kaylie

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.NoSuchElementException;
import java.util.Scanner;
/**
 *
 * @author Kaylie Lu
 * @period # 5
 */

	public class CountWords
	{
		private ArrayList <Word> myWords = new ArrayList <Word>();//ArrayList of Word objects
		private String fileName = "";//The name of the file read
		private String text = "";//The file in a String
		boolean hasError = false;
		int numberOfWords = 0;//The number of total words read
		int uniqueWords = 0;//The number of unique words there are

		/**
		 * Loads the words from the text file and adds ot the ArrayList
		 * @param fName
		 */
		public CountWords(String fName){
			fileName = fName;
			loadFile(fName);

			addList(text);
			sort(myWords);
		}
			/**
			 * Reads the file and stores the contents in a myWords ArrayList.
			 * @param s The name of the file to be read.
			 */
			public void loadFile(String s ){
			try{
				Scanner sc = new Scanner(new File(s));
				if (!sc.hasNextLine())
					throw new NoSuchElementException();
				while (sc.hasNextLine()) {
					String word = sc.nextLine();
					text = text + word + " ";


				}
			}catch(IOException i){
				System.out.println("File: " + fileName);
				System.out.println("Error:" + i.getMessage());
				hasError = true;
			}
			}
			/**
			 * Private method to remove the punctuation from the list of words.
			 * @param s
			 */
			private String removePunc(String s){
				String copy = s;
				String newS= "";

		        for (int i = 0; i < copy.length(); i++) {
		            char loc = copy.charAt(i);
		            if ((loc >= 'a' && loc <= 'z')||( loc >= 'A' && loc <= 'Z')
		            || (loc >= '0' && loc <= '9')||(loc == (char)32 )||(loc == (char)39) )
		                newS += loc;
		        }
		        return newS;

			}
			/**
			 * Helper method adds words to the myWords list from a String
			 * @param s the String to be divided into words
			 */
			private void addList(String s){
				removePunc(s);
				String w = "";

		        while ((!(text.indexOf(' ')==-1))&&(text.length() > 0)) {
		            int checked,spaceIndex;
		           checked= 0;
		           spaceIndex = text.indexOf(' ');
		            w = text.substring(0, spaceIndex);
		            text = text.substring(spaceIndex + 1);

		            	if (w.indexOf("-") < 0) {

		            		Word currWord = new Word(w,0);
		            		if (!currWord.getString().equalsIgnoreCase("")) {
		                for (int i = 0; i <myWords.size(); i++) {
		                   if (currWord.equals(myWords.get(i))) {
		                       (myWords.get(i)).incrementCount();
		                       numberOfWords++;
		                       checked++;

		                        }
		                    }
		                if (checked == 0) {
		                myWords.add(currWord);
		                  numberOfWords++;
		                  uniqueWords++;


		                }
		                }
		            }
		        }
			}
			/**
			 * Prints the statistics of the myWords file.
			 */
			public void printStats(){
				if (hasError == false){
					System.out.println("File: " + fileName);
				}

				System.out.println("Total number of unique words used in the file: " + uniqueWords);
				System.out.println("Total number of words in file: " + numberOfWords);
				System.out.println("Top 30 words are: ");
				int i = 0;
				for(int j = 0; j<myWords.size();j++){
					if(i<30)
					{
						System.out.printf("%2d%6d%12s",j,myWords.get(j).getCount(),myWords.get(j).getString());
			            System.out.println();
			            i++;
			        	}
			        }
			        reset();
			    }


				/**
				 * Selection sorts the arrayList of words
			* @param words ArrayList to be sorted
			*/
			private void sort(ArrayList<Word> words) {
		   for (int i = 1; i < words.size(); i++) {
		            int pos = i;
		            Word w = words.get(pos);
		            while (pos > 0 && (words.get(pos - 1).getString().
		             toLowerCase().compareTo(w.getString().toLowerCase())) < 0) {
		                words.set(pos, words.get(pos - 1));
		                pos--;}
		            words.set(pos, w);
		}
		         for (int i = 1; i < words.size(); i++) {
		            int pos = i;
		            Word w = words.get(pos);
		            while (pos > 0 && words.get(pos - 1).compareCount(w) < 0) {
		             words.set(pos, words.get(pos- 1));
		                pos--;
		 }
		            words.set(pos, w);

		        }


	}
			/**
			 * Resets the variables for a new File
			 */
			public void reset(){
				ArrayList <Word> myWords = new ArrayList<Word>();
				String fileName = "";
				String text = "";
				numberOfWords = 0;
				uniqueWords = 0;


	}
	}