숫자야구게임

src/main/java/StringNumberBaseBallGame.java

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+import java.util.Arrays;
+import java.util.Random;
+import java.util.Scanner;
+
+public class StringNumberBaseBallGame {
+
+    public static void main(String[] args) {
+
+        Random random = new Random();
+        String[] randomNumber = new String[3];
+
+        // 스트라이크 수 초기화
+        int strikeCnt = 0;
+        // 볼 수 초기화
+        int ballCnt = 0;
+
+        // 3자리 난수 생성 (int 값을 String으로 형변환)
+        for (int i = 0; i < 3; i++) {
+            randomNumber[i] = Integer.toString(random.nextInt(9));
+        }
+        randomNumber[0] = "1";
+        randomNumber[1] = "1";
+        randomNumber[2] = "2";
+
+        System.out.println("난수 값 : " + Arrays.toString(randomNumber));
+        // 사용자가 입력한 숫자
+        String baseBallNumber = "";
+
+        Scanner scanner = new Scanner(System.in);
+        System.out.print("숫자를 입력해주세요. : ");
+
+        baseBallNumber = scanner.nextLine();
+
+        // 입력받은 숫자를 String배열로 저장
+        String[] baseBallNumberArray = baseBallNumber.split("");
+
+        for (int i = 0; i < randomNumber.length; i++){
+
+            strikeCnt = _getStrikeCnt(strikeCnt, randomNumber[i], baseBallNumberArray[i]);
+
+            ballCnt = _getballCnt( ballCnt,  i, randomNumber[i], baseBallNumberArray );
+        }
+
+        if (strikeCnt == 0 && ballCnt == 0) {
+            System.out.println("낫싱");
+            return;
+        }
+
+        System.out.println("스트라이크 : " + strikeCnt);
+        System.out.println("볼 : " + ballCnt);
+    }
+
+    static int _getStrikeCnt(int strikeCnt, String randomNumber, String baseBallNumberArray) {
+
+        if (randomNumber.equals(baseBallNumberArray)) {
+            strikeCnt++;
+        }
+        return strikeCnt;
+    }
+
+    static int _getballCnt(int ballCnt, int index, String randomNumber, String[]baseBallNumberArray) {
+
+        for (int j = 0; j < baseBallNumberArray.length; j++){
+            ballCnt = _getLoop(ballCnt, index, j, randomNumber, baseBallNumberArray[j]);
+//            System.out.println("볼 cnt 값 확인 : " + ballCnt);
+        }
+
+        return ballCnt;
+    }
+
+    static int _getLoop(int ballCnt, int index1, int index2, String randomNumber, String baseBallNumberArray) {
+
+//        System.out.println("_getLoop index1 확인 : " + index1);
+//        System.out.println("_getLoop index2 확인 : " + index2);
+        if (index1 != index2 && randomNumber.equals(baseBallNumberArray)){
+            ballCnt++;
+//            System.out.println("_getLoop 볼 cnt 값 확인 : " + ballCnt);
+        }
+        return ballCnt;
+    }
+}