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  1. using System;
  2. using System.Collections.Generic;
  3. using System.IO;
  4. using System.Linq;
  5. using System.Text.RegularExpressions;
  6.  
  7. public class Test
  8. {
  9. 	public static void Main()
  10. 	{
  11. 		var strings = new List<string> { "1 abcd", "abcd 1", "1 abcd 1"};
  12. 		var pattern = "(^)?abcd(?(1)|$)";
  13.         foreach (var s in strings)
  14.         {
  15.         	Console.WriteLine("{0} => {1}", s, Regex.IsMatch(s, pattern));
  16.         }
  17. 	}
  18. }
Success #stdin #stdout 0.05s 20964KB
comments (?)
stdin
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Standard input is empty
stdout
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1 abcd => True
abcd 1 => True
1 abcd 1 => False
https://ideone.com/EXpSao
language:
C# (gmcs 5.20.1)
created:
4 years ago
visibility:
secret

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