java - Nim Logic错误游戏

我正在学校里尝试制作尼姆游戏，不幸的是，我得到的输出不同于我期望的输出；这是我的代码。

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

public class Nim2 {
    private static int numStonesLeft;

        /**
         */
     /**
      * The computerTurn method chooses a random number from 1 to 3 if
      * numStonesLeft is greater than or equal to 3, otherwise chooses a random
      * number from 1 to numStonesLeft.
      *
      * Then decrements numStonesLeft appropriately and prints the turn.
      */
     public static void computerTurn() {
         int stonesChosen = (int) (Math.random() * 16) + 15;

         numStonesLeft -= stonesChosen;
         System.out.println("\nI took " + stonesChosen + " stones.");
         System.out.println("There are " + numStonesLeft + " stones left.");
     }

     /**
      * The playerTurn method prompts the user for a valid number of stones to
      * choose and reads an int value from the user and will repeat this action
      * while the user input is invalid. (i.e. user must choose 1, 2 or 3 AND
      * their choice must be less than or equal to numStonesLeft.)
      *
      * Also decrements numStonesLeft appropriately and prints the turn.
      */
     public static void playerTurn() {
         Scanner input = new Scanner(System.in);
         System.out.println("Number of stones you take this turn:");
         int stonesChosen = 0;
         stonesChosen = input.nextInt();

         while (stonesChosen > 3 || stonesChosen < 1) {
             ;
             System.out.println("That is an invalid number of stones.");
             stonesChosen = input.nextInt();
         }

         if (stonesChosen <= 3 || stonesChosen >= 1)
             ;
         {
             System.out.println("\nYou took " + stonesChosen + " stones.");
             System.out.println("There are " + (numStonesLeft - stonesChosen)
                     + " stones left.");
         }
         stonesChosen = input.nextInt();

     }

     public void gameEnded() {
            boolean over = false;


            }
     }

不同的客户代码

public class TestNim2 {

    public static void main(String[] args) {

        Nim2 nim = new Nim2();
         int numStonesLeft = (int) (Math.random() * 16) + 15;
        System.out.println("This is the Game of nim.");
        System.out.println("There is a pile of " + numStonesLeft
                + " stones between us.");
        System.out.println("We alternate taking either 1,2 or 3 stones.");
        System.out.println("The person who takes the last stone loses");

        // Write a loop to alternate computerTurn() and playerTurn()
        // checking after each turn see if there is a winner to print
        // and to break the loop ... then output the winner


            nim.playerTurn();
            nim.computerTurn();
        }
}

我得到的输出是



我所需的输出应该类似于

最佳答案

有很多问题:

您不初始化numStonesLeft。

您在玩家回合中忘记了numStonesLeft -= stonesChosen;。

扣除后不检查numStonesLeft >= 0。

可以通过无条件执行以下作用域的方式来分析if后放置分号。停止在行的开头放置随机分号。

玩家回合中多余的stonesChosen = input.nextInt();。

关于java - Nim Logic错误游戏，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/40985694/