[숫자 야구 게임] 박지현 미션 제출합니다.

build.gradle

@@ -23,3 +23,4 @@ java {
 test {
     useJUnitPlatform()
 }
+

src/main/java/baseball/Application.java

@@ -1,7 +1,49 @@
 package baseball;
 
+import camp.nextstep.edu.missionutils.Randoms;
+import camp.nextstep.edu.missionutils.Console;
+
+import java.util.Scanner;
+
 public class Application {
     public static void main(String[] args) {
-        // TODO: 프로그램 구현
+        Scanner scanner = new Scanner(System.in);
+
+        System.out.println("숫자 야구 게임을 시작합니다.");
+        int[] randoms = new int[3];
+        RandomNumber random = new RandomNumber();
+        random.randomNumber(randoms);
+
+        while (true) {
+            try {
+                System.out.print("숫자를 입력해주세요 : ");
+
+                String answer = Console.readLine();
+                ExceptionHandler exceptionHandler = new ExceptionHandler();
+                exceptionHandler.checkValid(answer);
+
+                String[] answers = new String[3];
+                for (int i = 0; i < 3; i++) {
+                    answers[i] = answer.substring(i, i + 1);
+                }
+
+                Count count = new Count();
+                count.countStrike(randoms, answers);
+                count.countBall(randoms, answers);
+                count.printCount();
+
+                if (count.getStrikes() == 3) {
+                    System.out.println("게임을 새로 시작하려면 1, 종료하려면 2를 입력하세요.");
+                    int option = scanner.nextInt();
+                    if (option == 2) {
+                        return;
+                    } else {
+                        random.randomNumber(randoms);
+                    }
+                }
+            } catch (IllegalArgumentException e){
+                throw e;
+            }
+        }
     }
 }

src/main/java/baseball/Count.java

@@ -0,0 +1,49 @@
+package baseball;
+
+public class Count {
+    int strikes = 0;
+    int balls = 0;
+
+    int countStrike(int[] r, String[] str) {
+        for (int i = 0; i < 3; i++) {
+            if (r[i] == Integer.parseInt(str[i])) {
+                strikes++;
+            }
+        }
+        return strikes;
+    }
+
+    int countBall(int[] r, String[] str) {
+        for (int i = 0; i < 3; i++) {
+            for (int j = 0; j < 3; j++) {
+                if (i != j && r[i] == Integer.parseInt(str[j])) {
+                    balls++;
+                }
+            }
+        }
+        return balls;
+    }
+
+    void printCount() {
+        if(strikes == 3){
+            System.out.println("3스트라이크");
+            System.out.println("3개의 숫자를 모두 맞히셨습니다! 게임종료");
+        }
+        else if(strikes == 0 && balls != 0){
+            System.out.println(balls + "볼");
+        }
+        else if(strikes != 0 && balls == 0){
+            System.out.println(strikes + "스트라이크");
+        }
+        else if(strikes != 0 && balls != 0){
+            System.out.println(balls + "볼 " + strikes + "스트라이크");
+        }
+        else{
+            System.out.println("낫싱");
+        }
+    }
+
+    int getStrikes() {
+        return strikes;
+    }
+}

src/main/java/baseball/ExceptionHandler.java

@@ -0,0 +1,15 @@
+package baseball;
+
+public class ExceptionHandler {
+    void checkValid(String answer){
+        if(answer.length() != 3){
+            throw new IllegalArgumentException("3자리 수를 입력합니다.");
+        }
+        for (int i = 0; i < 3; i++) {
+            String a = answer.substring(i, i + 1);
+            if(a.equals("0")){
+                throw new IllegalArgumentException("잘못된 값을 입력했습니다.");
+            }
+        }
+    }
+}

src/main/java/baseball/RandomNumber.java

@@ -0,0 +1,22 @@
+package baseball;
+
+import camp.nextstep.edu.missionutils.Randoms;
+
+public class RandomNumber {
+    void randomNumber(int[] r){
+        boolean duplicate;
+
+        for (int i = 0; i < 3; i++) {
+            do {
+                duplicate = false;
+                r[i] = Randoms.pickNumberInRange(1, 9);
+                for (int j = 0; j < i; j++) {
+                    if (r[i] == r[j]) {
+                        duplicate = true;
+                        break;
+                    }
+                }
+            } while (duplicate);
+        }
+    }
+}