[박준서_BackEnd]과제 제출합니다.

src/main/java/racingcar/Application.java

@@ -1,7 +1,104 @@
 package racingcar;
+import java.util.Scanner;
+import java.util.List;
+import java.util.ArrayList;
+import java.util.Random;
+
+class Car{
+    private final String name;
+    private int position = 0;
+    //차 이름
+    public Car(String name){
+        if (name == null || name.trim().isEmpty() || name.length() >5){
+            throw new IllegalArgumentException("자동차 이름은 1자 이상 5자 이하만 가능합니다.");
+        }
+        this.name = name.trim();
+    }
+    //이동
+    public void move(){
+        Random random = new Random();
+        if (random.nextInt(10)>=4){
+            this.position++;
+        }
+    }
+    //이름 입력
+    public String getname(){
+        return name;
+        }
+    //위치
+    public int getPosition(){
+        return position;
+    }
+    //현 상태
+    public String getstatus(){
+        StringBuilder status = new StringBuilder(name + " : ");
+        for (int i = 0; i < position; i++) {
+            status.append("-");
+        }
+        return status.toString();
+    }
+
+}
+
+
 
 public class Application {
-    public static void main(String[] args) {
-        // TODO: 프로그램 구현
+    public static void main(String[] args){
+        try{
+            Scanner sc = new Scanner(System.in);
+            //이름 입력받기
+            System.out.println("경주할 자동차 이름을 입력하세요.(이름은 쉼표(,) 기준으로 구분)");
+            String[] carnames = sc.nextLine().split(",");
+            List<Car> cars = new ArrayList<>();
+            for (String name : carnames){
+                cars.add(new Car(name));
+            }
+            //회수 입력받기
+            System.out.println("시도할 회수는 몇회인가요?");
+            int racecount = sc.nextInt();
+            if (racecount<=0){
+                throw new IllegalArgumentException ("시도 횟수는 양수여야 합니다.");
+            }
+            //경주
+            System.out.println("\n실행 결과");
+            for (int i=0; i<racecount; i++){
+                raceround(cars);
+                printroundresult(cars);
+            }
+
+            printwinners(cars);
+        }
+        catch(IllegalArgumentException e){
+            System.out.println("[ERROR] " + e.getMessage());
+        }
+    }
+    private static void raceround(List<Car> cars){
+            for (Car car : cars){
+                car.move();
+            }
+    }
+
+    private static void printroundresult(List<Car> cars){
+        for (Car car : cars) {
+            System.out.println(car.getstatus());
+        }
+        System.out.println();
+    }
+
+    private static void printwinners(List<Car> cars) {
+        int maxposition = 0;
+        for (Car car : cars) {
+            if (car.getPosition() > maxposition) {
+                maxposition = car.getPosition();
+            }
+        }
+        List<String> winnerNames = new ArrayList<>();
+        for (Car car : cars) {
+            if (car.getPosition() == maxposition) {
+                winnerNames.add(car.getname());
+            }
+        }
+        //우승자 출력
+        System.out.println("최종 우승자 : " + String.join(", ", winnerNames));
     }
 }