Question

该应用程序是一个简单的猜谜游戏，我得到了那部分。我的问题是制作一种方法，在任何猜测开始之前，玩家必须先猜出数字中正确的数字位数

例如，猜测为314且答案中有3位数，然后猜测太高的两个低位开始，否则它会一直循环直到你猜出正确的数字位数。

现在我已经创建了这样做的方法我认为这是一个相当简单的问题，但它是初始化变量的问题，以及我遇到问题的地方。

import java.util.Random;
import java.util.Scanner;


public class NumberGuess
{                  
    public static void main (String[] args)
    {
        final int MAX = 1000;
        int answer, guess; 


        Scanner Keyboard = new Scanner(System.in);
        Random generator = new Random(); //Random generator. 1 to 100.
        answer = generator.nextInt(MAX) +1;
        guess = Keyboard.nextInt();




        System.out.print ("I'm thinking of a number between 1 and "+ MAX + ". Guess what it is: (or enter 0 to quit) "); 

      do
        {
            System.out.print("Guess what the number is: ");
            guess = Keyboard.nextInt();

            if (guess > answer && guess != 0)
                System.out.println("Your guess is too high!");

            else if (guess < answer && guess !=0)
                System.out.println("Your guess is too low!");

               if(guess==0)
                System.out.println("you have ended your game");   

            else if (guess == answer)
                System.out.println("You got it!");

        } while (guess != answer&& guess!=0);

    }
    int NumOfDigits(int number)
          {
             int numDigits = 0;
             while (number/10 > 0);
             {
                number = number/10;
                numDigits++;
             } 
             return numDigits;
          }

    int  guess;
    Scanner Keyboard1 = new Scanner(System.in);
    guess = Keyboard1.nextInt();
    int target = NumOfDigits(answer);

          while(NumOfDigits(guess) != target);
            { 
               System.out.println("read anothrer input guess");
               guess = Keyboard1.nextInt(); 
            }
            System.out.println("you got the correct number of digits now guess the number!");
            guess = Keyboard1.nextInt(); 
}

Answer 1

你计算diigits的方法是错误的应该是这样的

public static int NumOfDigits(int number)
{
          int numofdigits = 0;   

    while(number>0){
        numofdigits++;
        number = number/10;
    }

    return numofdigits;
 }

因为你的方法返回2并且它应该返回3

在玩猜谜游戏之前计算整数中的位数

1 个答案: