// CSE 143, Winter 2011, Marty Stepp
// This program demonstrates the ArrayList class.
// It reads words from a file "words.txt" into an array list, then prints them,
// then filters out all of the plural words and prints again.

import java.io.*;
import java.util.*;

public class ProcessFile {
    public static void main(String[] args) throws FileNotFoundException {
        // String[] words = new String[5];
        // int count = 0;
        ArrayList<String> list = readFile("words.txt");
        
//        System.out.println(list);
//        System.out.println("This file has " + list.size() + " words.");
//        list.add(2, "Jessica");
//        System.out.println(list);
//        System.out.println("The first word is " + list.get(0));
        
        System.out.println("'the' is found at index " + list.indexOf("the"));
        printBackwards(list);
    }
    
    public static ArrayList<String> readFile(String fileName) throws FileNotFoundException {
        ArrayList<String> list = new ArrayList<String>();
        Scanner input = new Scanner(new File(fileName));
        while (input.hasNext()) {
            String word = input.next();
            list.add(word);
        }
        return list;
    }
    
    public static void printBackwards(ArrayList<String> list) {
        for (int i = list.size() - 1; i >= 0; i--) {
            String word = list.get(i);
            System.out.println(word);
        }
    }
}