// Allison Obourn
// CSE 143 - lecture 1
// prints out tokens from a file in reverse order, removes plurals
// and demonstrates how to use ArrayLists. 

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

public class Reverse {
   public static void main(String[] args) throws FileNotFoundException {
     
      Scanner scan = new Scanner(new File("words.txt"));
      ArrayList<String> words = new ArrayList<String>();
      
      // reads words from a file
      while(scan.hasNext()) {
         words.add(scan.next());
      }
      
      // prints words from a file in reverse order
      for(int i = words.size() - 1; i >= 0; i--) {
         System.out.println(words.get(i));
      }
      
      // removes all words that end in s
      for(int i = 0; i < words.size(); i++) {
         if(words.get(i).endsWith("s")) {
            words.remove(i);
            i--;
         }
      }
      
      System.out.println(words);
      
      // creates a list of numbers demonstrating wrapper classes
      ArrayList<Integer> a = new ArrayList<Integer>();
      a.add(3);
      int b = a.get(0); 
   }
}