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  1. using System;
  2. using System.Linq;
  3.  
  4. public class Test
  5. {
  6. 	public static void Main()
  7. 	{
  8. 		string input = " aa aaa aaaa  bb bbb bbbb cc ccc cccc cccc ";
  9.  		var words = input.Split((char[])null, StringSplitOptions.RemoveEmptyEntries).Distinct();
  10.  		var lookup = words.ToLookup(s => s.Length);
  11.  		foreach (var group in lookup)
  12.  		{
  13.  			Console.WriteLine(string.Join(", ", group.ToArray()));
  14.  		}
  15. 	}
  16. }
Success #stdin #stdout 0.05s 37176KB
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stdin
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Standard input is empty
stdout
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aa, bb, cc
aaa, bbb, ccc
aaaa, bbbb, cccc
https://ideone.com/HyDAE
language:
C# (gmcs 5.20.1)
created:
11 years ago
visibility:
secret

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