hang子手遊戲中的bug

Question

所以，我已經成功地製作了一個非常簡單但完整的hang子手版本。現在我想改進程序並慢慢添加功能（最終是我希望的圖形）。我想解決的第一件事就是重複字母，在這一點上，如果用戶決定鍵入單詞長度的同一個字母（單詞中的一個），他們會得到虛假的「勝利」。阻止這種情況發生的最好方法是什麼？

ps。我是編程新手，這個項目對我來說真的很難......所以如果答案真的很明顯，對不起問題，我今晚不能再想了。

任何幫助，將不勝感激，這裏是我的代碼：

import java.io.*; 

public class hangman_test2 
{ 

    public static void main(String[] args) throws IOException 
    { 
     BufferedReader in; 
     in = new BufferedReader (new InputStreamReader (System.in)); 

     boolean Lets_play=true; 
     String response; 

     while (Lets_play) 
     { 
      printheader(); 

      String the_word=getWord(); 

      System.out.println(the_word); 
      print_blanks(the_word);  

      guesses(the_word); 

      System.out.println("Want to play again?"); 
      response=in.readLine(); 
      if(response.charAt(0)=='n' || response.charAt(0)=='N') 
      { 
       Lets_play= false; 
       System.out.println("Thanks for playing!"); 
      } 
     } 
    }//end main 


    public static void printheader() 
    { 
    System.out.println("Welcome, lets play hangman!"); 
    System.out.println("enter letters to guess the word\n"); 
    }//end print header 

    public static String getWord() 
    { 

     String [] possible_word=new String [10]; 


     possible_word[0]="green"; 
     possible_word[1]="orange"; 
     possible_word[2]="tree"; 
     possible_word[3]="flowers"; 
     possible_word[4]="ocean"; 
     possible_word[5]="grudge"; 
     possible_word[6]="scraple"; 
     possible_word[7]="crab"; 
     possible_word[8]="insect"; 
     possible_word[9]="stripes"; 


     String theWord= possible_word [(int)(Math.random()*possible_word.length)]; 
     return theWord; 
    }//end the word 

    public static void print_blanks(String the_word) 
    { 
     for (int x=0; x<the_word.length(); x++) 
     { 
      System.out.print("_ "); 
     } 

    }//print blanks 

    public static void guesses(String the_word)throws IOException 
    { 
     BufferedReader in; 
     in = new BufferedReader (new InputStreamReader (System.in)); 

     boolean thisRound=true; 
     int strike=0; 


     int right_letter=0; 


     while (thisRound) 
     { 

      int letters_not_in_word=0; 

      char letter_guessed=in.readLine().charAt(0); 


      for (int current_letter=0; current_letter<the_word.length(); current_letter++) 
      { 

       if (the_word.charAt(current_letter)==letter_guessed) 


       { 

        System.out.println(letter_guessed + " fits in space number " + (current_letter+1)); 

        right_letter++; 


        if(right_letter == the_word.length()) 
        { 

         win(the_word); 
         thisRound=false; 
        } 
       } 

       else 
       { 
        letters_not_in_word++; 

        if (letters_not_in_word==the_word.length()) 
        { 
         System.out.println(letter_guessed + " is not in the word"); 
         strike ++; 

         if(strike==5) 
         { 
          lose(the_word); 
          thisRound=false; 
         } 

        }//if 

       }//else 
      }//for 

     }//while 

    }//end guesses 


    public static void win(String word) 
    { 
    System.out.println("\ncongradulations, you won!"); 
    System.out.println("the word is " + word + "\n"); 
    } 

    public static void lose(String word) 
    { 
    System.out.println("\nsorry, you lost"); 
    System.out.println("the word is " + word + "\n"); 
    } 

} 

Answer 1

看一看HashSet和Set接口。集合做什麼是防止兩次添加相同的對象。

因此，每次用戶添加一個字母，檢查它是否已經在集合中。如果不是，則檢查他們的猜測並將其添加到集合中。如果它已經在集合中，那麼忽略他們的猜測。