// CSE 143, Winter 2010, Marty Stepp
// This program demonstrates the ArrayList class.
// It reads words from a file 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[] allWords = new String[1000];
        ArrayList<String> allWords = new ArrayList<String>();
        
        Scanner input = new Scanner(new File("words.txt"));
        while (input.hasNext()) {
            String word = input.next();
            allWords.add(word);
        }
        
        System.out.println(allWords);
        
        for (int i = 0; i < allWords.size(); i++) {
            String word = allWords.get(i);
            if (word.endsWith("s")) {
                allWords.remove(i);
                i--;
            }
        }
        
//        // alternate version that goes from the back of the list
//        for (int i = allWords.size() - 1; i >= 0; i--) {
//            String word = allWords.get(i);
//            if (word.endsWith("s")) {
//                allWords.remove(i);
//            }
//        }
        
        System.out.println(allWords);
        
        /*
        // some other code we wrote to play with the list
        
        // print the list in reverse order
        for (int i = allWords.size() - 1; i >= 0; i--) {
            System.out.println(allWords.get(i));
        }
        
        // add and remove some elements
        allWords.remove(2);
        System.out.println(allWords);
        allWords.add(5, "booyah");
        System.out.println(allWords);
        
        // swap two elements
        String temp = allWords.get(0);
        allWords.set(0, allWords.get(7));
        allWords.set(7, temp);
        System.out.println(allWords);
        */
    }
}