如何添加"作弊"功能到Java mastermind游戏

时间:2015-04-26 18:14:13

标签: java arrays

我正在写一个策划游戏,这是我的代码:

import java.util.*;

public class mm {
    public static void main(String[] args) {      
        System.out.println("I'm thinking of a 4 digit code.");
        int[] random=numberGenerator();
        int exact=0, close=0;
        while(exact!=4){
            int[] guess=userinput();
            exact=0;
            close=0;
            for(int i=0;i<guess.length;i++){
                if(guess[i]==random[i]){
                    exact++;
                }
                else if(random[i]==guess[0] || random[i]==guess[1] || random[i]==guess[2] || random[i]==guess[3]){
                    close++;
                }
            }
            if(exact==4){
                System.out.println("YOU GOT IT!");
            }
            else{
                System.out.println("Exact: "+exact+" Close: "+close);
            }
        }   
    }

public static int[] userinput(){
    System.out.println("Your guess: ");
    Scanner user = new Scanner(System.in);
    String input = user.nextLine();
    int[] guess = new int[4];
    for (int i = 0; i < 4; i++) {
        guess[i] = Integer.parseInt(String.valueOf(input.charAt(i)));
    }
    return guess;
}

public static int[] numberGenerator() {
    Random rnd = new Random();
    int[] randArray = {10,10,10,10};
    for(int i=0;i<randArray.length;i++){
        int temp = rnd.nextInt(9);
        while(temp == randArray[0] || temp == randArray[1] || temp == randArray[2] || temp == randArray[3]){
            temp=rnd.nextInt(9);
        }
        randArray[i]=temp;
    }
    return randArray;
}
}

现在程序正常运行。但是,我想添加一个功能,如果用户的输入是&#34; *&#34;,程序会输出&#34;输入的作弊码。密码是:XXXX(//生成的随机数)&#34;然后继续问。我试图写一个单独的cheat()函数来实现这一目标。但它再次调用numbergenerator(),因此秘密代码每次都会改变。如何避免这个问题?或者还有其他方法来实现这个功能吗?

BTW,这是作弊函数的逻辑:

if (guess.equals("*")){
    System.out.format("cheat code entered. The secret code is:")
    for(int i=0;i<guess.length;i++){
            System.out.print(guess[i]);
        }
}

1 个答案:

答案 0 :(得分:1)

作弊就是这样:

if (guess.equals("*")){
    System.out.format("cheat code entered. The secret code is:")
    for(int i=0;i<random.length;i++){
            System.out.print(random[i]);
        }
}

编辑:从userinput()

获取随机访问权的两种方法

A)随机传递给userinput()作为参数

public static int[] userinput(int[] random){
   ...

B)随机成为一个成员变量(可能是更好的方法)

public class mm {
    static int[] random;
    public static void main(String[] args) {      
        System.out.println("I'm thinking of a 4 digit code.");
        random=numberGenerator();
        ...