Question

我对这个程序有很多问题。我不能让我的字符串比较工作，我有几个无限循环，我不知道如何解决。我会很高兴看到一双新鲜的眼睛向我展示我所缺少的东西，我已经盯着它看了3天而且我一直在跳过我的错误。程序需要从给定的文本文件中选择一个随机单词，对该单词进行加扰，然后让用户猜出原始单词是什么。提示应显示单词中给定随机位置的字母。

import java.util.Scanner;
import java.util.Random;
import java.io.*;
import java.util.*;

public class Proj4 {
    public static void main (String[] args) throws IOException{
        int wordScore = 10; 
        int score = 0;
        boolean game = true;
        int i = 0;
        Scanner in = new Scanner(System.in);
        char responseLetter = 'n';
        boolean allTrue = false;
        boolean scramble = true;
        StringBuilder sb = new StringBuilder ();
        int counter = 0;
        int position = 0;   

        System.out.println("Enter in a file containing words (Ex: words.txt) : ");
        String filename = in.nextLine();
        Scanner inFile = new Scanner(new File(filename));           

        String size = inFile.nextLine();
        System.out.println(size);
        int arrayLength = Integer.parseInt(size);
        String[] wordList = new String[arrayLength];
        Random rndm = new Random();  
        while (inFile.hasNext()) {    
        // this section puts the contents of the text file into the array        
            wordList[i] = inFile.nextLine(); 
            i++;
        }

        while (game == true) {       
            // System.out.println("Current puzzle: " + scrambledWord); 
            // System.out.println("Current points for word " + wordScore);
            // System.out.println("Enter (g)uess, (n)ew word, (h)int, or (q)uit: ");
            //  responseLetter = in.next().charAt(0);
            if (responseLetter == 'n') {     
                // goes back to the beginning but does not change word. I cant move the picker down becauase it throws off g 
                String pickedWord = wordList[rndm.nextInt(arrayLength )];
                boolean [] used = new boolean[pickedWord.length()] ; // the random word gets picked here                
                String [] letters = pickedWord.split("");
                while (allTrue == false) {  
                    int randomLetter = rndm.nextInt(pickedWord.length());
                    if (used[randomLetter] != true) {
                        sb.append(letters[randomLetter].charAt(0)); // does this line work?
                        used[randomLetter] = true;    
                    } else if (used[randomLetter]== true) {
                        scramble = true;
                        counter++;
                    }
                    if (counter > (2 * pickedWord.length())) {
                        allTrue = true;
                    }
                }
                String scrambledWord = sb.toString();
                if (scrambledWord.equals(pickedWord)) {
                    System.out.println("The words match");
                    allTrue = false;
                }          
                System.out.println("Current puzzle: " + scrambledWord); 
                System.out.println("Current points for word " + wordScore);
                System.out.println("Enter (g)uess, (n)ew word, (h)int, or (q)uit: ");
                responseLetter = in.next().charAt(0);
            } else if (responseLetter == 'g') {  
                // automatically says guess is wrong. something wrong with equals()?    
                System.out.println("Enter your guess: ");
                in.nextLine();
                String guess = in.nextLine();

                if (guess.equals(pickedWord)) {               
                    System.out.println("You guessed it!");
                    score += wordScore;
                    game = true;
                } else if (!guess.equals(pickedWord)) {
                    System.out.println("Oops! Try again.");
                    wordScore--;

                    System.out.println("Current points for word " + wordScore);
                    System.out.println("Enter (g)uess, (n)ew word, (h)int, or (q)uit: ");
                    responseLetter = in.next().charAt(0);

                }
            } else if (responseLetter == 'h') { 
                //THIS BLOCK WORKS. DONT EVEN LOOK AT IT
                Random r = new Random();
                int hint = r.nextInt(pickedWord.length());
                System.out.println(hint);
                char letterAtSpot = pickedWord.charAt(hint);
                System.out.println("The letter at spot " + hint + " is " + letterAtSpot);
                wordScore--;

            } else if (responseLetter == 'q') {
                game = false;
            } else {
                System.out.println("Invalid Choice - 'g', 'n', 'h', 'q' only.");
                responseLetter = 'n';
            }
        }
            System.out.println("Goodbye!");
            System.out.println("Total score: " + score);

    }
}

Answer 1

突然出现的第一件事是if / else阶梯。

String scrambledWord = sb.toString();
      if (scrambledWord.equals(pickedWord)) {
          System.out.println("The words match");
          allTrue = false;
        }          
        System.out.println("Current puzzle: " + scrambledWord); 
        System.out.println("Current points for word " + wordScore);
        System.out.println("Enter (g)uess, (n)ew word, (h)int, or (q)uit: ");
         responseLetter = in.next().charAt(0);

    }

注意在获取responseLetter的响应之前如何关闭if语句。这意味着，您的循环条件：“当游戏== true”未正确评估时。

Answer 2

刚出门，我有一个编译错误，因为pickedWord被引用在声明它的if语句之外。因此，到if (guess.equals(pickedWord))时，编译器不知道pickedWord是什么。

Java字随机游戏

2 个答案: