​

/*

Question : 

​

Part 1) Write a function to reverse a Linked List.

        Ex: list = 1 -> 2 -> 3 -> NULL,  Result = 3 -> 2 -> 1 -> NULL

Part 2) Write a function to return sum of 2 numbers represented in the form of a linked list.

        Ex: num1 = 9 -> 9 -> NULL,  num2 = 2 -> 3 -> NULL,  Result = 1 -> 2 -> 2 -> NULL. 

*/

using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

}

​

​

// Helper class.

public class Node

{

    public int Info {get; set;}

    public Node Next {get; set;}

    public Node(int info)

    {

        Info = info;

        Next = null;

    }

    public static void Display(Node start)

    {

        Node temp = start;

        while(temp != null)

        {

            Console.Write($"{temp.Info} -> ");

            temp = temp.Next;

        }

        Console.WriteLine("NULL");

    }

}