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  1. using System;
  2. using System.Text.RegularExpressions;
  3.  
  4. public class Test
  5. {
  6. 	public static void Main()
  7. 	{
  8.         string pattern = @"^((?(D)(?!))(?<C>1)|(?(D)(?!))(?<-C>0)|(?(C)(?!))(?<D>0)|(?(C)(?!))(?<-D>1))*(?(C)(?!))(?(D)(?!))$";
  9.  
  10.         string[] matchedStrings = new[] { "1100", "1010", "0101", "11000011" };
  11.         string[] unmatchedStrings = new[] { "110", "001", "1100001" };
  12.  
  13.         foreach (var s in matchedStrings)            
  14.             Console.WriteLine("Should matching {0}: {1}", s, Regex.IsMatch(s, pattern));
  15.         foreach (var s in unmatchedStrings)
  16.             Console.WriteLine("Should not matching {0}: {1}", s, !Regex.IsMatch(s, pattern));     
  17. 	}
  18. }
Success #stdin #stdout 0.07s 34064KB
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stdin
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Standard input is empty
stdout
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Should matching 1100: True
Should matching 1010: True
Should matching 0101: True
Should matching 11000011: True
Should not matching 110: True
Should not matching 001: True
Should not matching 1100001: True
https://ideone.com/F6ZJOi
language:
C# (gmcs 5.20.1)
created:
11 years ago
visibility:
public

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