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Thread: need help with sorting

  1. #1
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    Default need help with sorting

    I got 99% done just need help with sorting code.

    It reads the text file that i added in the main class.





    import java.util.ArrayList;
    import java.util.Collections;
    import java.util.HashMap;
    import java.util.List;
    import java.util.Scanner;
    import java.io.File;
     
    public class WordCounter {
     
    private HashMap<String, Integer> wc;
     
    public WordCounter(String filename) {
    		wc = new HashMap<String, Integer>();
    		countWords(filename);
    }
    private void countWords(String filename)  {
    		try {
    			Scanner scan = new Scanner(new File(filename));
     
    			while (scan.hasNextLine()) {
           String[] words = scan.nextLine().split("[^a-zA-Z]+");
           // track of the frequency
               for (String s :words){	
               String word= s.toLowerCase();
               if(wc.containsKey(word)){
               		int x= wc.get(word); x++;
               		wc.put(word, x);
               }
               else
               		wc.put(word, 1);
               }
     
           }
    		}
    		catch (Exception e) {
               System.err.println(e);
               System.out.println("Exc");
           }
    }
     
    public HashMap<String, Integer> getWc() {
    		return wc;
    }
     
        public void print() {
     
        System.out.println("Word:\t\t\tFrequency:");
        System.out.println("-------------------------------------------------");
        for (String key : wc.keySet())
        		System.out.println(key + "\t\t\t" + wc.get(key));
     
        }
     
    public static void main(String[] args) throws Exception {
    		String filename = "test-file.txt";
    		if (args.length >= 1)
    			filename = args[0];
    		WordCounter wdc = new WordCounter(filename);
    		wdc.print();
    }
    }


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: need help with sorting

    need help with sorting code.
    Can you explain what problems you are having with more detail?
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Default Re: need help with sorting

    sure,

    it takes a txt file (in this case test-file.txt) and reads/prints it out also counts the freq. of the words in the txt (such as the word "bob" apperes 2 times). but i want it to be sorted in ABC

  4. #4
    Super Moderator Norm's Avatar
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    Default Re: need help with sorting

    but i want it to be sorted in ABC
    That doesn't have any details on how the code is going to do the sort.
    What are your ideas about how to do that?
    Where is the data that you want to sort?
    If you don't understand my answer, don't ignore it, ask a question.

  5. #5
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    Default Re: need help with sorting

    here what it prints out:

    Word: Frequency:
    -------------------------------------------------
    old 1
    is 1
    mars 1
    bob 2
    name 1
    years 1
    hi 1
    im 1
    in 1
    my 1
    live 1
    i 1

    I want it to be sorted by alphabetical order

    I cant figure out the correct code.

  6. #6
    Super Moderator Norm's Avatar
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    Default Re: need help with sorting

    To be able to sort a bunch of Strings, the String will need to be in a container. The code needs to add the Strings to a container so they can be sorted.
    If you don't understand my answer, don't ignore it, ask a question.

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