[0]주차 6기 객제지향 코드 연습(김명관)

src/main/java/racingcar/Application.java

@@ -1,7 +1,28 @@
 package racingcar;
 
+import java.util.List;
+
 public class Application {
     public static void main(String[] args) {
-        // TODO: 프로그램 구현
+        try {
+            InputManager inputManager = new InputManager();
+            OutputManager outputManager = new OutputManager();
+
+            List<String> carNames = inputManager.getCarNames();
+            int numberOfRounds = inputManager.getNumberOfRounds();
+
+            RacingGame game = new RacingGame(carNames);
+
+            System.out.println("\n실행 결과");
+            for (int i = 0; i < numberOfRounds; i++) {
+                game.playRound();
+                outputManager.printRoundResult(game.getCars());
+            }
+
+            outputManager.printWinners(game.getWinners());
+        } catch (IllegalArgumentException e) {
+            System.out.println("[ERROR] " + e.getMessage());
+            throw e;
+        }
     }
 }

src/main/java/racingcar/Car.java

@@ -0,0 +1,31 @@
+package racingcar;
+
+public class Car {
+    private final String name;
+    private int position = 0;
+
+    public Car(String name) {
+        if (name == null || name.isBlank() || name.length() > 5) {
+            throw new IllegalArgumentException("자동차 이름은 1자 이상 5자 이하만 가능합니다.");
+        }
+        this.name = name;
+    }
+
+    public void move(int randomNumber) {
+        if (randomNumber >= 4) {
+            position++;
+        }
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public int getPosition() {
+        return position;
+    }
+
+    public String getPositionString() {
+        return "-".repeat(position);
+    }
+}

src/main/java/racingcar/InputManager.java

@@ -0,0 +1,34 @@
+package racingcar;
+
+import camp.nextstep.edu.missionutils.Console;
+import java.util.Arrays;
+import java.util.List;
+
+public class InputManager {
+
+    public List<String> getCarNames() {
+        System.out.println("경주할 자동차 이름을 입력하세요.(이름은 쉼표(,) 기준으로 구분)");
+        String input = Console.readLine();
+        List<String> carNames = Arrays.asList(input.split(","));
+        validateCarNames(carNames);
+        return carNames;
+    }
+
+    public int getNumberOfRounds() {
+        System.out.println("시도할 회수는 몇회인가요?");
+        String input = Console.readLine();
+        try {
+            return Integer.parseInt(input);
+        } catch (NumberFormatException e) {
+            throw new IllegalArgumentException("시도 횟수는 숫자여야 합니다.");
+        }
+    }
+
+    private void validateCarNames(List<String> carNames) {
+        for (String name : carNames) {
+            if (name.isBlank() || name.length() > 5) {
+                throw new IllegalArgumentException("자동차 이름은 1자 이상 5자 이하만 가능합니다.");
+            }
+        }
+    }
+}

src/main/java/racingcar/OutputManager.java

@@ -0,0 +1,18 @@
+package racingcar;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class OutputManager {
+
+    public void printRoundResult(List<Car> cars) {
+        for (Car car : cars) {
+            System.out.println(car.getName() + " : " + car.getPositionString());
+        }
+        System.out.println();
+    }
+
+    public void printWinners(List<String> winners) {
+        System.out.println("최종 우승자 : " + String.join(", ", winners));
+    }
+}

src/main/java/racingcar/RacingGame.java

@@ -0,0 +1,38 @@
+package racingcar;
+
+import camp.nextstep.edu.missionutils.Randoms;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class RacingGame {
+    private final List<Car> cars;
+
+    public RacingGame(List<String> carNames) {
+        this.cars = carNames.stream()
+                .map(Car::new)
+                .collect(Collectors.toList());
+    }
+
+    public void playRound() {
+        for (Car car : cars) {
+            car.move(Randoms.pickNumberInRange(0, 9));
+        }
+    }
+
+    public List<Car> getCars() {
+        return cars;
+    }
+
+    public List<String> getWinners() {
+        int maxPosition = cars.stream()
+                .mapToInt(Car::getPosition)
+                .max()
+                .orElse(0);
+
+        return cars.stream()
+                .filter(car -> car.getPosition() == maxPosition)
+                .map(Car::getName)
+                .collect(Collectors.toList());
+    }
+}