2011-03-11 112 views
1
// Calculating term frequency 
    System.out.println("Please enter the required word :"); 
    Scanner scan = new Scanner(System.in); 
    String word = scan.nextLine(); 

    String[] array = word.split(" "); 
    int filename = 11; 
    String[] fileName = new String[filename]; 
    int a = 0; 



    for (a = 0; a < filename; a++) { 

     try { 
      System.out.println("The word inputted is " + word); 
      File file = new File(
        "C:\\Users\\user\\fypworkspace\\TextRenderer\\abc" + a 
          + ".txt"); 
      System.out.println(" _________________"); 

      System.out.print("| File = abc" + a + ".txt | \t\t \n"); 

      for (int i = 0; i < array.length; i++) { 

       int totalCount = 0; 
       int wordCount = 0; 

       Scanner s = new Scanner(file); 
       { 
        while (s.hasNext()) { 
         totalCount++; 
         if (s.next().equals(array[i])) 
          wordCount++; 

        } 

        System.out.print(array[i] + " ---> Word count = " 
          + "\t\t " + "|" + wordCount + "|"); 
        System.out.print(" Total count = " + "\t\t " + "|" 
          + totalCount + "|"); 
        System.out.printf(" Term Frequency = | %8.4f |", 
          (double) wordCount/totalCount); 

        System.out.println("\t "); 

       } 
      } 
     } catch (FileNotFoundException e) { 
      System.out.println("File is not found"); 

     } 

    } 

这是我的代码,用于计算包含文本的文本文件的字数,总词数和词频。问题是我需要访问for循环之外的变量wordcount和totalcount。但改变地方声明变量wordcount和totalcount也会改变结果,使其不准确。有人可以帮我处理变量,这样我可以得到准确的结果,并且还可以访问for循环之外的变量吗?变量范围问题

回答

1

简单地将它们声明外循环,但要赋予它们以0内环路:

  int totalCount; 
      int wordCount; 
      for (...) {     
       totalCount = 0; 
       wordCount = 0; 
       ... 
      } 
      // some code which uses totalCount and wordCount