循环内的随机数生成器

Question

尝试在控制猜数游戏的 while 循环中创建一个随机数生成器。问题是“太高”和“太低”提示会说一个数字（例如：35）太低，但随后会说嵌套输入数字（例如：36）太高。然后，当我在嵌套的 while 循环中移动调用随机函数时，它每次都会生成相同的随机数。

我尝试将对随机函数的调用移动到我最内层的循环，但随后它生成了相同的随机数。当前，它在外部 while 循环中，但随后出现高/低问题

import java.util.Scanner;

import java.util.Random;

public class numberGuessingGame

{

     public static void main (String[] args) 

    {

        int randomNumber, userNumber = 0, guesses = 0, correct;

        final int MAX = 100;

        char playAgain, playGame = 'y'; 

        //ask user if they wish to play   

        System.out.println("Would you like to play the Number          Guessing Game? y / n");

        Scanner scan = new Scanner (System.in);

        playGame = scan.next().charAt(0); 

        Random generator = new Random();

        //while loop to continue to exacute game as long as user enters 'y'

        while (playGame == 'y'){

            if (playGame != 'y') 

               break;

            randomNumber = generator.nextInt(MAX) + 1;

            //flag

            correct = 0;

           //loop to control the round

           while (correct == 0) {

                //get user number

                System.out.println("Please pick a number between 1 and 100.");

                userNumber = scan.nextInt();

               //high and low sugguestion

                if (userNumber > randomNumber)

                    System.out.println("Number is too high, try     something lower.");

                if (userNumber < randomNumber)

                    System.out.println("Number is too low, try something higher.");

                if (userNumber == randomNumber){ 

                 System.out.println("That number is correct!");

                    System.out.println("Would you like to play again? y/n");

                    playGame = scan.next().charAt(0);

                }

                guesses++;

                System.out.println("You have guessed " + guesses + " times!");

           }  

    }

Answer 1

我想建议您可能会考虑的一些更改：使用booleanforcorrect而不是int在: 它是多余的之后立即删除您的if声明whiledo-while当循环必须至少执行一次时使用使用Integer.compareTo而不是单独比较

Answer 2

你的内部循环不会终止，这就是为什么你有相同的 randomNumber，更改correct=0值以终止内部 while 循环if (userNumber == randomNumber){&nbsp;&nbsp;System.out.println("That number is correct!");&nbsp;System.out.println("Would you like to play again? y/n");&nbsp;playGame = scan.next().charAt(0);&nbsp;correct=1; //Just to remove correct=0 value}