Question

我正在尝试完成这个算法，该算法应该用替换字替换txt文件中的拼写错误的单词。正如您所看到的，该算法由上面的注释描述，我已经完成了前两个部分，但我被困在for each line number where it appears:部分。我在试图找出如何设置循环时遇到问题。如果有人能帮助我朝着完成这种方法的方向发展，我将非常感激！

private void replace(String misspelled, String replacement){
    //TODO: Algorithm:
    //If wrongWords contains the misspelled word:
    //   get ALL the lineNumbers on where the misspelled word appears
    //   for each line number where it appears:
    //        in fileLines[line] replace misspelled with replacement
    //        (Hint: use one of the available methods in the String class to do the replacement)
    if(wrongWords.containsKey(misspelled))
       wrongWords.get(misspelled);

}

您可能会发现有用的其他值得注意的代码包括：

private void correctionMode(){   
  for(String line: fileLine)
    for(String w: line.split("//s"))
       if(wrongWords.containsKey(w)){
           System.out.println(wrongWords.get(w));
           System.out.println("replace all? (y or n): ");
           String r = scan.nextLine();
           if(r.equals("y")){
               System.out.println("Enter replacement: ");
               String r2 = scan.nextLine();
               replace(w, r2);
           }
           wrongWords.remove(w);
       }                        
}

此方法要求用户进行更正，然后转到替换方法，即我遇到问题的方法，如果用户想要进行更改。

private Scanner scan; // a Scanner to read user's input
private HashSet<String> dictionary;
private HashMap<String, ArrayList<Integer>> wrongWords;
private ArrayList<String> fileLine;

\\constructor
public SpellChecker(){
  scan = new Scanner(System.in);
  dictionary = new HashSet<String>();
  wrongWords = new HashMap<String, ArrayList<Integer>>(); //array is line numbers where misspelled word appears
  fileLine = new ArrayList<String>(); //each line is as separate element in the arraylist
}

类变量和构造函数也可能有用。

Answer 1

您不需要在每个行的两个方法中都使用for循环。

 //   for each line number where it appears:

和

for(String line: fileLine)

将其放入其中任何一个：

private void replace(String misspelled, String replacement){
         int i = 0;
         for(String line: fileLine) {
            if(line.contains(misspelled)) {
                line.replaceAll(misspelled, replacement);
                System.out.println("replaced word" + misspelled  + "in line number" + i );
                i++;
            }else i++;
         }
    }

从字典中替换拼写错误的单词

1 个答案: