Question

我被困在一个我一直在努力的短期课程中。我需要找到一种方法来存储用户多次运行游戏后的最高分（最低分）。这是我的程序的代码 -

import java.util.*;
import java.util.Random;
import java.util.Scanner;
public class GuessingGame
{
public static void main(String[] args){


    Random rand = new Random();
    Scanner prompt = new Scanner(System.in);

    String play = "";
    boolean playAgain = true;
    int playTimes = 0;
    int lowScore = 0; 
    int count = 0;

    do{
        int target = rand.nextInt(100) + 1;

        System.out.print("\nEnter a number between 1 and 100: ");

        int guess = prompt.nextInt();

        while(guess != target){
            if(target > guess){
                System.out.println("The number is higher. Try again.");
                count++;
            }
            else{
                System.out.println("The number is lower. Try again.");
                count++;
            }

        System.out.print("Enter a number between 1 and 100: ");
        guess = prompt.nextInt();
        }

        System.out.println("You guessed correctly! Congratulations!");
        count++;
        System.out.println("Your score is: " + count);



        System.out.print("\nWould you like to play again? Yes or no?: ");
        play = prompt.next();

        if(play.equalsIgnoreCase("no")){
            playAgain = false;
        }
        else if(play.equalsIgnoreCase("yes")){
            count = 0;
            playAgain = true;
        }

        playTimes++;

        if(count < lowScore){
            lowScore = count;
        } 

    }while(playAgain);


    System.out.println("\nGame Summary");
    System.out.print("      Games played: " + playTimes);

    System.out.println("\n        Best Score: " +lowScore);

问题在于我一直在运行这个程序并且得分最高＆＃34;继续显示0.我试图带我的＆＃34;如果＆＃34;在while循环之外的语句，但它继续显示0.任何人都可以帮助我的逻辑？

Answer 1

count初始化为0且仅递增，因此除非发生溢出，否则它不会为负。

lowScore初始化为0且任何非负数都不小于，因此count < lowScore实现的机会太少。

您应该将lowScore初始化为Integer.MAX_VALUE或引入变量以记住lowScore是否具有如下有效分数：

int lowScore = 0;
int count = 0;
boolean isLowScoreValid = false; // the variable

if(!isLowScoreValid || count < lowScore){ // update if any value were't set
    lowScore = count;
    isLowScoreValid = true; // now a value is set
}

System.out.println("\n        Best Score: " +(isLowScoreValid ? lowScore : "(none)"));

Answer 2

您需要将lowScore初始化为可能的最高整数。尝试
int lowScore = Integer.MAX_VALUE;然后运行您的程序。干杯！

跟踪猜测游戏中的最低分数没有列表/数组（Java）

2 个答案: