using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        HashSet<int> set1 = new HashSet<int>();

set1.Add(1);

set1.Add(2);

set1.Add(3);

​

HashSet<int> set2 = new HashSet<int>();

set2.Add(1);

set2.Add(2);

set2.Add(3);

        set2.Add(3);

        Console.WriteLine("==        : " + (set1 == set2 ));

        Console.WriteLine("SetEquals : " + (set1.SetEquals(set2) ));

    }

}