[숫자야구게임] 차현수 제출합니다

src/main/java/baseball/Application.java

@@ -1,7 +1,99 @@
 package baseball;
 
+import camp.nextstep.edu.missionutils.Randoms;
+import camp.nextstep.edu.missionutils.Console;
+import java.util.ArrayList;
+import java.util.List;
+
 public class Application {
+    private static final int MAX_NUM = 9;
+    private static final int NUM_SIZE = 3;
+
     public static void main(String[] args) {
-        // TODO: 프로그램 구현
+        do {
+            playGame();
+        } while (keepGoing());
+    }
+    private static List<Integer> makeRandomNumbers() {
+        List<Integer> numbers = new ArrayList<>();
+        while (numbers.size() < NUM_SIZE) {
+            int randomNumber = Randoms.pickNumberInRange(1, MAX_NUM);
+            if (!numbers.contains(randomNumber)) {
+                numbers.add(randomNumber);
+            }
+        }
+        return numbers;
+    }
+
+    private static List<Integer> inputNumbers() {
+        System.out.print("숫자를 입력해 주세요 : ");
+        String input = Console.readLine();
+        if (input.length() != NUM_SIZE) {
+            throw new IllegalArgumentException("서로 다른 3자리의 수를 입력해 주세요.");
+        }
+
+        List<Integer> numbers = new ArrayList<>();
+        for (char ch : input.toCharArray()) {
+            numbers.add(Character.getNumericValue(ch));
+        }
+        return numbers;
+    }
+
+    private static int countStrikes(List<Integer> computer, List<Integer> user) {
+        int count = 0;
+        for (int i = 0; i < NUM_SIZE; i++) {
+            if (computer.get(i).equals(user.get(i))) {
+                count++;
+            }
+        }
+        return count;
+    }
+
+    private static int countBalls(List<Integer> computer, List<Integer> user) {
+        int count = 0;
+        for (int i = 0; i < NUM_SIZE; i++) {
+            if (computer.contains(user.get(i)) && !computer.get(i).equals(user.get(i))) {
+                count++;
+            }
+        }
+        return count;
+    }
+
+    private static void playGame() {
+        List<Integer> computerNumbers = makeRandomNumbers();
+
+        while (true) {
+            List<Integer> userNumbers = inputNumbers();
+
+            int strikes = countStrikes(computerNumbers, userNumbers);
+            int balls = countBalls(computerNumbers, userNumbers);
+
+            if (strikes == NUM_SIZE) {
+                System.out.println("3스트라이크\n3개의 숫자를 모두 맞히셨습니다! 게임 종료");
+                return;
+            }
+
+            if (strikes == 0 && balls == 0) {
+                System.out.println("낫싱");
+                continue;
+            }
+
+            if (balls > 0) {
+                System.out.print(balls + "볼 ");
+            }
+
+            if (strikes > 0) {
+                System.out.print(strikes + "스트라이크");
+            }
+
+            System.out.println();
+        }
     }
+
+    private static boolean keepGoing() {
+        System.out.println("게임을 새로 시작하려면 1, 종료하려면 2를 입력하세요.");
+        String input = Console.readLine();
+        return "1".equals(input);
+    }
+
 }