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  1. using System;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4. using System.Text;
  5.  
  6. public class Test
  7. {
  8. 	public static void Main()
  9. 	{
  10. 	    var data = new int[] { 4, 1, 1, 3, 3, 2, 5, 3, 2, 2 };
  11. 	    var result = data.Select ((item, index) =>
  12.                             new
  13.                             {
  14.                                 Key = item,
  15.                                 Count = (index == 0 || data.ElementAt(index - 1) != item) 
  16.                                     ? data.Skip(index).TakeWhile (d => d == item).Count ()
  17.                                     : -1
  18.                             }
  19.                               )
  20.                       .Where (d => d.Count != -1);
  21.  
  22. 	    foreach(var item in result)
  23.             {
  24.                  Console.WriteLine(string.Format("{0} => {1}", item.Key, item.Count));
  25.             }
  26.         }
  27. }
Success #stdin #stdout 0.03s 37144KB
comments (?)
stdin 
Standard input is empty
stdout 
4 => 1
1 => 2
3 => 2
2 => 1
5 => 1
3 => 1
2 => 2
https://ideone.com/2rWll
language:
C# (gmcs 5.20.1)
created:
13 years ago
visibility:
secret

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