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  1. using System;
  2. using System.Collections.Generic;
  3.  
  4. public class Test
  5. {
  6. 	public static void Main()
  7. 	{
  8. 		var list = new PositiveNegativeList<string>();
  9. 		list.Add("test");
  10. 		Console.WriteLine(list[0]);
  11. 	}
  12. }
  13.  
  14.     public class PositiveNegativeList<T>
  15.     {
  16.         List<T> PositiveList;
  17.         List<T> NegativeList;
  18.  
  19.         public PositiveNegativeList()
  20.         {
  21.              PositiveList = new List<T>();
  22.              NegativeList = new List<T>();
  23.         }
  24.  
  25.         public T this[int index]
  26.         {
  27.             get
  28.             {
  29.                 if (index < 0)
  30.                    return NegativeList[index * -1];
  31.                 else
  32.                    return PositiveList[index];
  33.             }
  34.  
  35.             set
  36.             {
  37.                 if (index < 0)
  38.                    NegativeList[index * -1] = value;
  39.                 else
  40.                    PositiveList[index] = value;
  41.             }
  42.         }
  43.  
  44.         public void Add(T item)
  45.         {
  46.             PositiveList.Add(item);
  47.         }
  48.     }
  49.  
Success #stdin #stdout 0.02s 33912KB
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test
https://ideone.com/A3klm1
language:
C# (gmcs 5.20.1)
created:
10 years ago
visibility:
public

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