using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

    public static bool IsExist(Node lst, int n)

    {

        Node P = lst;

        while(P.HasNext())  

        {

            if(P.GetValue() == n)

            {

                return true;

            }

        }

        return false;

    }

    public static Node RemoveDuplicate(Node lst)

    {

        Node P = lst;

        Node lst1=null, p1 = null, N;

        while(P!=null)

        {

            if(!IsExist(lst1, P.GetValue()))

            {

                N = new Node(P.GetValue())

                if(lst1 == null)

                {

                    lst1 = N;

                    p1 = N;

                }

                else

                {

                    p1.SetNext(N);

                    p1=N;

                }

            }

        P = P.GetNext();

        }

        return lst1;

    }       

}

​