[숫자 야구 게임] 김건희

src/main/java/baseball/Application.java

@@ -2,6 +2,8 @@
 
 public class Application {
     public static void main(String[] args) {
-        //TODO: 숫자 야구 게임 구현
+        NumberManager numberManager = new BaseBallNumberManager();
+        GameController game = new GameController(numberManager);
+        game.start();
     }
 }

src/main/java/baseball/BaseBallNumberManager.java

@@ -0,0 +1,69 @@
+package baseball;
+
+import camp.nextstep.edu.missionutils.Randoms;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+public class BaseBallNumberManager implements NumberManager {
+    @Override
+    public Number generate(int start, int end, int count) {
+        List<Integer> numbers = new ArrayList<>();
+        for (int i = 0; i < count; i++) {
+            int num = Randoms.pickNumberInRange(start, end);
+            while (numbers.contains(num)) {
+                num = Randoms.pickNumberInRange(start, end);
+            }
+            numbers.add(num);
+        }
+        return new Number(numbers);
+    }
+
+    @Override
+    public Number parseInput(String input) throws IllegalArgumentException {
+        if (input.length() <= 0 || input.length() > 3) {
+            throw new IllegalArgumentException("입력 값은 세 자리 정수여야 합니다.");
+        }
+
+        try {
+            int num1 = Integer.parseInt(input.substring(0, 1));
+            int num2 = Integer.parseInt(input.substring(1, 2));
+            int num3 = Integer.parseInt(input.substring(2, 3));
+
+            if (num1 == 0 || num2 == 0 || num3 == 0) {
+                throw new IllegalArgumentException("0은 입력할 수 없습니다.");
+            }
+
+            if (num1 == num2 || num2 == num3 || num3 == num1) {
+                throw new IllegalArgumentException("서로 다른 세 자리 정수를 입력해 주세요.");
+            }
+            return new Number(new ArrayList<>(Arrays.asList(num1, num2, num3)));
+        } catch (NumberFormatException e) {
+            throw new IllegalArgumentException("입력 값은 정수여야 합니다.");
+        }
+    }
+
+    @Override
+    public Score calculate(Number user, Number computer) {
+        int ball = 0;
+        int strike = 0;
+
+        List<Integer> userNumbers = user.getNumbers();
+        List<Integer> computerNumbers = computer.getNumbers();
+
+        for (int i = 0; i < userNumbers.size(); i++) {
+            for (int j = 0; j < computerNumbers.size(); j++) {
+                if (userNumbers.get(i).equals(computerNumbers.get(j))) {
+                    if (i == j) {
+                        strike++;
+                    } else {
+                        ball++;
+                    }
+                }
+            }
+        }
+
+        return new Score(ball, strike);
+    }
+}

src/main/java/baseball/GameController.java

@@ -0,0 +1,55 @@
+package baseball;
+
+import camp.nextstep.edu.missionutils.Console;
+
+import static baseball.NumberRange.*;
+
+public class GameController {
+
+    private final NumberManager numberManager;
+
+    public GameController(NumberManager numberManager) {
+        this.numberManager = numberManager;
+    }
+
+    public void start() {
+        while (true) {
+            Number generatedNumber = numberManager.generate(START.value(), END.value(), COUNT.value());
+
+            while (true) {
+                try {
+                    Number inputNumber = readInput();
+                    Score score = numberManager.calculate(inputNumber, generatedNumber);
+                    println(score.toString());
+                    if (score.isDone()) {
+                        println("3개의 숫자를 모두 맞히셨습니다! 게임 종료");
+                        break;
+                    }
+                } catch (IllegalArgumentException ex) {
+                    println("[ERROR] " + ex.getMessage());
+                }
+
+            }
+
+            println("게임을 새로 시작하려면 1, 종료하려면 2를 입력하세요.");
+            if (isClose()) {
+                println("게임 종료");
+                break;
+            }
+        }
+    }
+
+    private void println(String str) {
+        System.out.println(str);
+    }
+
+    private Number readInput() throws IllegalArgumentException {
+        String input = Console.readLine();
+        return numberManager.parseInput(input);
+    }
+
+    private boolean isClose() {
+        String input = Console.readLine();
+        return input.equals("2");
+    }
+}

src/main/java/baseball/Number.java

@@ -0,0 +1,30 @@
+package baseball;
+
+import java.util.List;
+import java.util.Objects;
+
+public class Number {
+
+    private final List<Integer> numbers;
+
+    public Number(List<Integer> numbers) {
+        this.numbers = numbers;
+    }
+
+    public List<Integer> getNumbers() {
+        return numbers;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Number number = (Number) o;
+        return Objects.equals(numbers, number.numbers);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(numbers);
+    }
+}

src/main/java/baseball/NumberManager.java

@@ -0,0 +1,9 @@
+package baseball;
+
+public interface NumberManager {
+    Number generate(int start, int end, int count);
+
+    Number parseInput(String input) throws IllegalArgumentException;
+
+    Score calculate(Number user, Number computer);
+}

src/main/java/baseball/NumberRange.java

@@ -0,0 +1,20 @@
+package baseball;
+
+public enum NumberRange {
+    START(1), END(9), COUNT(3);
+
+    public int value() {
+        return value;
+    }
+
+    private final int value;
+
+    NumberRange(int value) {
+        this.value = value;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(value);
+    }
+}

src/main/java/baseball/Score.java

@@ -0,0 +1,48 @@
+package baseball;
+
+import java.util.Objects;
+
+public class Score {
+    int ball;
+    int strike;
+
+    public Score(int ball, int strike) {
+        this.ball = ball;
+        this.strike = strike;
+    }
+
+    public boolean isDone() {
+        return this.strike == 3;
+    }
+
+    @Override
+    public String toString() {
+        if (ball == 0 && strike == 0) {
+            return "낫싱";
+        }
+
+        if (ball == 0) {
+            return strike + "스트라이크";
+        }
+
+        if (strike == 0) {
+            return ball + "볼";
+        }
+
+        return ball + "볼 " + strike + "스트라이크";
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Score score = (Score) o;
+        return ball == score.ball && strike == score.strike;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(ball, strike);
+    }
+
+}