[조재민_BackEnd] 과제 제출합니다.

src/main/java/racingcar/Application.java

@@ -2,6 +2,13 @@
 
 public class Application {
     public static void main(String[] args) {
-        // TODO: 프로그램 구현
+
+        Car car = new Car();
+        String[] carNames = car.getCarNames();
+        int rounds = car.getRounds();
+
+        Racing racing = new Racing(carNames, rounds);
+        racing.startRace();
+
     }
-}
+}

src/main/java/racingcar/Car.java

@@ -0,0 +1,35 @@
+package racingcar;
+import camp.nextstep.edu.missionutils.Console;
+
+public class Car {
+    private final int MAX_NAME = 5;
+
+    public String[] getCarNames() {
+        // 이름 입력
+        System.out.println("경주할 자동차 이름을 입력하세요. (이름은 쉼표(,) 기준으로 구분)");
+        String carString = Console.readLine();
+        String[] carNames = carString.split(",");
+
+        // 이름 예외 처리
+        for (String carName : carNames) {
+            if (carName.length() > MAX_NAME) {
+                throw new IllegalArgumentException("[ERROR] 이름은 5자 이하만 가능합니다.");
+            }
+        }
+        return carNames;
+    }
+
+    public int getRounds() {
+        // 시도 횟수 입력
+        System.out.println("시도할 횟수를 입력하세요.");
+        String input = Console.readLine();
+
+        // 시도 횟수 예외 처리
+        try {
+            int rounds = Integer.parseInt(input);
+            return rounds;
+        } catch (NumberFormatException e) {
+            throw new IllegalArgumentException("[ERROR] 시도 횟수는 숫자여야 합니다.");
+        }
+    }
+}

src/main/java/racingcar/Racing.java

@@ -0,0 +1,68 @@
+package racingcar;
+import camp.nextstep.edu.missionutils.Randoms;
+import java.util.ArrayList;
+import java.util.List;
+
+public class Racing {
+    private final String[] carNames;
+    private final int rounds;
+    private final int[] positions;
+
+    public Racing(String[] carNames, int rounds) {
+        this.carNames = carNames;
+        this.rounds = rounds;
+        this.positions = new int[carNames.length];
+    }
+
+    // 레이스 시작
+    public void startRace() {
+        System.out.println("\n실행 결과");
+        for (int i = 0; i < rounds; i++) {
+            playRound();
+            printResult();
+        }
+        printWinners();
+    }
+
+    // 레이스 진행
+    private void playRound() {
+        final int MOVE_NUMBER = 4;
+        final int START_NUMBER = 0;
+        final int END_NUMBER = 9;
+
+        for (int i = 0; i < carNames.length; i++) {
+            int randomNumber = Randoms.pickNumberInRange(START_NUMBER, END_NUMBER);
+            if (randomNumber >= MOVE_NUMBER) {
+                positions[i]++;
+            }
+        }
+    }
+
+    // 결과 출력
+    private void printResult() {
+        for (int i = 0; i < carNames.length; i++) {
+            System.out.println(carNames[i] + " : " + "-".repeat(positions[i]));
+        }
+        System.out.println();
+    }
+
+    // 최종 승리자
+    private void printWinners() {
+        int maxPosition = 0;
+        for (int nowPosition : positions) {
+            if (nowPosition > maxPosition) {
+                maxPosition = nowPosition;
+            }
+        }
+
+        List<String> winners = new ArrayList<>();
+        for (int i = 0; i < carNames.length; i++) {
+            if (positions[i] == maxPosition) {
+                winners.add(carNames[i]);
+            }
+        }
+
+        String winnerString = String.join(", ", winners);
+        System.out.println("최종 우승자 : " + winnerString);
+    }
+}