[이현성_BackEnd] 2주차 과제 제출입니다.

docs/README.md

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+1. 자동차 이름입력받기
+2. 시도할 경주횟수 입력받기
+3. 차 객체 만들기
+4. 경주차 리스트 만들기
+5. 차 움직이기
+6. 모든차의 위치 보여주기
+7. 우승자 결정
+8. 우승자 출력

src/main/java/racingcar/Application.java

@@ -1,7 +1,44 @@
 package racingcar;
 
+import camp.nextstep.edu.missionutils.Console;
+
+import java.util.ArrayList;
+import java.util.List;
+
 public class Application {
     public static void main(String[] args) {
-        // TODO: 프로그램 구현
+        List<Car> cars = inputCarNames();
+        RacingResultPrinter printer = new RacingResultPrinter();
+        int attempts = inputAttemptCount();
+        RacingGame game = new RacingGame(cars);
+        System.out.println("\n실행 결과");
+        game.play(attempts);
+        printer.printWinners(game.findWinners());
+    }
+
+    private static List<Car> inputCarNames() {
+        System.out.println("경주할 자동차 이름을 입력하세요.(이름은 쉼표(,) 기준으로 구분)");
+        String input = Console.readLine();
+        String[] carNames = input.split(",");
+        List<Car> cars = new ArrayList<>();
+
+        for (String carName : carNames) {
+            carName = carName.trim();
+            if (carName.length() > 5) {
+                throw new IllegalArgumentException("자동차 이름은 5자 이하만 가능합니다.");
+            }
+            cars.add(new Car(carName));
+        }
+        return cars;
+    }
+
+    private static int inputAttemptCount() {
+        System.out.println("시도할 회수는 몇회인가요?");
+        try {
+            return Integer.parseInt(Console.readLine());
+        } catch (NumberFormatException e) {
+            throw new IllegalArgumentException("숫자를 입력해야 합니다.");
+        }
     }
 }
+

src/main/java/racingcar/Car.java

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+package racingcar;
+
+import camp.nextstep.edu.missionutils.Randoms;
+
+public class Car {
+    private final String carName;
+    private int position = 0;
+
+    public Car(String carName) {
+        this.carName = carName;
+    }
+
+    public void move() {
+        if (Randoms.pickNumberInRange(0, 9) >= 4)
+            position++;
+    }
+
+    public int getPosition() {
+        return position;
+    }
+
+    public String getName() {
+        return carName;
+    }
+}

src/main/java/racingcar/RacingGame.java

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+package racingcar;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class RacingGame {
+    private final List<Car> cars;
+    private final RacingResultPrinter printer = new RacingResultPrinter();
+    public RacingGame(List<Car> cars) {
+        this.cars = cars;
+    }
+
+    public void play(int attempts) {
+        for (int i = 0; i < attempts; i++) {
+            cars.forEach(Car::move);
+            printer.printCurrentCarPosition(cars);
+        }
+    }
+
+    public List<String> findWinners() {
+        int fastest = 0;
+        for (Car car : cars) {
+            if (car.getPosition() > fastest) {
+                fastest = car.getPosition();
+            }
+        }
+
+        List<String> winners = new ArrayList<>();
+        for (Car car : cars) {
+            if (car.getPosition() == fastest) {
+                winners.add(car.getName());
+            }
+        }
+        return winners;
+    }
+}

src/main/java/racingcar/RacingResultPrinter.java

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+package racingcar;
+
+import java.util.List;
+
+//출력관련 클래스
+public class RacingResultPrinter {
+    //경주 후 차위치 출력
+    public void printCurrentCarPosition(List<Car> cars) {
+        for (Car car : cars) {
+            System.out.print(car.getName() + " : ");
+            System.out.println("-".repeat(car.getPosition()));
+        }
+        System.out.println();
+    }
+
+    public void printWinners(List<String> winners) {
+        System.out.println("최종 우승자 : " + String.join(", ", winners));
+    }
+}