猜谜游戏-随机#1到100，要求用户5次猜正确的数字…初学者JAVA

Question

Java，Net beans 8.2

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

public class GuessingGame 
{
    public static void main (String[]args)
    {
        int answer, guess,attemptsNum = 0;
        final int maxAttempts = 5;
        String str, another = "y";

        Scanner scan = new Scanner(System.in);
        Random generator = new Random();
        answer = generator.nextInt(101)+1;

        System.out.println("Guess a number between 1 and 100");
        System.out.println("Enter your guess (0 to quit):");

        {
            guess = scan.nextInt();
            while (guess != 0)
            {
                if(guess==answer)
                        System.out.println("Right!");
                else if (guess<answer)
                    System.out.println("Your guess was too LOW.");
                else if (guess>answer)
                    System.out.println("Your guess was too HIGH.");
            }

            System.out.println("Want to Play again?(y/n)");
            another = scan.next();

            while (guess != answer && ++attemptsNum < maxAttempts)
                if (attemptsNum == maxAttempts)
                    System.out.println ("The number was " + answer);
    }
}

}

输入你的猜测（0退出）：20你的猜测太低了

Answer 1

几点评论：

1. 您需要处理代码的格式。这使得它的可读性更强。
2. 生成器生成1到101之间的值。它应该是answer=generator.nextint(100)+1；
3. 您的循环和某些逻辑是错误的
4. 我建议始终在public static void main之外创建一个单独的方法。这是常见的做法，这也允许您再次调用方法本身。

我是这样解决的：

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

class Main {
  public static Scanner scan = new Scanner(System.in);

  public static void main (String[]args) {
    runGame();
  }

  public static void runGame() {
    String another = "";
    int answer, guess,attemptsNum = 0;
    final int maxAttempts = 5;

    Random generator = new Random();
    answer = generator.nextInt(100)+1;

    System.out.println("Guess a number between 1 and 100");
    System.out.println("Enter your guess (0 to quit):");

    guess = scan.nextInt();
    while (guess != answer && attemptsNum < maxAttempts-1 && guess != 0 ) {
      if(guess==answer)
            System.out.println("Right!");
      else if (guess<answer) {
        System.out.println("Your guess was too LOW.");
        attemptsNum++;
        guess = scan.nextInt();
      } 
      else {
        System.out.println("Your guess was too HIGH.");
        attemptsNum++;
        guess = scan.nextInt();
      }
    }

    System.out.println ("The number was " + answer);
    System.out.println("Want to Play again?(y/n)");
    another = scan.next();
    System.out.println("another = " + another);
    if(another.equals("y")) {
      runGame();
    } else {
      System.out.println("Goodbye!");
    }
  }
}