[LBP] 송하은 자동차 경주 미션 1,2,3단계 제출

src/main/java/Car.java

@@ -0,0 +1,25 @@
+public class Car {
+
+    private final String name;
+    private int position;
+    private static final int MOVE_TRIGGER = 4;
+
+    public Car(String name) {
+        this.name = name;
+        this.position = 0;
+    }
+
+    public void move(int value) {
+        if (value >= MOVE_TRIGGER) {
+            position++;
+        }
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public int getPosition() {
+        return position;
+    }
+}

src/main/java/InputView.java

@@ -0,0 +1,43 @@
+import java.util.Scanner;
+
+public class InputView {
+
+    private static final int MAX_NAME_LENGTH = 5;
+    private final Scanner scanner = new Scanner(System.in);
+
+    private String getUserInput() {
+        System.out.println("경주할 자동차 이름을 입력하세요(이름은 쉼표(,)를 기준으로 구분).");
+        return scanner.nextLine();
+    }
+
+    private String[] splitCarNames(String inputValue) {
+        return inputValue.split(",");
+    }
+
+    public String[] inputCarNames() throws Exception {
+        String inputValue = getUserInput();
+        String[] carsName = splitCarNames(inputValue);
+
+        validateName(carsName);
+        return carsName;
+    }
+
+    private void validateName(String[] carsName) throws Exception {
+        for (String carName : carsName) {
+            validateInput(carName);
+        }
+    }
+
+    private void validateInput(String carName) throws Exception {
+        if (carName.length() > MAX_NAME_LENGTH) {
+            throw new Exception("자동차 이름은 "+MAX_NAME_LENGTH+ "자 이하여야합니다.");
+        }
+    }
+
+    public int inputRaceRounds() {
+        System.out.println("시도할 회수는 몇회인가요?");
+        int rounds = scanner.nextInt();
+        System.out.println();
+        return rounds;
+    }
+}

src/main/java/RacingGame.java

@@ -0,0 +1,49 @@
+import java.util.*;
+import java.util.stream.Collectors;
+
+class RacingGame {
+
+    private List<Car> cars;
+
+    public RacingGame(List<Car> cars) {
+        this.cars = new ArrayList<>(cars);
+    }
+
+    public void gameStart(int rounds) {
+        while (rounds-- > 0) {
+            moveCars();
+            System.out.println();
+        }
+    }
+
+    private void moveCars() {
+        Random random = new Random();
+        for (Car car : cars) {
+            System.out.print(car.getName() + " : ");
+            int randomValue = random.nextInt(10);
+            car.move(randomValue);
+            System.out.print("-".repeat(car.getPosition()));
+            System.out.println();
+        }
+    }
+
+    public List<Car> getWinner() {
+        int maxPosition = getMaxPosition();
+        return cars.stream()
+                .filter(car -> car.getPosition() == maxPosition)
+                .collect(Collectors.toUnmodifiableList());
+    }
+
+    private int getMaxPosition() {
+        return cars.stream()
+                .mapToInt(Car::getPosition)
+                .max()
+                .orElse(0);
+    }
+
+    public String findWinnerName(List<Car> winnerCars) {
+        return winnerCars.stream()
+                .map(car -> car.getName())
+                .collect(Collectors.joining(", "));
+    }
+}

src/main/java/RacingGameApplication.java

@@ -0,0 +1,37 @@
+import java.util.ArrayList;
+import java.util.List;
+
+public class RacingGameApplication {
+
+    public static void main(String[] args) throws Exception {
+
+        InputView inputView = new InputView();
+
+        // 1. 자동차 이름 입력 및 검증
+        String[] carsName = inputView.inputCarNames();
+        List<Car> cars = createCars(carsName);
+
+        RacingGame racingGame = new RacingGame(cars);
+        ResultView resultView = new ResultView();
+
+        // 2. 시도할 횟수 입력
+        int rounds = inputView.inputRaceRounds();
+
+        // 3. 게임 실행
+        racingGame.gameStart(rounds);
+
+        // 4. 결과 출력
+        List<Car> winnerCars = racingGame.getWinner();
+        String winnerNames = racingGame.findWinnerName(winnerCars);
+
+        resultView.printResult(winnerCars, winnerNames);
+    }
+
+    public static List<Car> createCars(String[] carNames) {
+        List<Car> cars = new ArrayList<>();
+        for (String name : carNames) {
+            cars.add(new Car(name.trim()));
+        }
+        return cars;
+    }
+}

src/main/java/ResultView.java

@@ -0,0 +1,9 @@
+import java.util.List;
+
+public class ResultView {
+
+    public void printResult(List<Car> winnerCars, String winnerNames) {
+        System.out.println("실행 결과");
+        System.out.println(winnerNames + "가 최종 우승했습니다.");
+    }
+}