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  1. using System;
  2. using System.Collections.Generic;
  3.  
  4. public static class TestExtensions
  5. {
  6. 	public static IEnumerable<List<T>> GroupsOf<T>(this IEnumerable<T> sequence, int count)
  7. 	{
  8. 		if (sequence == null)
  9. 		{
  10. 			throw new ArgumentNullException("sequence");
  11. 		}
  12.  
  13. 		return GroupsOfImpl<T>(sequence, count);
  14. 	}
  15.  
  16. 	private static IEnumerable<List<T>> GroupsOfImpl<T>(IEnumerable<T> sequence, int count)
  17. 	{
  18. 		List<T> answer = new List<T>(count);
  19. 		foreach (T element in sequence)
  20. 		{
  21. 			answer.Add(element);
  22. 			if (answer.Count == count)
  23. 			{
  24. 				yield return answer;
  25. 				answer = new List<T>(count);
  26. 			}
  27. 		}
  28.  
  29. 		if (answer.Count != 0)
  30. 		{
  31. 			yield return answer;
  32. 		}
  33. 	}
  34. }
  35.  
  36. public class Test
  37. {
  38. 	public static void Main()
  39. 	{
  40. 		var input = new List<int>{1, 2, 3, 3, 2, 1, 0, 4};
  41. 		foreach (List<int> chunk in input.GroupsOf(3))
  42. 		{
  43. 			foreach (int element in chunk)
  44. 			{
  45. 				Console.WriteLine(element);
  46. 			}
  47.  
  48. 			Console.WriteLine("End Group!");
  49. 			Console.WriteLine();
  50. 		}
  51. 	}
  52. }
Success #stdin #stdout 0.04s 23960KB
comments (?)
stdin 
Standard input is empty
stdout 
1
2
3
End Group!

3
2
1
End Group!

0
4
End Group!
https://ideone.com/Z4mNWp
language:
C# (gmcs 5.20.1)
created:
10 years ago
visibility:
public

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