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  1. using System;
  2. using System.Globalization;
  3. using System.Linq;
  4. using System.Collections.Generic;
  5.  
  6. public class Test
  7. {
  8.  
  9.  
  10. 	public static void Main()
  11. 	{
  12.         string input = "   a.1.2.3 #4567   ";
  13.         int poundIndex = input.IndexOf("#");
  14.         if(poundIndex >= 0)
  15.         {
  16.             string relevantPart = input.Substring(0, poundIndex).Trim();
  17.             IEnumerable<Char> numPart = relevantPart
  18.                 .SkipWhile(c => !Char.IsDigit(c));
  19.             string result = new string(numPart.ToArray());
  20.             Console.Write(result);
  21.         }
  22. 	}
  23. }
Success #stdin #stdout 0.05s 33944KB
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Standard input is empty
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1.2.3
https://ideone.com/FnKAok
language:
C# (gmcs 5.20.1)
created:
12 years ago
visibility:
public

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