숫자 야구 게임

Baseball.java

package baseball;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

public class Baseball {
    static ArrayList<Integer> generateComputerBalls() {
        List<Integer> possibleBalls = Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9);
        Collections.shuffle(possibleBalls);
        
        ArrayList<Integer> computerBalls = new ArrayList<>(3);
        computerBalls.add(possibleBalls.get(0));
        computerBalls.add(possibleBalls.get(1));
        computerBalls.add(possibleBalls.get(2));
        return computerBalls;
    }
    
    static int calculateBall(ArrayList<Integer> computerBalls, int userBall, int position) {
        if (!computerBalls.contains(userBall)) {
            return 0;
        }
        
        int computerBall = computerBalls.get(position);
        if (userBall == computerBall) {
            return 2;
        }
        
        return 1;
    }
    
    static String calculateBalls(ArrayList<Integer> computerBalls, ArrayList<Integer> userBalls) {
        int strike = 0;
        int ball = 0;
        for (int i = 0; i < userBalls.size(); i++) {
            int result = calculateBall(computerBalls, userBalls.get(i), i);
            
            if (result == 2) {
                strike++;
            } else if (result == 1) {
                ball++;
            }
        }
        
        return String.format("결과 : %d strike, %d ball", strike, ball);
    }
    
    static ArrayList<Integer> inputUserBalls(String inputValue) {
        String[] values = inputValue.split(" ");
        ArrayList<Integer> userBalls = new ArrayList<>();
        for (String value : values) {
            userBalls.add(Integer.parseInt(value));
        }
        return userBalls;
    }
}

BaseballMain.java

package baseball;

import java.util.ArrayList;
import java.util.Scanner;

public class BaseballGame {
    static String inputUserBalls(Scanner scanner) {
        System.out.println("예상하는 3개의 값을 입력하세요.(예. 1 2 3)");
        return scanner.nextLine();
    }
    
    public static void main(String[] args) {
        ArrayList<Integer> computerBalls = Baseball.generateComputerBalls();
        
        Scanner scanner = new Scanner(System.in);
        while(true) {
            int strike = 0;
            int ball = 0;
            String inputValue = inputUserBalls(scanner);
            ArrayList<Integer> userBalls = Baseball.inputUserBalls(inputValue);
            for (int i = 0; i < userBalls.size(); i++) {
                int result = Baseball.calculateBall(computerBalls, userBalls.get(i), i);
                if (result == 2) {
                    strike++;
                } else if (result == 1) {
                    ball++;
                }
            }
            System.out.println(String.format("결과 : %d strike, %d ball", strike, ball));
            
            if (strike == 3) {
                System.out.println("게임 종료");
                break;
            }
        }
        scanner.close();
    }
}

어? 한 gist 에 여러 파일을 넣을 수 있네요??