fork download
copy 
  1. using System;
  2. using System.Collections.Generic;
  3. using System.Linq;
  4. using System.Text.RegularExpressions;
  5.  
  6. public class Test
  7. {
  8. 	public static void Main()
  9. 	{
  10. 		IEnumerable<string> titles = new string[]
  11. 	    {
  12. 	        "abc [FEAT one two] 123",
  13. 	        "def(FEAT. three'four) 456",
  14. 	        "ghi Featuring five",
  15. 	        "jkl"
  16. 	    };
  17.  
  18. 		var keys = new List<string> { "FEAT", "FEAT.", "Featuring" };
  19. 		keys = keys.OrderByDescending(x => x.Length).ToList();
  20. 		var pattern = $@"(?:{string.Join("|", keys.Select(z => Regex.Escape(z)))})\s*([^])]*)";
  21. 		Console.WriteLine(pattern);
  22.  
  23. 		var result = new List<string>();
  24. 		foreach(string title in titles)
  25. 	    {
  26. 	        var _ = Regex.Match(title, pattern);
  27.     		if (_.Success)
  28.         		result.Add(_.Groups[1].Value);
  29. 	    }
  30.  
  31. 	    Console.WriteLine( result.Count()); // Assert.AreEqual(3, result.Count());
  32. 	    Console.WriteLine( result.Contains("one two") ); //Assert.IsTrue(result.Contains("one two"));
  33. 	    Console.WriteLine( result.Contains("three'four") ); //Assert.IsTrue(result.Contains("three'four"));
  34.     	Console.WriteLine( result.Contains("five") ); // Assert.IsTrue(result.Contains("five"));
  35. 	}
  36. }
Success #stdin #stdout 0.08s 31200KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
(?:Featuring|FEAT\.|FEAT)\s*([^])]*)
3
True
True
True
https://ideone.com/jReiwq
language:
C# (gmcs 5.20.1)
created:
4 years ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!