Otto

src/main/java/Baseball.java

@@ -0,0 +1,49 @@
+import java.util.Random;
+import java.util.Scanner;
+
+public class Baseball {
+    private final Random random;
+    private final Scanner sc;
+
+    public Baseball() {
+        random = new Random();
+        random.setSeed(System.currentTimeMillis());
+        sc = new Scanner(System.in);
+    }
+
+    private int generateNumbers() {
+        int[] values = new int[3];
+        values[0] = random.nextInt(8) + 1;
+        do {
+            values[1] = random.nextInt(8) + 1;
+        } while (values[1] == values[0]);
+        do {
+            values[2] = random.nextInt(8) + 1;
+        } while (values[2] == values[0] || values[2] == values[1]);
+        return values[0] * 100 + values[1] * 10 + values[2];
+    }
+
+    private int userInput() {
+        System.out.print("숫자를 입력해 주세요 : ");
+        return sc.nextInt();
+    }
+
+    private void clearGame() {
+        System.out.println("3개의 숫자를 모두 맞히셨습니다! 게임 종료");
+    }
+
+    public void baseballGame() {
+        int inputValue;
+        BaseballValue answer, guess;
+        answer = new BaseballValue(generateNumbers());
+        do {
+            inputValue = userInput();
+            guess = new BaseballValue(inputValue);
+            guess.compare(answer);
+            guess.printResult();
+        } while (guess.getStrike() < 3);
+        clearGame();
+    }
+
+
+}

src/main/java/BaseballValue.java

@@ -0,0 +1,60 @@
+public class BaseballValue {
+    private final int[] values = new int[3];
+    private final int[] count = new int[10];
+    private int strike;
+    private int ball;
+
+    public BaseballValue(int newValues) {
+        for (int i = 0; i < 10; i++) count[i] = 0;
+        for (int i = 2; i >= 0; i--) {
+            values[i] = newValues % 10;
+            newValues /= 10;
+            count[values[i]] = 1;
+        }
+        strike = 0;
+        ball = 0;
+    }
+
+    public int[] getValues() {
+        return values;
+    }
+
+    public int[] getCount() {
+        return count;
+    }
+
+    public int getStrike() {
+        return strike;
+    }
+
+    private int compareValue(int input1, int input2) {
+        if (input1 == input2) {
+            return 1;
+        }
+        return 0;
+    }
+
+    public void compare(BaseballValue comp) {
+        int[] compValue = comp.getValues();
+        int[] compCount = comp.getCount();
+        for (int i = 0; i < 3; i++) {
+            strike += compareValue(values[i], compValue[i]);
+            ball += compCount[values[i]];
+        }
+        ball -= strike;
+    }
+
+    public void printResult() {
+        if (strike > 0) {
+            System.out.print(strike + "스트라이크 ");
+        }
+        if (ball > 0) {
+            System.out.print(ball + "볼 ");
+        }
+        if (strike == 0 && ball == 0) {
+            System.out.print("낫싱");
+        }
+        System.out.print("\n");
+    }
+}
+

src/main/java/Main.java

@@ -0,0 +1,14 @@
+import java.util.Scanner;
+
+public class Main {
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        Baseball baseball = new Baseball();
+        int moreGame;
+        do {
+            baseball.baseballGame();
+            System.out.println("게임을 새로 시작하려면 1, 종료하려면 2를 입력하세요.");
+            moreGame = sc.nextInt();
+        } while (moreGame == 1);
+    }
+}