static void Main(string[] args)
        {
            Console.WriteLine("Input Set A");
            IntegerSet set1 = inputset();

            Console.WriteLine("Input Set B");
            IntegerSet set2 = inputset();

            Console.WriteLine("\nSet A contains elements:");
            Console.WriteLine(set1.ToString());
            Console.WriteLine("\nSet B contains elements:");
            Console.WriteLine(set2.ToString());
            if (set1.IsEqualTo(set2))
            {
                Console.WriteLine("Set A is equal to Set B");
            }
            else
            {
                Console.WriteLine("Set A is not equal to B");
            }

            IntegerSet union = set1.Union(set2);

            Console.WriteLine("Union of set A and set B contains");
            Console.WriteLine(union.ToString());

            IntegerSet intersection = set1.Intersection(set2);

            Console.WriteLine("Intersection of set A and set B contains");
            Console.WriteLine(intersection.ToString());
            int[]      intarray = { 25, 67, 2, 9, 99, 105, 45, -5, 100, 1 };
            IntegerSet set3     = new IntegerSet(intarray);

            Console.WriteLine("New set contains");
            Console.WriteLine(set3.ToString());

            Console.WriteLine("Insert Element 77");
            set3.Insertset(77);
            Console.WriteLine("New Set Contains");
            Console.WriteLine(set3.ToString());

            Console.WriteLine("Delete Element 77");
            set3.Deleteset(77);
            Console.WriteLine("New Set Contains");
            Console.WriteLine(set3.ToString());
            Console.ReadLine();
        }