[LBP] 현정빈 자동차 경주 미션 1,2,3 단계 제출합니다.

src/main/java/RacingGameApplication.java

@@ -0,0 +1,9 @@
+import controller.RacingGameController;
+
+public class RacingGameApplication {
+
+    public static void main(String[] args) {
+        RacingGameController racingGameController = new RacingGameController();
+        racingGameController.gamePlay();
+    }
+}

src/main/java/controller/RacingGameController.java

@@ -0,0 +1,47 @@
+package controller;
+
+import domain.RacingGameService;
+import view.InputView;
+import view.ResultView;
+
+import java.util.List;
+
+public class RacingGameController {
+
+    private final static int NAME_LENGTH = 5;
+    private final RacingGameService racingGame = new RacingGameService();
+    private final InputView inputView = new InputView();
+    private final ResultView resultView = new ResultView(racingGame);
+
+    public void gamePlay() {
+        List<String> carNames = inputView.inputCarNames();
+        validateNameLength(carNames);
+        racingGame.carList(carNames);
+
+        int rounds = inputView.inputRaceRounds();
+        rounds = ensurePositiveRounds(rounds);
+
+        System.out.println("실행결과");
+        racingGame.gameStart(rounds);
+        resultView.printRaceResults();
+    }
+
+    public void validateNameLength(List<String> carsName) {
+        for (String carName : carsName) {
+            validateInput(carName);
+        }
+    }
+
+    public void validateInput(String carName) {
+        if (carName.length() > NAME_LENGTH) {
+            throw new IllegalArgumentException("자동차 이름은 5자 이하여야합니다.");
+        }
+    }
+
+    public int ensurePositiveRounds(int rounds) {
+        if (rounds <= 0) {
+            throw new IllegalArgumentException("시도할 회수는 1이상이어야 합니다.");
+        }
+        return rounds;
+    }
+}

src/main/java/domain/Car.java

@@ -0,0 +1,32 @@
+package domain;
+
+import java.util.Random;
+
+public class Car {
+
+    private static final int MOVE_TRIGGER = 4;
+    private final String name;
+    private int position;
+    private Random randomValue = new Random();
+
+    public Car(String name) {
+        this.name = name;
+        this.position = 0;
+    }
+
+    public void move() {
+        int random = randomValue.nextInt(10);
+        if (random >= MOVE_TRIGGER) {
+            position++;
+        }
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public int getPosition() {
+        return position;
+    }
+
+}

src/main/java/domain/RacingGameService.java

@@ -0,0 +1,57 @@
+package domain;
+
+import java.util.*;
+import java.util.stream.Collectors;
+
+public class RacingGameService {
+
+    private List<Car> cars = new ArrayList<>();
+    private List<Car> winnerCars = new ArrayList<>();
+    private int rounds;
+
+    public void carList(List<String> carNames) {
+        cars = carNames.stream()
+                       .map(Car::new)
+                       .collect(Collectors.toList());
+    }
+
+    public void gameStart(int rounds) {
+        this.rounds = rounds;
+        while (rounds-- > 0) {
+            moveCars();
+            printRoundResults();
+        }
+    }
+
+    public void moveCars() {
+        for (Car car : cars) {
+            car.move();
+        }
+    }
+
+    private void printRoundResults() {
+        for (Car car : cars) {
+            System.out.println(car.getName() + " : " + "-".repeat(car.getPosition()));
+        }
+        System.out.println();
+    }
+
+    public List<Car> getCars() {
+        return cars;
+    }
+
+    public List<Car> getWinner() {
+        int maxPosition = cars.stream()
+                              .mapToInt(Car::getPosition)
+                              .max()
+                              .orElse(0);
+        winnerCars = cars.stream()
+                         .filter(car -> car.getPosition() == maxPosition)
+                         .toList();;
+        return winnerCars;
+    }
+
+    public String findWinnerName() {
+        return winnerCars.stream().map(car -> car.getName()).collect(Collectors.joining(", "));
+    }
+}

src/main/java/view/InputView.java

@@ -0,0 +1,37 @@
+package view;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Scanner;
+
+public class InputView {
+
+    private final Scanner scanner = new Scanner(System.in);
+
+    public List<String> inputCarNames() {
+        System.out.println("경주할 자동차 이름을 입력하세요(이름은 쉼표(,)를 기준으로 구분).");
+        String inputValue = scanner.nextLine();
+        String[] carNamesArray = inputValue.split(",");
+        List<String> carNames = new ArrayList<>();
+        for (String carName : carNamesArray) {
+            carNames.add(carName.trim());
+        }
+        return carNames;
+    }
+
+    public int inputRaceRounds() {
+        System.out.println("시도할 회수는 몇회인가요?");
+        int rounds = promptForValidNumber();
+        System.out.println();
+        return rounds;
+    }
+
+    public int promptForValidNumber() {
+        while (!scanner.hasNextInt()) {
+            System.out.println("잘못된 입력입니다. 숫자를 다시 입력해주세요.");
+            scanner.next();
+        }
+        return scanner.nextInt();
+    }
+
+}

src/main/java/view/ResultView.java

@@ -0,0 +1,20 @@
+package view;
+
+import domain.RacingGameService;
+
+public class ResultView {
+
+    private final RacingGameService racingGame;
+
+    public ResultView(RacingGameService racingGame) {
+        this.racingGame = racingGame;
+    }
+
+    public void printRaceResults() {
+        racingGame.getWinner();
+
+        System.out.print(racingGame.findWinnerName());
+        System.out.println("가 최종 우승했습니다.");
+    }
+
+}