java - 使用 HashMap 作为字典的翻译器 Java

Question

我需要创建某种翻译器。我有一个 HashMap，其中俄语和英语单词对分别作为键和值。当我用俄语输入一个短语时，我需要获得英语翻译或空/未找到字典中没有的单词。

所以我有这样的翻译方法:

public boolean isInDictionary(String word){
        if(dictionary.containsKey(word)){
            return true;
        }
        return false;
    }

    public String translateSentence(String sentence){
        StringBuilder result = new StringBuilder();
        String[] splittedStrings = sentence.split( "\n" );

        List<String> list = new ArrayList<>();
        for(String s : splittedStrings){
            result.append(translateCheck(s));
        }
        return result.toString();
    }

    public String getWord(String word){
        return dictionary.get(word);
    }

以下是我如何调用这些方法:

    Scanner scanner = new Scanner(System.in);
    Translator translator = new Translator();
    System.out.println("Input the phrase to translate:");
    String input = scanner.nextLine();
    System.out.println(translator.translateSentence(input));

当我用俄语输入不同的单词时，我会得到相应的翻译，而当我输入由不同单词组成的短语时，我会得到空值。那么我做错了什么？如果您能提供一些帮助，我将不胜感激!

Answer 1

类似这样的事情:

    public boolean isInDictionary(String word) {
        return dictionary.containsKey(word); //note the removal of the if as it already returns a boolean
    }

    public String translateSentence(String sentence) {
        StringBuilder result = new StringBuilder();
        String[] splittedStrings = sentence.trim().split(" "); // the actual change

        List<String> list = new ArrayList<>();
        for (String s : splittedStrings) {
            result.append(translateCheck(s));
        }
        return result.toString();
    }

    public String getWord(String word) {
        return dictionary.get(word);
    }