Judgement.java

package baseball.domain.models;

import java.util.ArrayList;
import java.util.List;

public class Judgement {
	private final List<Integer> computerNumbers;
	private final List<Integer> playerNumbers;

	public Judgement(List<Integer> computerNumbers, List<Integer> playerNumbers) {
		this.computerNumbers = new ArrayList<>(computerNumbers);
		this.playerNumbers = new ArrayList<>(playerNumbers);
	}

	public int countStrike() {
		int strikes = 0;
		for (int index = 0; index < playerNumbers.size(); index++) {
			if (isStrike(index)) {
				strikes++;
			}
		}
		return strikes;
	}

	public int countBall() {
		int balls = 0;
		for (int index = 0; index < playerNumbers.size(); index++) {
			if (isStrike(index)) {
				continue;
			}
			if (computerNumbers.contains(playerNumbers.get(index))) {
				balls++;
			}
		}
		return balls;
	}

	private boolean isStrike(int index) {
		return playerNumbers.get(index).equals(computerNumbers.get(index));
	}
}