java - 使用哈希表检查单词的拼写

Question

我有一个单词数组被插入到哈希表中。然后是一个函数来检查用户输入的单词是否拼写正确。我的问题是，拼写检查器功能仅在我启动该单词时才起作用，但如果用户输入该单词(即使拼写正确)则不起作用。程序的设置方式不会发生冲突，但如果您对如何处理冲突有建议，请告诉我。

public class hashExample {

    String[] myArray = new String[31];

    public static void main(String[] args) {

        Scanner input = new Scanner(System.in);

        String[] words = { "Achieve", "Across", "Apparently", "Admin", 
                "Amazing", "Argument", "Assasination", "Accommodate" };

        hashExample theFunc = new hashExample();

        theFunc.hashFunction(words, theFunc.myArray);

        System.out.println("Enter a word to check for spelling...");

        String Word = input.nextLine();
        //Works only if I initiate Word.
        //String Word = "Accommodate";

        theFunc.findKey(Word);
    }

    public void hashFunction(String[] stringsForArray, String[] myArray) {

        for (int n = 0; n < stringsForArray.length; n++) {

            String newElementVal = stringsForArray[n];

            // Using ASCII values of the first four letters of each word.
            int arrayIndex = ((int)newElementVal.charAt(0) + (int)newElementVal.charAt(1)
            + (int)newElementVal.charAt(2)+ (int)newElementVal.charAt(3)) % 31;

            myArray[arrayIndex] = newElementVal;
        }
    }

    public void findKey(String key) {

        int indexHash = ((int)key.charAt(0) + (int)key.charAt(1) + (int)key.charAt(2)
        + (int)key.charAt(3)) % 31;

        String wordSearch = myArray[indexHash];

        if (key == wordSearch){
                System.out.println("Word is spelled correctly!");
            } else{
                System.out.println("Sorry word is not spelled correctly");
            }
    }
}

Answer 1

将 key == wordSearch 更改为 key.equals(wordSearch)，然后它将开始处理输入。

因为字符串是对象，如果要比较两个字符串，请使用 .equals 方法而不是 == 来比较它们。

if (key.equals(wordSearch)) {
    System.out.println("Word is spelled correctly!");
} else {
    System.out.println("Sorry word is not spelled correctly");
}