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  1. using static System.Console;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4.  
  5. public static class Sorteio {
  6. 	public static void Main() {
  7. 		var lista = new List<string>() { "Alaor", "Joseval", "Salustiano", "Gomide", "Castro" };
  8. 		foreach (string value in lista.Shuffle()) {
  9. 			WriteLine(value);
  10. 		}
  11. 		WriteLine("////////");
  12. 		foreach (string value in lista.Shuffle().Take(3)) {
  13. 			WriteLine(value);
  14. 		}
  15. 	}
  16. }
  17.  
  18. namespace System.Collections.Generic {
  19. 	public static class IEnumerableExt {
  20. 		static Random r = new Random(DateTime.Now.Millisecond);
  21.  
  22. 		public static IEnumerable<T> Shuffle<T>(this IEnumerable<T> list) {
  23. 			T[] array = list.ToArray();
  24. 			for (int i = array.Length - 1; i > 0; i--) {
  25. 				int j = r.Next(i + 1);
  26. 				T tmp = array[j];
  27. 				array[j] = array[i];
  28. 				array[i] = tmp;
  29. 			}
  30. 			foreach(var item in array) {
  31. 				yield return item;
  32. 			}
  33. 		}
  34. 	}
  35. }
  36.  
  37. //https://pt.stackoverflow.com/q/17783/101
Success #stdin #stdout 0.06s 18816KB
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Alaor
Gomide
Salustiano
Castro
Joseval
////////
Gomide
Joseval
Castro
https://ideone.com/6bz7lM
language:
C# (gmcs 5.20.1)
created:
3 years ago
visibility:
public

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