制作hang子手游戏

Question

逻辑： 这就是输出的样子。 http://prntscr.com/1is9ht我需要在orginalString中找到猜测的索引。如果这是真的，那么它应该用索引字符串中的字符替换索引处的问号。之后，它应该从字符串“abcdefghijklmnopqrstuvwxyz”中取出该字符。

如果originalString不包含猜比它应该只需要指出，从字符串“ABCDEFGHIJKLMNOPQRSTUVWXYZ”字符我抬起头，这个问题对谷歌，发现了一堆代码，他们都使用数组或东西，我没有在课堂上学到。所以请不要使用数组。我被困在if语句中。有没有办法解决这个问题，而不使用数组。

int count=1; 
while (count<=24){ 
    Scanner keyboard = new Scanner(System.in); 

    int length; 
    String originalString; 
    String guess; 
    String option= "abcdefghijklmnopqrstuvwxyz"; 
    String questionmarks; 

    System.out.println("Please enter a string"); 
    originalString=keyboard.nextLine(); 

    length=originalString.length(); 

    questionmarks = originalString.replaceAll(".", "?"); 



    System.out.println("Original String: "+originalString); 
    System.out.println("Guessed String: "+questionmarks); 
    System.out.println("Characters to choose from: "+option); 
    System.out.println("Please guess a character"); 
    guess=keyboard.nextLine(); 

    if (originalString.contains(guess)){ 
     count++; 


    } 


    else{ 
     option.replace(guess, "_"); 
     count++; 
     System.out.println(option); 

    } 

请建议我一些代码，未实现阵列概念我的问题， 任何帮助将不胜感激

Answer 1

，我从一个粗略地看一眼发现有几件事情：

• .replace()返回String，也不会修改option除非你做：

  option = option.replace(guess, "_");

• 此外，由于你不想使用数组，我强烈建议你使用StringBuilder

EDIT 1（根据开来重复螺纹评论）：
可以使用StringBuilder拥有初始化为全部-的字符串。然后，当有人猜测一个正确的信件时，您可以用guess替换-。

StringBuilder sb_word = new StringBuilder(lengthOfOriginalString); 

for (int i = 0; i < length; i++) 
    sb_word.append('-'); //add hyphens to StringBuilder, StringBuffer would also work 

你真的应该使用这样的：

final char blank = '-'; 

然后，有人提出一个guess后，如果您已经确定，在i位置的字符应该由guess更换，你可以这样做：

sb_word.setCharAt(i, guess.charAt(0)); 

编辑2：

while (bodyparts > 0 && !win) //play game while you have bodyparts and haven't won 
{  
    System.out.printf("Word to guess: %s\nEnter a letter or word guess: " , sb_word); 
    guess = keyboard.next(); 

    if (guess.length() == 1) 
    { 
     for (int i = 0; i < length; i++) //loop to see if guess is in originalString 
      if (Character.toLowerCase(word.charAt(i)) == 
       Character.toLowerCase(guess.charAt(0))) 
      { //it is, so set boolean contains to be true and replace blank with guess 
       sb_word.setCharAt(i, guess.charAt(0)); 
       contains = true; 
      } 

     if (!contains) 
     { 
      bodyparts--; 
      System.out.printf("Incorrect, you have %d bodyparts left.\n", bodyparts); 
     } 
     else if (sb_word.indexOf(String.valueOf(blank)) == -1) 
     { //all the letters have been uncovered, you win 
      win = true; 
      System.out.println(word); 
     } 
     else 
     { 
      contains = false; 
      System.out.println("Good guess."); 
     } 
    } 

    else 
    { 
     if (guess.equals(word)) 
      win = true; 
     else 
     { 
      bodyparts = 0; 
      System.out.printf("Incorrect, you have %d bodyparts left.\n" , bodyparts); 
     } 
    } 
}