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Thread: Scan text and add each word alphabetical listing

  1. #1
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    Exclamation Scan text and add each word alphabetical listing

    I'm scanning my text and I want to add them into array list, but it is not easy. I want each word store from arrayList of a to z which is arrayList size is 26. Example:
    arrayList a store string array of: an, and, apple, ...
    arrayList b store string array of: be, become, became....
    .
    .
    .
    arrayList z store string array of: zero, zone...

    In my class, I create:

    private static ArrayList<String[]> words = new ArrayList<String[]>(26); // to store all words

    In main, I do while loop to get each words and store in words array,

    please help me out to get it correctly and what is the easier way to do this problem. Here is my code. Thank

     
     
     
    import java.io.File;
    import java.io.FileNotFoundException;
    import java.util.ArrayList;
    import java.util.LinkedList;
    import java.util.Scanner;
     
     
    public class BinaryTree {
     
    	private static ArrayList<String[]> words = new ArrayList<String[]>(26);
     
    	public Node root; 
    	public void addNode(int key, String name) {
    		Node newNode = new Node(key, name);
    		if (root == null) {
    			root = newNode;
    		} else {
    			Node focusNode = root;
    			Node parent;
    			while (true) {
    				parent = focusNode;
    				if (key <focusNode.key) {
    					focusNode = focusNode.leftChild;
    					if (focusNode == null) {
    						parent.leftChild = newNode;
    						return;
    					}
    				} else {
    					focusNode = focusNode.rightChild;
    					if (focusNode == null) {
    						parent.rightChild = newNode;
    						return;
    					}
    				}
    			}
    		}
    	}
     
    	public void inOrderTraverseTree(Node focusNode){
    		if (focusNode != null) {
    			inOrderTraverseTree(focusNode.leftChild);
    			System.out.println(focusNode);
    			inOrderTraverseTree(focusNode.rightChild);
    		}
    	}
     
    //	public void insertBack(String data){
    //		
    //	}
     
    	public static void main(String[] args) throws FileNotFoundException {
     
    	//	String[] eachWord = new String[26];
     
    //		BinaryTree theTree = new BinaryTree();
    //		theTree.addNode(key, name);
     
     
    		Scanner scan = new Scanner(new File("concordance.txt"));  
    		int i = 1;
    		while(scan.hasNext()) {
    			String nextToken = scan.next();
    			if (nextToken.equalsIgnoreCase("a")) {
    				// how did I add from a to z to arrayList???
    			}
    			i++;
    		}
    //		System.out.print(l.showList());
     
    	}
     
    }


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Scan text and add each word alphabetical listing

    It's possible to have an ArrayList that contains an ArrayList of Strings. There could be 26 ArrayLists of Strings added to the first ArrayList, one for each letter.
    You don't want to have 26 ArrayLists named a through z.
    You don't want to work with String arrays. That is what ArrayLists are for.
    If you don't understand my answer, don't ignore it, ask a question.

  3. The Following User Says Thank You to Norm For This Useful Post:

    sydethsam (March 4th, 2014)

  4. #3
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    Default Re: Scan text and add each word alphabetical listing

    So, what would you suggest?

  5. #4
    Super Moderator Norm's Avatar
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    Default Re: Scan text and add each word alphabetical listing

    I thought I just did make some suggestions. One ArrayList that contains 26 ArrayLists of Strings.
    If you don't understand my answer, don't ignore it, ask a question.

  6. The Following User Says Thank You to Norm For This Useful Post:

    sydethsam (March 5th, 2014)

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