장재훈 - 자동차 게임 구현

src/main/java/racingcar/Application.java

@@ -1,7 +1,8 @@
 package racingcar;
 
 public class Application {
-    public static void main(String[] args) {
-        // TODO 구현 진행
-    }
+	public static void main(String[] args) {
+		Game game = new Game();
+		game.start();
+	}
 }

src/main/java/racingcar/Car.java

@@ -1,12 +1,32 @@
 package racingcar;
 
+import camp.nextstep.edu.missionutils.Randoms;
+
 public class Car {
-    private final String name;
-    private int position = 0;
+	private final String name;
+	private int position = 0;
+
+	public Car(String name) {
+		this.name = name;
+	}
+
+	public int getPosition() {
+		return this.position;
+	}
+
+	public String getName() {
+		return this.name;
+	}
 
-    public Car(String name) {
-        this.name = name;
-    }
+	public String toString() {
+		String distance = new String(new char[this.getPosition()]).replace("\0", "-");
+		return this.getName() + " : " + distance;
+	}
 
-    // 추가 기능 구현
+	// 추가 기능 구현
+	void move() {
+		if (Randoms.pickNumberInRange(0, 9) >= 4) {
+			this.position += 1;
+		}
+	}
 }

src/main/java/racingcar/Game.java

@@ -0,0 +1,47 @@
+package racingcar;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import utility.InputCheck;
+import utility.Output;
+import utility.Sort;
+
+public class Game {
+	private List<Car> cars = new ArrayList<>();
+
+	private void make() {
+		List<String> names = InputCheck.inputCarNames();
+		for (String name : names) {
+			this.cars.add(new Car(name));
+		}
+	}
+
+	private void run() {
+		int num = InputCheck.inputRound();
+		for (int i = 0; i < num; i++) {
+			this.cars.forEach(Car::move);
+			Output.printProcedure(this.cars);
+		}
+	}
+
+	public List<String> findWinners() {
+		List<String> winner = new ArrayList<>();
+		List<Car> sortedCars = Sort.sortByPosition(this.cars);
+		int winnerScore = sortedCars.get(0).getPosition();
+		for (Car car : sortedCars) {
+			if (car.getPosition() < winnerScore) {
+				break;
+			}
+			winner.add(car.getName());
+		}
+
+		return winner;
+	}
+
+	public void start() {
+		make();
+		run();
+		Output.printResult(findWinners());
+	}
+}

src/main/java/racingcar/manual.md

@@ -0,0 +1,10 @@
+자동차 경주 게임 기능 구현
+======================
+
+🗒️기능 목록
+--------
+### 1. 자동차가 주어진 Random 값에 따라 전진 혹은 멈추는 기능
+### 2. 입력받은 이동 횟수만큼 1의 함수를 실행시키는 기능
+### 3. 입력이 잘못되었을때 에러를 발생시키고 다시 입력받게 하는 기능
+### 4. 입력으로 주어진 이름을 기반으로 Car Object를 생성하는 기능
+### 5. 결과를 출력하는 기능

src/main/java/utility/InputCheck.java

@@ -0,0 +1,49 @@
+package utility;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.regex.Pattern;
+
+import camp.nextstep.edu.missionutils.Console;
+
+public final class InputCheck {
+
+	public static List<String> inputCarNames() {
+		while (true) {
+			System.out.println("경주할 자동차 이름을 입력하세요.(이름은 쉽표(,) 기준으로 구분)");
+			List<String> names = Arrays.asList(Console.readLine().split(","));
+			try {
+				names.forEach(InputCheck::checkName);
+				return names;
+			} catch (IllegalArgumentException e) {
+				System.out.println(e.getMessage());
+			}
+		}
+	}
+
+	private static void checkName(String name) {
+		if (name.trim().length() == 0 || name.trim().length() > 5) {
+			throw new IllegalArgumentException("[ERROR] 이름은 1~5자 사이로 작성하라.");
+		}
+	}
+
+	public static int inputRound() {
+		while (true) {
+			System.out.println("시도할 회수는 몇회인가요?");
+			try {
+				String input = Console.readLine();
+				checkRound(input);
+				return Integer.parseInt(input);
+			} catch (IllegalArgumentException e) {
+				System.out.println(e.getMessage());
+			}
+		}
+	}
+
+	private static void checkRound(String input) {
+		String pattern = "^[0-9]+$";
+		if (!Pattern.matches(pattern, input)) {
+			throw new IllegalArgumentException("[ERROR] 시도 횟수는 자연수인 숫자여야 한다.");
+		}
+	}
+}

src/main/java/utility/Output.java

@@ -0,0 +1,18 @@
+package utility;
+
+import java.util.List;
+
+import racingcar.Car;
+
+public class Output {
+	public static void printProcedure(List<Car> cars) {
+		System.out.println("실행 결과");
+		cars.forEach(car -> System.out.println(car.toString()));
+		System.out.println();
+	}
+
+	public static void printResult(List<String> winners) {
+		System.out.println("최종 우승자" + " : " + String.join(", ", winners));
+	}
+
+}

src/main/java/utility/Sort.java

@@ -0,0 +1,12 @@
+package utility;
+
+import java.util.List;
+
+import racingcar.Car;
+
+public class Sort {
+	public static List<Car> sortByPosition(List<Car> cars) {
+		cars.sort((x, y) -> y.getPosition() - x.getPosition());
+		return cars;
+	}
+}