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  1. using System;
  2. using System.Linq;
  3.  
  4. public class Test
  5. {
  6. 	public static void Main()
  7. 	{
  8. 		var l = new[] { 1, 3, 5, 1, 1, 7, 2, 7 };
  9.         var rr = l.GroupBy(v => v).Where(g => g.Count() > 1).Select(g => g.Key);
  10.         foreach (var r in rr)
  11.             Console.WriteLine(r);
  12. 	}
  13. }
Success #stdin #stdout 0.04s 34168KB
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1
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https://ideone.com/wRdues
language:
C# (gmcs 5.20.1)
created:
9 years ago
visibility:
public

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