From 3f4c15e1367e3c05ce6f641ab941cb3d3d32fa40 Mon Sep 17 00:00:00 2001
From: songzio <zioziozzang@naver.com>
Date: Wed, 25 Mar 2026 14:41:20 +0900
Subject: [PATCH 01/10] =?UTF-8?q?=EA=B8=B0=EB=8A=A5=20=ED=8C=8C=EC=9D=BC?=
 =?UTF-8?q?=20=EC=B6=94=EA=B0=80?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/main/java/racingcar/Application.java    | 2 +-
 src/main/java/racingcar/Car.java            | 4 ++++
 src/main/java/racingcar/GameController.java | 4 ++++
 src/main/java/racingcar/InputView.java      | 4 ++++
 src/main/java/racingcar/OutputView.java     | 4 ++++
 src/main/java/racingcar/RacingGame.java     | 4 ++++
 6 files changed, 21 insertions(+), 1 deletion(-)
 create mode 100644 src/main/java/racingcar/Car.java
 create mode 100644 src/main/java/racingcar/GameController.java
 create mode 100644 src/main/java/racingcar/InputView.java
 create mode 100644 src/main/java/racingcar/OutputView.java
 create mode 100644 src/main/java/racingcar/RacingGame.java

diff --git a/src/main/java/racingcar/Application.java b/src/main/java/racingcar/Application.java
index a17a52e..c2b9df5 100644
--- a/src/main/java/racingcar/Application.java
+++ b/src/main/java/racingcar/Application.java
@@ -2,6 +2,6 @@
 
 public class Application {
     public static void main(String[] args) {
-        // TODO: 프로그램 구현
+
     }
 }
diff --git a/src/main/java/racingcar/Car.java b/src/main/java/racingcar/Car.java
new file mode 100644
index 0000000..246c8e5
--- /dev/null
+++ b/src/main/java/racingcar/Car.java
@@ -0,0 +1,4 @@
+package racingcar;
+
+public class Car {
+}
diff --git a/src/main/java/racingcar/GameController.java b/src/main/java/racingcar/GameController.java
new file mode 100644
index 0000000..08cacde
--- /dev/null
+++ b/src/main/java/racingcar/GameController.java
@@ -0,0 +1,4 @@
+package racingcar;
+
+public class GameController {
+}
diff --git a/src/main/java/racingcar/InputView.java b/src/main/java/racingcar/InputView.java
new file mode 100644
index 0000000..d4e73ad
--- /dev/null
+++ b/src/main/java/racingcar/InputView.java
@@ -0,0 +1,4 @@
+package racingcar;
+
+public class InputView {
+}
diff --git a/src/main/java/racingcar/OutputView.java b/src/main/java/racingcar/OutputView.java
new file mode 100644
index 0000000..fab9c49
--- /dev/null
+++ b/src/main/java/racingcar/OutputView.java
@@ -0,0 +1,4 @@
+package racingcar;
+
+public class OutputView {
+}
diff --git a/src/main/java/racingcar/RacingGame.java b/src/main/java/racingcar/RacingGame.java
new file mode 100644
index 0000000..8c66d3d
--- /dev/null
+++ b/src/main/java/racingcar/RacingGame.java
@@ -0,0 +1,4 @@
+package racingcar;
+
+public class RacingGame {
+}

From 6e1def28e1ca378673858253103203af0afa0eaa Mon Sep 17 00:00:00 2001
From: songzio <zioziozzang@naver.com>
Date: Wed, 25 Mar 2026 15:02:18 +0900
Subject: [PATCH 02/10] =?UTF-8?q?=EC=9E=90=EB=8F=99=EC=B0=A8=20=ED=81=B4?=
 =?UTF-8?q?=EB=9E=98=EC=8A=A4=20=EC=99=84=EC=84=B1?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/main/java/racingcar/Car.java | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/main/java/racingcar/Car.java b/src/main/java/racingcar/Car.java
index 246c8e5..c16b9cc 100644
--- a/src/main/java/racingcar/Car.java
+++ b/src/main/java/racingcar/Car.java
@@ -1,4 +1,14 @@
 package racingcar;
 
 public class Car {
+
+    public String carName;
+    public int count;
+
+    public Car() {}
+
+    public Car(String carName) {    // 매개변수를 가진 생성자
+        this.carName = carName;
+        this.count = 0;
+    }
 }

From 6068cd17e8505449d062e9d5ef77e3937cc51274 Mon Sep 17 00:00:00 2001
From: songzio <zioziozzang@naver.com>
Date: Wed, 25 Mar 2026 15:31:40 +0900
Subject: [PATCH 03/10] =?UTF-8?q?=EC=9E=90=EB=8F=99=EC=B0=A8=20=EC=9D=B4?=
 =?UTF-8?q?=EB=A6=84=20=EC=9E=85=EB=A0=A5=20=EB=B0=9B=EA=B8=B0=20=EC=99=84?=
 =?UTF-8?q?=EB=A3=8C?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/main/java/racingcar/InputView.java | 32 ++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/src/main/java/racingcar/InputView.java b/src/main/java/racingcar/InputView.java
index d4e73ad..d762dd7 100644
--- a/src/main/java/racingcar/InputView.java
+++ b/src/main/java/racingcar/InputView.java
@@ -1,4 +1,36 @@
 package racingcar;
 
+import camp.nextstep.edu.missionutils.Console;
+
+import java.util.ArrayList;
+import java.util.List;
+
 public class InputView {
+
+    public List<Car> createCars() {
+        System.out.println("경주할 자동차 이름을 입력하세요.(이름은 쉼표(,) 기준으로 구분)");
+
+        String input = Console.readLine();
+        String[] carNames = input.split(",");
+
+        List<String> existNames = new ArrayList<>(); //차 이름 중복 예외처리 하려고 만든 리스트
+
+        List<Car> carList = new ArrayList<>();
+
+        for (String name : carNames) {
+
+            if (name.isEmpty() || name.contains(" ")) {
+                throw new IllegalArgumentException("빈값, 공백 오류");
+            }
+
+            if (existNames.contains(name)) {
+                throw new IllegalArgumentException("중복된 차 있음");
+            }
+            existNames.add(name);
+
+            Car car = new Car(name);
+            carList.add(car);
+        }
+        return carList;
+    }
 }

From c1e5565eb0ac619f5ac6a4cc2496c53d2c2dd2d2 Mon Sep 17 00:00:00 2001
From: songzio <zioziozzang@naver.com>
Date: Wed, 25 Mar 2026 15:57:24 +0900
Subject: [PATCH 04/10] =?UTF-8?q?=EC=B0=A8=EB=9F=89=20=EC=9D=B4=EB=8F=99?=
 =?UTF-8?q?=20=ED=9A=9F=EC=88=98=20=EC=9E=85=EB=A0=A5=20=EA=B8=B0=EB=8A=A5?=
 =?UTF-8?q?=20=EC=99=84=EB=A3=8C?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/main/java/racingcar/InputView.java | 28 ++++++++++++++++++++++++--
 1 file changed, 26 insertions(+), 2 deletions(-)

diff --git a/src/main/java/racingcar/InputView.java b/src/main/java/racingcar/InputView.java
index d762dd7..a1b7c72 100644
--- a/src/main/java/racingcar/InputView.java
+++ b/src/main/java/racingcar/InputView.java
@@ -10,8 +10,8 @@ public class InputView {
     public List<Car> createCars() {
         System.out.println("경주할 자동차 이름을 입력하세요.(이름은 쉼표(,) 기준으로 구분)");
 
-        String input = Console.readLine();
-        String[] carNames = input.split(",");
+        String nameInput = Console.readLine();
+        String[] carNames = nameInput.split(",");
 
         List<String> existNames = new ArrayList<>(); //차 이름 중복 예외처리 하려고 만든 리스트
 
@@ -19,6 +19,10 @@ public List<Car> createCars() {
 
         for (String name : carNames) {
 
+            if (name.length() > 5) {
+                throw new IllegalArgumentException("차 이름 5글자보다 클 수 없음");
+            }
+
             if (name.isEmpty() || name.contains(" ")) {
                 throw new IllegalArgumentException("빈값, 공백 오류");
             }
@@ -33,4 +37,24 @@ public List<Car> createCars() {
         }
         return carList;
     }
+
+    public int getCount() {
+
+        System.out.println("시도할 회수는 몇회인가요?");
+        String countInput = Console.readLine();
+
+        int tryCount;
+
+        try {
+            tryCount = Integer.parseInt(countInput);
+        } catch (NumberFormatException e) {
+            throw new IllegalArgumentException("시도 횟수는 숫자여야함");
+        }
+
+        if (tryCount <= 0) {
+            throw new IllegalArgumentException("0보다 작은 수 안됨");
+        }
+
+        return tryCount;
+    }
 }

From 85a44227aed3a9f9d527e3944b5e108cc34f8db9 Mon Sep 17 00:00:00 2001
From: songzio <zioziozzang@naver.com>
Date: Wed, 25 Mar 2026 16:07:17 +0900
Subject: [PATCH 05/10] =?UTF-8?q?=EC=9E=90=EB=8F=99=EC=B0=A8=20=ED=81=B4?=
 =?UTF-8?q?=EB=9E=98=EC=8A=A4=20=EA=B0=9C=ED=84=B0=20=EC=84=B8=ED=84=B0=20?=
 =?UTF-8?q?=ED=95=A8=EC=88=98=20=EC=B6=94=EA=B0=80?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/main/java/racingcar/Car.java | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/src/main/java/racingcar/Car.java b/src/main/java/racingcar/Car.java
index c16b9cc..334bb70 100644
--- a/src/main/java/racingcar/Car.java
+++ b/src/main/java/racingcar/Car.java
@@ -11,4 +11,20 @@ public Car(String carName) {    // 매개변수를 가진 생성자
         this.carName = carName;
         this.count = 0;
     }
+
+    public String getCarName() {
+        return carName;
+    }
+
+    public void setCarName(String carName) {
+        this.carName = carName;
+    }
+
+    public int getCount() {
+        return count;
+    }
+
+    public void setCount(int count) {
+        this.count = count;
+    }
 }

From 7871e5ab6fc72b6c883a509b04616482adc8b003 Mon Sep 17 00:00:00 2001
From: songzio <zioziozzang@naver.com>
Date: Wed, 25 Mar 2026 16:41:31 +0900
Subject: [PATCH 06/10] =?UTF-8?q?=EA=B2=8C=EC=9E=84=20=EC=8B=A4=ED=96=89?=
 =?UTF-8?q?=20=EA=B8=B0=EB=8A=A5=20=EC=99=84=EB=A3=8C?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/main/java/racingcar/Car.java            |  6 ++++
 src/main/java/racingcar/GameController.java |  4 ---
 src/main/java/racingcar/OutputView.java     |  4 ---
 src/main/java/racingcar/RacingGame.java     | 33 +++++++++++++++++++++
 4 files changed, 39 insertions(+), 8 deletions(-)
 delete mode 100644 src/main/java/racingcar/GameController.java
 delete mode 100644 src/main/java/racingcar/OutputView.java

diff --git a/src/main/java/racingcar/Car.java b/src/main/java/racingcar/Car.java
index 334bb70..2d6fdf0 100644
--- a/src/main/java/racingcar/Car.java
+++ b/src/main/java/racingcar/Car.java
@@ -12,6 +12,12 @@ public Car(String carName) {    // 매개변수를 가진 생성자
         this.count = 0;
     }
 
+    public void upCount(int number) {
+        if (number >= 4) {
+            this.count ++;
+        }ㅎ
+    }
+
     public String getCarName() {
         return carName;
     }
diff --git a/src/main/java/racingcar/GameController.java b/src/main/java/racingcar/GameController.java
deleted file mode 100644
index 08cacde..0000000
--- a/src/main/java/racingcar/GameController.java
+++ /dev/null
@@ -1,4 +0,0 @@
-package racingcar;
-
-public class GameController {
-}
diff --git a/src/main/java/racingcar/OutputView.java b/src/main/java/racingcar/OutputView.java
deleted file mode 100644
index fab9c49..0000000
--- a/src/main/java/racingcar/OutputView.java
+++ /dev/null
@@ -1,4 +0,0 @@
-package racingcar;
-
-public class OutputView {
-}
diff --git a/src/main/java/racingcar/RacingGame.java b/src/main/java/racingcar/RacingGame.java
index 8c66d3d..7b79a13 100644
--- a/src/main/java/racingcar/RacingGame.java
+++ b/src/main/java/racingcar/RacingGame.java
@@ -1,4 +1,37 @@
 package racingcar;
 
+import camp.nextstep.edu.missionutils.Randoms;
+
+import java.util.List;
+
 public class RacingGame {
+
+    InputView inputView = new InputView();
+
+    public List<Car> start(List<Car> list) {
+
+        List<Car> carList = inputView.createCars();
+        int count = inputView.getCount();
+
+        for (int i = 0; i < count; i ++) {
+            for (Car car : carList) {
+                int randomNumber = Randoms.pickNumberInRange(0,9);
+                car.upCount(randomNumber);
+            }
+        }
+
+        for (Car car : carList) {
+            int carCount = car.getCount();
+            String carName = car.getCarName();
+
+            System.out.print(carName + " : ");
+
+            for (int j = 0; j < carCount; j++) {
+                System.out.print("-");
+            }
+
+            System.out.println();
+        }
+        return carList;
+    }
 }

From 4b13715723b7e5687e3f3fa574cd031d065678d5 Mon Sep 17 00:00:00 2001
From: songzio <zioziozzang@naver.com>
Date: Wed, 25 Mar 2026 16:43:42 +0900
Subject: [PATCH 07/10] =?UTF-8?q?=EC=9E=90=EB=8F=99=EC=9C=BC=EB=A1=9C=20co?=
 =?UTF-8?q?unnt=20=EC=98=AC=EB=A6=AC=EB=8A=94=20=ED=95=A8=EC=88=98=20?=
 =?UTF-8?q?=EC=B6=94=EA=B0=80?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/main/java/racingcar/Car.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/main/java/racingcar/Car.java b/src/main/java/racingcar/Car.java
index 2d6fdf0..3141153 100644
--- a/src/main/java/racingcar/Car.java
+++ b/src/main/java/racingcar/Car.java
@@ -15,7 +15,7 @@ public Car(String carName) {    // 매개변수를 가진 생성자
     public void upCount(int number) {
         if (number >= 4) {
             this.count ++;
-        }ㅎ
+        }
     }
 
     public String getCarName() {

From 7ac0c1213582290f02dd02157f39dab5551cf82e Mon Sep 17 00:00:00 2001
From: songzio <zioziozzang@naver.com>
Date: Wed, 25 Mar 2026 18:20:07 +0900
Subject: [PATCH 08/10] =?UTF-8?q?=EA=B2=B0=EA=B3=BC=20=EC=B6=9C=EB=A0=A5?=
 =?UTF-8?q?=20=EA=B8=B0=EB=8A=A5=20=EC=99=84=EB=A3=8C?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/main/java/racingcar/RacingResult.java | 30 +++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 src/main/java/racingcar/RacingResult.java

diff --git a/src/main/java/racingcar/RacingResult.java b/src/main/java/racingcar/RacingResult.java
new file mode 100644
index 0000000..5dcbd9b
--- /dev/null
+++ b/src/main/java/racingcar/RacingResult.java
@@ -0,0 +1,30 @@
+package racingcar;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class RacingResult {
+
+    RacingGame racingGame = new RacingGame();
+
+    public void result(List<Car> carList) {
+        ArrayList<String> winnerList = new ArrayList<>();
+        int maxNum = 0;
+
+        for (Car car : carList) {
+            if (car.getCount() >= maxNum) {
+                maxNum = car.getCount();
+            }
+        }
+
+        for(Car car: carList) {
+            if (car.getCount() == maxNum ) {
+                winnerList.add(car.getCarName());
+            }
+        }
+
+        String winnerNames = String.join(", ", winnerList);
+        System.out.print("최종 우승자 : ");
+        System.out.print(winnerNames);
+    }
+}

From c30b887472b092b2e691737f0c6e9473b1400b06 Mon Sep 17 00:00:00 2001
From: songzio <zioziozzang@naver.com>
Date: Wed, 25 Mar 2026 18:34:41 +0900
Subject: [PATCH 09/10] =?UTF-8?q?RacingGame=EC=95=88=EC=97=90=20for?=
 =?UTF-8?q?=EC=9C=84=EC=B9=98=20=EB=B3=80=EA=B2=BD,=20application=EC=9E=91?=
 =?UTF-8?q?=EC=84=B1?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/main/java/racingcar/Application.java | 13 ++++++++++++-
 src/main/java/racingcar/RacingGame.java  | 19 +++++++++++--------
 2 files changed, 23 insertions(+), 9 deletions(-)

diff --git a/src/main/java/racingcar/Application.java b/src/main/java/racingcar/Application.java
index c2b9df5..65445c5 100644
--- a/src/main/java/racingcar/Application.java
+++ b/src/main/java/racingcar/Application.java
@@ -1,7 +1,18 @@
 package racingcar;
 
+import java.util.List;
+
 public class Application {
     public static void main(String[] args) {
+        // 1. 게임 엔진 객체 생성
+        RacingGame racingGame = new RacingGame();
+
+        // 2. 게임 실행 및 최종 자동차 리스트 받아오기
+        // RacingGame.java의 start 메서드는 List<Car>를 반환하도록 설계하셨습니다.
+        List<Car> carList = racingGame.start(null);
 
+        // 3. 우승자 판별 및 결과 출력
+        RacingResult racingResult = new RacingResult();
+        racingResult.result(carList);
     }
-}
+}
\ No newline at end of file
diff --git a/src/main/java/racingcar/RacingGame.java b/src/main/java/racingcar/RacingGame.java
index 7b79a13..7f5a270 100644
--- a/src/main/java/racingcar/RacingGame.java
+++ b/src/main/java/racingcar/RacingGame.java
@@ -13,23 +13,26 @@ public List<Car> start(List<Car> list) {
         List<Car> carList = inputView.createCars();
         int count = inputView.getCount();
 
+        System.out.println("실행결과");
+
         for (int i = 0; i < count; i ++) {
             for (Car car : carList) {
                 int randomNumber = Randoms.pickNumberInRange(0,9);
                 car.upCount(randomNumber);
             }
-        }
 
-        for (Car car : carList) {
-            int carCount = car.getCount();
-            String carName = car.getCarName();
+            for (Car car : carList) {
+                int carCount = car.getCount();
+                String carName = car.getCarName();
 
-            System.out.print(carName + " : ");
+                System.out.print(carName + " : ");
 
-            for (int j = 0; j < carCount; j++) {
-                System.out.print("-");
-            }
+                for (int j = 0; j < carCount; j++) {
+                    System.out.print("-");
+                }
 
+                System.out.println();
+            }
             System.out.println();
         }
         return carList;

From 3777d640892f716ad56eb0051f7afd09c0604f8d Mon Sep 17 00:00:00 2001
From: songzio <zioziozzang@naver.com>
Date: Tue, 7 Apr 2026 15:05:45 +0900
Subject: [PATCH 10/10] =?UTF-8?q?=EC=A0=84=EC=B2=B4=20=EB=A6=AC=ED=8C=A9?=
 =?UTF-8?q?=ED=86=A0=EB=A7=81?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 bin/main/racingcar/Application.class      | Bin 0 -> 1039 bytes
 bin/main/racingcar/Car.class              | Bin 0 -> 705 bytes
 bin/main/racingcar/InputView.class        | Bin 0 -> 2379 bytes
 bin/main/racingcar/OutputView.class       | Bin 0 -> 1875 bytes
 bin/main/racingcar/RacingGame.class       | Bin 0 -> 1540 bytes
 bin/main/racingcar/RacingResult.class     | Bin 0 -> 1579 bytes
 bin/test/racingcar/ApplicationTest.class  | Bin 0 -> 7547 bytes
 bin/test/study/StringTest.class           | Bin 0 -> 3433 bytes
 src/main/java/racingcar/Application.java  |  14 ++++----
 src/main/java/racingcar/Car.java          |  31 +++++-------------
 src/main/java/racingcar/InputView.java    |   2 +-
 src/main/java/racingcar/OutputView.java   |  26 +++++++++++++++
 src/main/java/racingcar/RacingGame.java   |  37 +++++++++-------------
 src/main/java/racingcar/RacingResult.java |   5 +--
 14 files changed, 61 insertions(+), 54 deletions(-)
 create mode 100644 bin/main/racingcar/Application.class
 create mode 100644 bin/main/racingcar/Car.class
 create mode 100644 bin/main/racingcar/InputView.class
 create mode 100644 bin/main/racingcar/OutputView.class
 create mode 100644 bin/main/racingcar/RacingGame.class
 create mode 100644 bin/main/racingcar/RacingResult.class
 create mode 100644 bin/test/racingcar/ApplicationTest.class
 create mode 100644 bin/test/study/StringTest.class
 create mode 100644 src/main/java/racingcar/OutputView.java

diff --git a/bin/main/racingcar/Application.class b/bin/main/racingcar/Application.class
new file mode 100644
index 0000000000000000000000000000000000000000..7b4d54b492dad103629ab0169b26fe68eda11b39
GIT binary patch
literal 1039
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diff --git a/bin/main/racingcar/Car.class b/bin/main/racingcar/Car.class
new file mode 100644
index 0000000000000000000000000000000000000000..5d3edd7181e97e1c10f0778feae599a93dd01f86
GIT binary patch
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diff --git a/bin/main/racingcar/InputView.class b/bin/main/racingcar/InputView.class
new file mode 100644
index 0000000000000000000000000000000000000000..21eca3c4b130f912e7f2c2382f99566883e4a5de
GIT binary patch
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diff --git a/bin/main/racingcar/OutputView.class b/bin/main/racingcar/OutputView.class
new file mode 100644
index 0000000000000000000000000000000000000000..2f733d1b01ca6895327f9b7a56c1ee8dd7314a44
GIT binary patch
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diff --git a/bin/main/racingcar/RacingGame.class b/bin/main/racingcar/RacingGame.class
new file mode 100644
index 0000000000000000000000000000000000000000..ca14106e8896bd4ae2d3ad8dc9a963f8b6b4f7b5
GIT binary patch
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diff --git a/bin/main/racingcar/RacingResult.class b/bin/main/racingcar/RacingResult.class
new file mode 100644
index 0000000000000000000000000000000000000000..95f72b0564a3bb702600c884d6cc17f7717f1076
GIT binary patch
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diff --git a/bin/test/racingcar/ApplicationTest.class b/bin/test/racingcar/ApplicationTest.class
new file mode 100644
index 0000000000000000000000000000000000000000..5951e3dd81ca47fd44a92bfcecc0dc0704d8ab70
GIT binary patch
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HcmV?d00001

diff --git a/bin/test/study/StringTest.class b/bin/test/study/StringTest.class
new file mode 100644
index 0000000000000000000000000000000000000000..ecbf42ba96d3677c03fd3efdf8f3291e710ffd15
GIT binary patch
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HcmV?d00001

diff --git a/src/main/java/racingcar/Application.java b/src/main/java/racingcar/Application.java
index 65445c5..55eadce 100644
--- a/src/main/java/racingcar/Application.java
+++ b/src/main/java/racingcar/Application.java
@@ -4,15 +4,17 @@
 
 public class Application {
     public static void main(String[] args) {
-        // 1. 게임 엔진 객체 생성
-        RacingGame racingGame = new RacingGame();
+        // 1. 입출력 뷰 객체 생성
+        InputView inputView = new InputView();
+        OutputView outputView = new OutputView();
 
-        // 2. 게임 실행 및 최종 자동차 리스트 받아오기
-        // RacingGame.java의 start 메서드는 List<Car>를 반환하도록 설계하셨습니다.
-        List<Car> carList = racingGame.start(null);
+        // 2. 게임 엔진에 뷰 객체 주입 및 실행 (null 파라미터 제거)
+        RacingGame racingGame = new RacingGame(inputView, outputView);
+        List<Car> carList = racingGame.start();
 
         // 3. 우승자 판별 및 결과 출력
+        // (RacingResult 내부에서도 outputView를 사용하도록 수정하는 것을 권장함)
         RacingResult racingResult = new RacingResult();
-        racingResult.result(carList);
+        racingResult.result(carList); 
     }
 }
\ No newline at end of file
diff --git a/src/main/java/racingcar/Car.java b/src/main/java/racingcar/Car.java
index 3141153..be2559d 100644
--- a/src/main/java/racingcar/Car.java
+++ b/src/main/java/racingcar/Car.java
@@ -1,36 +1,21 @@
 package racingcar;
 
 public class Car {
+    // public에서 private으로 변경하여 외부 조작 방지
+    private String carName;
+    private int count;
 
-    public String carName;
-    public int count;
-
-    public Car() {}
-
-    public Car(String carName) {    // 매개변수를 가진 생성자
+    public Car(String carName) {
         this.carName = carName;
         this.count = 0;
     }
 
     public void upCount(int number) {
         if (number >= 4) {
-            this.count ++;
+            this.count++;
         }
     }
 
-    public String getCarName() {
-        return carName;
-    }
-
-    public void setCarName(String carName) {
-        this.carName = carName;
-    }
-
-    public int getCount() {
-        return count;
-    }
-
-    public void setCount(int count) {
-        this.count = count;
-    }
-}
+    public String getCarName() { return carName; }
+    public int getCount() { return count; }
+}
\ No newline at end of file
diff --git a/src/main/java/racingcar/InputView.java b/src/main/java/racingcar/InputView.java
index a1b7c72..4dd2990 100644
--- a/src/main/java/racingcar/InputView.java
+++ b/src/main/java/racingcar/InputView.java
@@ -57,4 +57,4 @@ public int getCount() {
 
         return tryCount;
     }
-}
+}
\ No newline at end of file
diff --git a/src/main/java/racingcar/OutputView.java b/src/main/java/racingcar/OutputView.java
new file mode 100644
index 0000000..b07f1bb
--- /dev/null
+++ b/src/main/java/racingcar/OutputView.java
@@ -0,0 +1,26 @@
+package racingcar;
+
+import java.util.List;
+
+public class OutputView {
+    
+    public void printRunResultHeader() {
+        System.out.println("\n실행 결과");
+    }
+
+    public void printCarPosition(Car car) {
+        System.out.print(car.getCarName() + " : ");
+        for (int i = 0; i < car.getCount(); i++) {
+            System.out.print("-");
+        }
+        System.out.println();
+    }
+
+    public void printEmptyLine() {
+        System.out.println();
+    }
+
+    public void printWinners(List<String> winnerNames) {
+        System.out.print("최종 우승자 : " + String.join(", ", winnerNames));
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/racingcar/RacingGame.java b/src/main/java/racingcar/RacingGame.java
index 7f5a270..8fc1f39 100644
--- a/src/main/java/racingcar/RacingGame.java
+++ b/src/main/java/racingcar/RacingGame.java
@@ -1,40 +1,33 @@
 package racingcar;
 
 import camp.nextstep.edu.missionutils.Randoms;
-
 import java.util.List;
 
 public class RacingGame {
+    private final InputView inputView;
+    private final OutputView outputView;
 
-    InputView inputView = new InputView();
-
-    public List<Car> start(List<Car> list) {
+    // 생성자를 통한 의존성 주입
+    public RacingGame(InputView inputView, OutputView outputView) {
+        this.inputView = inputView;
+        this.outputView = outputView;
+    }
 
+    // 불필요한 List<Car> 매개변수 제거
+    public List<Car> start() {
         List<Car> carList = inputView.createCars();
         int count = inputView.getCount();
 
-        System.out.println("실행결과");
+        outputView.printRunResultHeader();
 
-        for (int i = 0; i < count; i ++) {
+        for (int i = 0; i < count; i++) {
             for (Car car : carList) {
-                int randomNumber = Randoms.pickNumberInRange(0,9);
+                int randomNumber = Randoms.pickNumberInRange(0, 9);
                 car.upCount(randomNumber);
+                outputView.printCarPosition(car); // 출력 위임
             }
-
-            for (Car car : carList) {
-                int carCount = car.getCount();
-                String carName = car.getCarName();
-
-                System.out.print(carName + " : ");
-
-                for (int j = 0; j < carCount; j++) {
-                    System.out.print("-");
-                }
-
-                System.out.println();
-            }
-            System.out.println();
+            outputView.printEmptyLine();
         }
         return carList;
     }
-}
+}
\ No newline at end of file
diff --git a/src/main/java/racingcar/RacingResult.java b/src/main/java/racingcar/RacingResult.java
index 5dcbd9b..87cddfd 100644
--- a/src/main/java/racingcar/RacingResult.java
+++ b/src/main/java/racingcar/RacingResult.java
@@ -5,7 +5,8 @@
 
 public class RacingResult {
 
-    RacingGame racingGame = new RacingGame();
+    // 문제의 원인! 이 줄을 과감하게 삭제합니다.
+    // RacingGame racingGame = new RacingGame(); 
 
     public void result(List<Car> carList) {
         ArrayList<String> winnerList = new ArrayList<>();
@@ -27,4 +28,4 @@ public void result(List<Car> carList) {
         System.out.print("최종 우승자 : ");
         System.out.print(winnerNames);
     }
-}
+}
\ No newline at end of file