我想检查String
中是否有某个TreeSet
。
当它返回false
时会返回true
,但我不确定我在代码中搞砸了哪里。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,它会比较两个字符串,看看其中一个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
但是当在上面的代码中输入“car”,“patrol”和“rat”时,它会从dict.contains(word)
上面的三个单词都在我的.txt文件中。
你有什么想法吗?如果您需要更多我的代码,我会对其进行编辑,请告诉我。
编辑:有时当我尝试猜测某些单词时,它会返回true,但大多数时候它会返回false(dict.contains())。EDIT2:添加了我的所有代码。
答案 0 :(得分:1)
来自评论:
loadDictionary()按原样运行
然而,这完全是不真实的。现在我们可以看到它,我们可以告诉你它只加载其他所有单词。
BufferedReader bufRead = new BufferedReader(new FileReader(new File(fileName)));
while(bufRead.readLine() != null){
dict.add(bufRead.readLine());
}
readLine()
循环中的while
读取第一行。 readLine()
调用中的add()
会读取第二行并将其添加到dict
。
第一行被丢弃。
这样重复,只有偶数行添加到dict
。
将代码更改为记住循环读取的行 另外,请记得关闭文件,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);
}
}