Java 刽子手：当字母被猜中的时候，你是怎么发现的？

我正在用java创建一个hangman程序。该程序应该随机生成单词，当用户正确猜出一个字母时，它就会显示出来。我创建了一个函数，它根据单词的长度打印下划线的数量。我遇到的问题是，我不确定在猜测时如何用字母替换下划线

public static void main(String[] args) {
    int choice;
    String wordSoFar = "";

        Console.print("Take your time.");
        choice = Console.readInt("Enter your choice, when you're ready : ");

    }

    if (choice == 1) {
        
        for (int i = 0; i < wordLength; i++) {
            word += " _ ";
        }

        do {
            String guess = Console.readString("Enter your guess here : ");
            String response = secert(guess);
            Console.print(response);
        } while (incorrectLetters < maxIncorectLetters || correctLetters < wordLength);
    }
}

public static String secretWordSelector(String secretWord) {
    String[] secretWordsList = { "fun", "boring", "yellow", "phython", "tesla", "iphone", "computer", "adventure",
             };
    int min = 0;
    int max = 8;

    secretWord = secretWordsList[randomNumber(min, max)];

    return secretWord;

}
public static String letterChecker(String guess, String wordSoFar) {
    String response = "";
    String secertWord = "";
    if (secretWord == guess)) {
        int index = secretWord.indexOf(guess);
        correctLetters++;
        answer = "Congratulations!
            
    } else  {
        answer= "That is a incorrect guess! 
    }

    return answer;
}

publicstaticvoidmain（字符串[]args）{
智力选择；
字符串wordSoFar=“”；
Console.print（“慢慢来”）；
choice=Console.readInt（“准备好后输入您的选择：”；
}
如果（选项==1）{
for（int i=0；i

通过以下更改，您的代码可以得到很大改进：

您不需要复杂函数，

randomNumber

。您只需将数组的长度传递给，它将在数组-1的

0

到

length\u范围内生成
int

同样，不需要函数

length

。您可以简单地调用以获取字符串的长度

您不必要地将参数传递给函数，

secretWordSelector

由于您在多个方法中使用了

字符串，因此通过使其全局化，处理起来会更容易

您在

letterChecker

中再次调用了

secretWordSelector

，这是错误的。您必须处理在用户选择选项时随机选择的同一单词

由于运算符错误，您的

while

循环是无限的。它应该是

while（不正确的字母

我已经重新编写了这个方法，

letterChecker

，其中有许多更改是不言自明的。我还提供了一些注释，以帮助您轻松理解其代码

包含这些改进的代码：

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

public class Main {
    private static int incorrectLetters;
    private static int correctLetters;
    private static String wordSoFar = "";

    public static void main(String[] args) {
        int choice;

        Scanner scanner = new Scanner(System.in);
        final int maxIncorectLetters = 6;
        System.out.println("Welcome to Mahmoud's Hangman game!");
        System.out.println("Would you like to play. 1 - Yes. 0 - No");
        System.out.print("Enter your choice: ");
        choice = Integer.parseInt(scanner.nextLine());

        if (choice == 0) {
            System.out.println("Take your time.");
            System.out.print("Enter your choice, when you're ready: ");
            choice = Integer.parseInt(scanner.nextLine());
        }

        if (choice == 1) {
            System.out.println("Be careful, you can only have 6 wrong guesses");
            int wordLength = 0;
            String secretWord = secretWordSelector();
            wordLength = secretWord.length();
            System.out.println("Your word has " + wordLength + " letters.");
            for (int i = 0; i < wordLength; i++) {
                wordSoFar += "_";
            }

            do {
                System.out.print("Enter your guess here: ");
                String guess = scanner.nextLine();
                String response = letterChecker(guess.toLowerCase().charAt(0), secretWord);
                System.out.println(response);
            } while (incorrectLetters < maxIncorectLetters && correctLetters < wordLength);
        }
    }

    public static String secretWordSelector() {
        String[] secretWordsList = { "geography", "cat", "yesterday", "java", "truck", "opportunity", "fish", "token",
                "transportation", "bottom", "apple", "cake", "remote", "boots", "terminology", "arm", "cranberry",
                "tool", "caterpillar", "spoon", "watermelon", "laptop", "toe", "toad", "fundamental", "capitol",
                "garbage", "anticipate", "pesky" };

        return secretWordsList[new Random().nextInt(secretWordsList.length)];
    }

    public static String letterChecker(char guess, String secretWord) {
        String response = "";

        // Initialize a StringBuilder with wordSoFar
        StringBuilder sb = new StringBuilder(wordSoFar);

        if (secretWord.indexOf(guess) != -1) {// i.e. if guess is present in secretWord
            // Replace each corresponding occurrence of '_' in the StringBuilder with guess
            for (int i = 0; i < secretWord.length(); i++) {
                char ch = secretWord.charAt(i);
                if (ch == guess) {
                    sb.setCharAt(i, ch);
                    correctLetters++;
                }
            }
            // Assign the updated StringBuilder to wordSoFar
            wordSoFar = sb.toString();
            return "Congratulations! You have guessed correctly. " + " You have " + incorrectLetters
                    + " incorrect guesses " + wordSoFar;
        }
        incorrectLetters++;
        response = "That is a incorrect guess! " + " You have " + incorrectLetters + " incorrect guesses " + wordSoFar;

        return response;
    }
}

                                                                                                                                         

Welcome to Mahmoud's Hangman game!
Would you like to play. 1 - Yes. 0 - No
Enter your choice: 1
Be careful, you can only have 6 wrong guesses
Your word has 4 letters.
Enter your guess here: o
That is a incorrect guess!  You have 1 incorrect guesses ____
Enter your guess here: e
That is a incorrect guess!  You have 2 incorrect guesses ____
Enter your guess here: a
That is a incorrect guess!  You have 3 incorrect guesses ____
Enter your guess here: h
Congratulations! You have guessed correctly.  You have 3 incorrect guesses ___h
Enter your guess here: f
Congratulations! You have guessed correctly.  You have 3 incorrect guesses f__h
Enter your guess here: i
Congratulations! You have guessed correctly.  You have 3 incorrect guesses fi_h
Enter your guess here: s
Congratulations! You have guessed correctly.  You have 3 incorrect guesses fish

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看看String.replaceAll（），它可能会派上用场！但我想你离我不远了。先用笔和纸解决它，然后修复java程序！