1. 소개

제가 만든 숫자야구 게임입니다.

2. 소스

import java.util.Scanner;

public class NumberBaseball {
    int digit = 4;
    int count = 0;
    String result = "";

    public static void main(String[] args) {
        NumberBaseball nb = new NumberBaseball();
        nb.init();
        nb.match();
    }

    void init() {
        while (result.length() < digit) {
            String random = (int) (Math.random() * 10) + "";
            if (result.contains(random)) {
                continue;
            } else {
                result += random;
            }
        }
    }

    void match() {
        Scanner scanner = null;
        try {
            scanner = new Scanner(System.in);
            String yourNumber = null;
            while (true) {
                System.out.print("yourNumber=");
                yourNumber = scanner.nextLine();
                int strike = 0;
                int ball = 0;
                if (yourNumber.length() != digit) {
                    System.out.println("Please input " + digit + " digit number ... ");
                } else {
                    for (int inx = 0; inx < yourNumber.length(); inx++) {
                        String c = yourNumber.charAt(inx) + "";
                        if (result.contains(c)) {
                            if (result.indexOf(c) == inx)
                                strike++;
                            else
                                ball++;
                        }
                    }

                    if ( strike == 4 ) {
                        System.out.println("You win! Game over!");
                        System.exit(0);
                    } else if (strike > 0 || ball > 0) {
                        System.out.println(strike + " Strike " + ball + " Ball!");
                    } else {
                        System.out.println("Out!");
                    }
                }
            }
        } catch (Exception e) {
            //
        } finally {
            scanner.close();
        }
    }
}