Node

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace nodeTest
{
    class Program
    {
        public static void printList(Node<int> ls)
        {
            Node<int> pos1 = ls;
            while (pos1 != null)
            {
                Console.WriteLine(pos1.GetValue());
                pos1 = pos1.GetNext();
            }
        }
        public static Node<int> qu1(Node<int> list1, int max)
        {
            Node<int> newList = new Node<int>(1);
            Node<int> newPos = newList;
            for(int i=2;i< max; i++)
            {
                Node<int> pos1 = list1;
                bool found = false;
                while (pos1 != null)
                {
                    if (pos1.GetValue() == i)
                    {
                        found = true;
                    }
                    pos1 = pos1.GetNext();
                }
                if (!found)
                {
                    newPos.SetNext(new Node<int>(i));
                    newPos = newPos.GetNext();
                }
            }
            return newList;
        }
        public static Node<int> qu2(Node<int> L)
        {
            Node<int> Lpos = L;
            Node<int> newList = new Node<int>(0);
            Node<int> newPos = newList;

            int sum = 0;
            int lastNumber = 0;
            while (Lpos != null)
            {
                int value = Lpos.GetValue();
                if (value > lastNumber)
                {
                    sum += value;
                    lastNumber = value;
                }
                else
                {
                    newPos.SetValue(sum);
                    newPos.SetNext(new Node<int>(0));
                    newPos = newPos.GetNext();
                    sum = 0;
                    lastNumber = 0;
                }
                Lpos = Lpos.GetNext();
            }
            return newList;
        }
        static void Main(string[] args)
        {
            int value = int.Parse(Console.ReadLine());
            Node<int> ls = new Node<int>(value);
            Node<int> pos = ls;
            value = int.Parse(Console.ReadLine());
            while (value!=999)
            {
                pos.SetNext(new Node<int>(value));
                pos = pos.GetNext();
                value = int.Parse(Console.ReadLine());
            }
            Console.WriteLine("original Node:");
            printList(ls);
            Console.WriteLine("after qu2:");
            printList(qu2(ls));
        }
    }
}