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Java LinkedHashSet无法从ArrayList中删除重复的句子_Java_Android_Regex_Linkedhashset - Fatal编程技术网

Java LinkedHashSet无法从ArrayList中删除重复的句子

Java LinkedHashSet无法从ArrayList中删除重复的句子,java,android,regex,linkedhashset,Java,Android,Regex,Linkedhashset,我正在构建一个android/Java程序,它从文本文件中读取并将文本文件中的每个句子存储在数组列表中。然后检查句子中每个单词的出现情况,打印出所有包含重复单词的句子 这是我用来打印最终结果的代码: protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.text4); text = (TextV

我正在构建一个android/Java程序,它从文本文件中读取并将文本文件中的每个句子存储在数组列表中。然后检查句子中每个单词的出现情况,打印出所有包含重复单词的句子

这是我用来打印最终结果的代码:

    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.text4);
    text = (TextView)findViewById(R.id.info2);
    BufferedReader reader = null;

    try {
        reader = new BufferedReader(
                new InputStreamReader(getAssets().open("input3.txt")));

        String line;

        List<String> sentences = new ArrayList<String>();

        for ( String line2; (line2 = reader.readLine()) != null;) {

            for (String sentence : line2.split("(?<=[.?!\t])")) {
                sentence = sentence.trim();
                if (! sentence.isEmpty()) {
                    sentences.add(sentence);
                }                   
            }  

            String[] keys = line2.split(" ");
            String[] uniqueKeys;

            int count = 0;
            uniqueKeys = getUniqueKeys(keys);

            for(String key: uniqueKeys)
            {
                if(null == key)
                {
                    break;
                }           
                for(String s : keys)
                {
                    if(key.equals(s))
                    {
                        count++;
                    }               
                }

                if(key.equals("a") || key.equals("the")|| key.equals("is")|| key.equals("of")|| key.equals("and")|| key.equals("The") || key.equals("some") || key.equals("on") || key.equals("during") || key.equals("to") || key.equals("since") || key.equals("in") || key.equals("by") || key.equals("for") || key.equals("were") ||key.equals("--") || key.equals("in") || key.equals("as") || key.equals("that") || key.equals("may") || key.equals("can") || key.equals("without") || key.equals("You")){
                    count = 0;
                }

                if(count >1 ){

                    MyKey = key;


                    Pattern word = Pattern.compile("\\b"+key+"\\b", Pattern.CASE_INSENSITIVE);

                    //sentences is the arrayList of sentences in this program
                    LinkedHashSet<String> lhs = new LinkedHashSet<String>();
                    for (String sentence : sentences) {
                        //checks the occurance of keyword within each sentence 
                        if (word.matcher(sentence).find()) {


                            lhs.add(sentence);


                        }                                          

                    }
                    for (String sentence2 : lhs) {
                        text.append(sentence2);                                     
                    }


                }
                count=0;
            }   


        }


    } catch (IOException e) {
         Toast.makeText(getApplicationContext(),"Error reading file!",Toast.LENGTH_LONG).show();
         e.printStackTrace();
    }finally {
        if (reader != null) {
            try {
                reader.close();
            } catch (IOException e) {
                //log the exception
            }            

        }

    }







}
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.text4);
text=(TextView)findViewById(R.id.info2);
BufferedReader reader=null;
试一试{
读卡器=新的BufferedReader(
新的InputStreamReader(getAssets().open(“input3.txt”);
弦线;
列出句子=新建ArrayList();
对于(字符串line2;(line2=reader.readLine())!=null;){

对于(字符串句子:line2.split((?),每次该单词与您正在创建新LinkedHashSet实例的句子匹配时

试试这个:

//sentences is the arrayList of sentences in this program
LinkedHashSet<String> lhs = new LinkedHashSet<String>();  
for (String sentence : sentences) {
    //checks the occurance of keyword within each sentence 
    if (word.matcher(sentence).find()) {
        lhs.add(sentence);
        }
}

//displays the final result on the output window
String text = "";
for (String sentence2 : lhs) {
    text.append(sentence2);                                     
}
//句子是此程序中句子的数组列表
LinkedHashSet lhs=新LinkedHashSet();
for(字符串句子:句子){
//检查每个句子中关键字的出现情况
if(word.matcher(句子).find()){
lhs.添加(句子);
}
}
//在输出窗口上显示最终结果
字符串文本=”;
for(字符串语句2:lhs){
文本。追加(第2句);
}

为什么要添加字符串text=“”;text是我的TextView的名称,以避免出现空指针异常。如果您之前已经声明了,请删除我的一个。如果它对您有效,请向上投票!(:您现在可以检查一下吗,我已经添加了我程序中的所有代码。这是一个生成错误吗?运行时错误?发布您的疑问。当我运行上面的程序时,它会显示包含“key”的句子,正如我在问题中解释的那样。但是,上面的示例中的一些句子包含2“key”“单词。因此,程序将特定的句子识别为两个独立的句子。这就是为什么我尝试使用LinkedHashSet来防止重复的句子显示。