java - 删除以前的字符串条目

Question

不太确定如何表达这个问题。我正在编写一个拼写检查程序，它从文本文件中读取单词。然后将这些单词添加到以下类型的 ArrayList 中:

ArrayList<String> dictionaryList = new ArrayList<String>();

现在，程序以无限循环的方式运行(直到键入“q”)，并提示用户搜索单词。如果可以找到该单词，程序将返回一条简单的“找到单词”消息。

否则；获取搜索词并生成该词的变体。这些变体已添加到列表中:

ArrayList<String> allSimilarWords = new ArrayList<String>();

例如，单词“coffei”会生成一系列“相似单词”，其中之一是“coffee”(英语单词) 。

现在，看到我既有所有字典单词的列表，也有相似单词的列表，程序会检查 allSimilarWords 中的单词是否包含在 dictionaryList< 中/强>。

我已经检查了我的 generateSimilarWords 方法，它按预期工作。

但是，在第二次要求用户输入时出现问题。第一次(输入“coffei”(其中 coffee 在字典列表中))，程序会生成以下输出:

Enter search term: 
coffei
Suggestion for similar words: 
-coffee

由于这是一个无限循环，程序要求我输入另一个单词。现在，如果我输入“banaan”(其中 banana 在字典中)，程序会生成以下输出:

Enter search term: 
banaan
Suggestion for similar words: 
-coffee
-banana

因此，它“记住”我搜索咖啡，并除了“香蕉”一词之外还提供“咖啡”作为建议词。我一直试图找出为什么会发生这种情况，但找不到我的错误。任何帮助将不胜感激。代码如下:

代码

//GETTING SIMILAR WORD ARRAYLIST
public ArrayList<ArrayList<String>> getSimilarWords(String searchWord) {
    this.searchWord = searchWord;
    char[] wordAsCharacterArray = searchWord.toCharArray(); //Convert search String to a character array

    //Call helper methods to add the suggested similar words to the similarWordArrayList
    similarWordArrayList.add(charSwap(wordAsCharacterArray));   //Add swapped character suggestions
    similarWordArrayList.add(charRemove(wordAsCharacterArray)); //Add removed character suggestions
    similarWordArrayList.add(charAdd(wordAsCharacterArray)); //Add removed character suggestions
    similarWordArrayList.add(charReplace(wordAsCharacterArray)); //Add removed character suggestions

    return similarWordArrayList;
}

similarWordArrayList 随后被“转换”为仅包含 String 元素的 ArrayList，而不是 ArrayList < ArrayList< String >> 类型的列表。

//Method to generate and suggest similar words
private void suggestWords(ArrayList<ArrayList<String>> similarWords) {
    allSimilarWords = convertSingleList(similarWords);
    String currWord = "";

    outer: for(int i = 0; i < allSimilarWords.size(); i++) { //Iterate through the list of similar words
        currWord = allSimilarWords.get(i); //Set current similar word to a String variable
        for(int j = 0; j < i; j++) {
            if(currWord.equalsIgnoreCase(allSimilarWords.get(j))) {
                continue outer;
            }
        }
        if(myDictionaryList.contains(currWord)) {
            System.out.println("-" + currWord);
        }

    }
}

查找字符串的方法:

public void findString(String word) {
    searchTerm = word;
    if(myDictionaryList.contains(word)) {    //If found
        System.out.println("Found word!");  //Notify
    }
    else {
        //Find all similar words
        System.out.println("Suggestions for similar words: ");
        similarWords = handler.getSimilarWords(searchTerm);
        suggestWords(similarWords);
    }
}

任何有关如何解决此问题的帮助，以便程序仅根据最后一个搜索词打印出建议的单词(而不记住以前建议的单词)，我们非常感激。

Answer 1

我认为，您要做的第一件事是在向数组列表添加单词之前清除数组列表。

//GETTING SIMILAR WORD ARRAYLIST
public ArrayList<ArrayList<String>> getSimilarWords(String searchWord) {
    this.searchWord = searchWord;
    char[] wordAsCharacterArray = searchWord.toCharArray(); //Convert search String to a character array

    //Clear the list before adding words
    similarWordArrayList.clear();

    //Call helper methods to add the suggested similar words to the similarWordArrayList
    similarWordArrayList.add(charSwap(wordAsCharacterArray));   //Add swapped character suggestions
    similarWordArrayList.add(charRemove(wordAsCharacterArray)); //Add removed character suggestions
    similarWordArrayList.add(charAdd(wordAsCharacterArray)); //Add removed character suggestions
    similarWordArrayList.add(charReplace(wordAsCharacterArray)); //Add removed character suggestions

    return similarWordArrayList;
}