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Thread: Count occurrence of a string in an array list

  1. #1
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    Default Count occurrence of a string in an array list

    How to count occurrence of a string in a string array list. I have 800,000 strings in string list..


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    Default re: Count occurrence of a string in an array list

    Hi,

    Post your full code what you tried.

    Happy to help you

    thanks,

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    Default re: Count occurrence of a string in an array list

    Now I have one array of strings which has 60,000 unique strings. I also have one string abcd which has comma separated values of substrings. I want to find the occurrences of those unique strings in string abcd.

    I have tried like this..


    public void getscore () throws FileNotFoundException, IOException{

    byte[] buffer = new byte[1028];
    BufferedInputStream bufferedInput = new BufferedInputStream(new FileInputStream("F:/Major Project/DataSets/Bibsonomy/2008/modified/modified/titledata3"));

    int bytesRead = 0;
    while ((bytesRead = bufferedInput.read(buffer)) != -1) {

    String chunk = new String(buffer, 0, bytesRead);
    String a2[] = chunk.split(",");
    for(int i=0;i<a2.length;i++)
    abc.add(a2[i]);

    String chunk2 = new String(buffer,0,bytesRead);
    String a3[] = chunk.split(",");
    for(int i=0;i<a3.length;i++){
    xyz.add(a3[i]);
    }
    }

    }

    public void findcount (){

    //abc.toArray(a5);
    int n1;
    int c = 0;
    int i =0;
    n1 = abc.size();
    // System.out.println(n1);
    String abcd = abc.toString();
    xyz.toArray(a4);

    findStr = a4[1];
    System.out.println(a4[1]);

    while(!abcd.isEmpty()){
    if(a4[1].equalsIgnoreCase(abcd));
    {
    c++;
    }
    // i++;
    }
    System.out.println("Count is " +c);

    }


    // Thanks for reply..

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    Default re: Count occurrence of a string in an array list

    Welcome to the forum. Please read this topic to learn how to post code correctly.

    Please give your threads more useful/meaningful titles.

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