TreeSet return 应该 return 为真时为假?

TreeSet returns false when it should return true?

我想检查我的 TreeSet 中是否有某个 String

它 returns false 当它应该 return true 时,但我不确定我的代码哪里搞砸了。这是代码:

HashSet<String> dict = new HashSet<String>();
//TreeSet<String> dict = new TreeSet<String>(dicty);  //snabbare såhär?
int ranNum;
String randomWord;

public AngloTrainer(String dictionaryFile) throws IOException {
    loadDictionary(dictionaryFile);
    System.out.println(dict.size() + " words loaded from dictionary.txt ");
    Random randNumb = new Random();
    ranNum = (randNumb.nextInt(6) + 4);
    //randomWord = randomLetters(ranNum);
    randomWord = "carpatrol";
    System.out.println("The random letters are: " + randomWord);
    Scanner reader = new Scanner(System.in);
    System.out.println("Guess a word!");
    //System.out.println(dict.contains("car"));
    //System.out.println(dict.contains("patrol"));
    //System.out.println(dict.contains("rat"));
    while(reader.hasNextLine() != false){
        String gWord = reader.next();
        if(includes(sort(randomWord), sort(gWord))){
            if(dict.contains(gWord)){
                System.out.println("ok!");  
            }else{
                System.out.println("not ok!");
            }
        }else{
            System.out.println("not ok!");
        }
    }
    //reader.close();
}

private String sort(String s){
    char[] charArray = s.toCharArray();
    Arrays.sort(charArray);
    return new String(charArray);
}

private void dumpDict() {
    for(String word: dict){
        System.out.println(word);
    }
}

private void loadDictionary( String fileName ) throws IOException{
    BufferedReader bufRead = new BufferedReader(new FileReader(new File(fileName)));
    while(bufRead.readLine() != null){
        dict.add(bufRead.readLine());
    }
    //bufRead.close();
}

private String randomLetters( int length ) {
    Random randomGenerator = new Random();
    String letters = "aabcdeefghiijklmnoopqrstuuvwxyyz";  
    StringBuffer buf = new StringBuffer(length);
    for ( int i = 0; i < length; i++ ) 
        buf.append( letters.charAt(randomGenerator.nextInt(letters.length())));

    return buf.toString();
}

private boolean includes( String a, String b ) {
    if ( b == null || b.length() == 0 )
        return true;
    else if ( a == null || a.length() == 0 )
        return false;   
    //precondition: a.length() > 0 && b.length() > 0
    int i = 0, j = 0;
    while ( j < b.length() ) {
        if (i >= a.length() || b.charAt(j) < a.charAt(i))
            return false;
        else if (b.charAt(j) == a.charAt(i)) {
            i++; j++;
        } else if (b.charAt(j) > a.charAt(i))
            i++;
    }
    //postcondition: j == b.length()
    return true;
}

include() 方法工作正常,它比较两个字符串以查看其中一个字符串中的字母是否包含在另一个字符串中。

include("car");    //returns true
include("patrol"); //returns true
include("rat");    //returns true

但是在上面的代码中输入 "car", "patrol" 和 "rat" 时, returns "false" 从 dict.contains(word)

上面所有的三个词,都在我的 .txt 文件中。

你知道哪里出了问题吗?如果您需要我的更多代码,我会编辑它,请告诉我。

编辑:有时当我尝试猜测一些单词时,它 return 是真的,但大多数时候它 return 是假的(dict.contains())。

EDIT2:添加了我所有的代码。

来自评论:

loadDictionary() works as it should

然而,这完全是错误的。现在我们可以看到它了,我们可以告诉你它只加载每隔一个单词。

BufferedReader bufRead = new BufferedReader(new FileReader(new File(fileName)));
while(bufRead.readLine() != null){
    dict.add(bufRead.readLine());
}

while循环中的readLine()读取第一行。 add() 调用中的 readLine() 读取第二行并将其添加到 dict.

第一行被丢弃。

这样重复,只有偶数行被添加到 dict

将代码更改为记住循环读取的行。
另外,记得关闭文件,例如通过使用 try-with-resources.

try (BufferedReader bufRead = new BufferedReader(new FileReader(new File(fileName)))) {
    for (String line; (line = bufRead.readLine()) != null; ) {
        dict.add(line);
    }
}