SetTest.java

package SetTest;

import java.util.HashSet;
import java.util.Iterator;
import java.util.Scanner;
import java.util.Set;

/**
 * Aceasta programa foloseste Seturi pentru casire grupui de cuvinte unice,
 *  citite din System.in
 * @author Dan
 *
 */
public class SetTest 
{
	public static void main(String[] args)
	{
		Set<String> words = new HashSet<String>(); //realizeaza interfaza Set
		
		long totalTime = 0;
		
		Scanner in = new Scanner(System.in);
		while(in.hasNext())
		{
			String word = in.next();
			long callTime = System.currentTimeMillis();
			words.add(word);
			callTime = System.currentTimeMillis() - callTime;
			totalTime += callTime;
		}
		
		Iterator<String> iterator = words.iterator();
		for(int i=0;i<=20;i++)
		{
			System.out.println(iterator.next());
		}
		System.out.println("...");
		System.out.println(words.size() + " distinct words " + totalTime + " milliseconds");
	}
}