// CSE 143, Winter 2009, Marty Stepp
//
// This program counts the unique words in a large file and lets the
// user search for words in that file.
// It demonstrates the use of a Set collection.

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

public class WordCount {
    public static void main(String[] args) throws FileNotFoundException {
        // timer to see how long the program takes to run
        long startTime = System.currentTimeMillis();

        // read file into a collection
        Set<String> words = new HashSet<String>();
        
        System.out.println("Reading file...");
        Scanner input = new Scanner(new File("mobydick.txt"));
        while (input.hasNext()) {
            String word = input.next();
            if (!words.contains(word)) {
                words.add(word);
            }
        }
        
        System.out.println(words.size() + " unique words total.");
        long endTime = System.currentTimeMillis();
        System.out.println((endTime - startTime) + " ms elapsed.");
        
        for (String word : words) {
            if (word.endsWith("s")) {
                System.out.println(word);
            }
        }
    }
}