
        int ball = 0;

        for (int i = 0; i < 3; i++) {
            strike += countStrike(computer.get(i), player.get(i));
            ball += countBall(computer, player, i);
        }
        return new Score(strike, ball);
    }

    private static int countStrike(int computerNum, int playerNum) {
        if (computerNum == playerNum) return 1;
        return 0;
    }

    private static int countBall(List<Integer> computer, List<Integer> player, int index) {
        if (computer.contains(player.get(index)) && !Objects.equals(computer.get(index), player.get(index))) {
            return 1;
        }
        return 0;
    }
}