using System;
//using System.Collections.Generic;
using System.Linq;
using System.Text;
using Unit4.CollectionsLib;
namespace ConsoleApplication1
{
    class Program
    {
        public static List<RangeNode> CreateRangeList(List<int> sourceList)
        {
            List<RangeNode> L = new List<RangeNode>();
            Node<int> pos1 = sourceList.GetFirst();
            Node<RangeNode> pos2 = null;
            int b = pos1.GetInfo(), f;
            while (pos1.GetNext() != null)
            {
                if (pos1.GetInfo() + 1 != pos1.GetNext().GetInfo())
                {
                    f = pos1.GetInfo();
                    pos2 = L.Insert(pos2, new RangeNode(b, f));
                    b = pos1.GetNext().GetInfo();
                }
                pos1 = pos1.GetNext();
            }
            L.Insert(pos2, new RangeNode(b, pos1.GetInfo()));
            return L;
        }













        static void Main(string[] args)
        {
        }
    }
}