fork(11) download
copy 
  1. using System;
  2. using System.Text.RegularExpressions;
  3.  
  4. public class Test
  5. {
  6. 	public static void Main(){
  7.  
  8. 		string[] tests = {
  9. 			// matching
  10. 			"2",
  11. 			"1 AND 2",
  12. 			"12 OR 234",
  13. 			"(1) AND (2)",
  14. 			"(((1)) AND (2))",
  15. 			"1 AND 2 AND 3",
  16. 			"1 AND (2 OR (3 AND 4))",
  17. 			"1 AND (2 OR 3) AND 4",
  18. 			" ( 1    AND ( 2 OR  ( 3 AND    4 )  )",
  19. 			"((1 AND 7) OR 6) AND ((2 AND 5) OR (3 AND 4))",
  20. 			"(1)",
  21. 			"(((1)))",
  22.  
  23. 			// should fail
  24. 			"1 2",
  25. 			"1(2)",
  26. 			"(1)(2)",
  27. 			"AND",
  28. 			"1 AND",
  29. 			"(1 AND 2",
  30. 			"1 AND 2)",
  31. 			"1 (AND) 2",
  32. 			"(1 AND 2))",
  33. 			"(1) AND 2)",
  34. 			"(1)() AND (2)",
  35. 			"((1 AND 7) OR 6) AND (2 AND 5) OR (3 AND 4))",
  36. 			"((1 AND 7) OR 6) AND ((2 AND 5 OR (3 AND 4))",
  37. 			""
  38. 			};
  39.  
  40. 		string re = @"(?x)^
  41. 			\s* (?: (?<open> \( ) \s* )*
  42. 			\d+
  43. 			\s* (?: (?<-open> \) ) \s* )*
  44. 			(?:
  45. 				\s+(?:AND|OR)\s+
  46. 				\s* (?: (?<open> \( ) \s* )*
  47. 				\d+
  48. 				\s* (?: (?<-open> \) ) \s* )*
  49. 			)*
  50. 			(?(open)(?!))
  51. 			\z";
  52.  
  53. 		foreach (string str in tests){
  54. 			Match match = Regex.Match(str, re);
  55. 			if (match.Success)
  56. 				Console.WriteLine("matched: '{0}'", str);
  57. 			else
  58. 				Console.WriteLine("failed:  '{0}'", str); 
  59. 		}
  60. 	}
  61. }
Success #stdin #stdout 0.08s 37256KB
comments (?)
stdin
copy 


			

					
			
			

				
	
		
		
	
		
		 stdout
					

				
				 copy
			

			
	

		
matched: '2'
matched: '1 AND 2'
matched: '12 OR 234'
matched: '(1) AND (2)'
matched: '(((1)) AND (2))'
matched: '1 AND 2 AND 3'
matched: '1 AND (2 OR (3 AND 4))'
matched: '1 AND (2 OR 3) AND 4'
matched: ' ( 1    AND ( 2 OR  ( 3 AND    4 )  )'
matched: '((1 AND 7) OR 6) AND ((2 AND 5) OR (3 AND 4))'
matched: '(1)'
matched: '(((1)))'
failed:  '1 2'
failed:  '1(2)'
failed:  '(1)(2)'
failed:  'AND'
failed:  '1 AND'
failed:  '(1 AND 2'
failed:  '1 AND 2)'
failed:  '1 (AND) 2'
failed:  '(1 AND 2))'
failed:  '(1) AND 2)'
failed:  '(1)() AND (2)'
failed:  '((1 AND 7) OR 6) AND (2 AND 5) OR (3 AND 4))'
failed:  '((1 AND 7) OR 6) AND ((2 AND 5 OR (3 AND 4))'
failed:  ''


	

		
	 
	
	
			

					
			
			
			
			
			
			
			
			

			
			
			
		

	
		
		

			

			                        







			
			

				

	
					
					 https://ideone.com/wzDZq
					
					
					
					
					

												

												
						
						

					

					
					
					

						
language:

						
C# (gmcs 5.20.1)

					

					

						
created:
								
						
12 years ago

					

					

						
visibility:

						

							 public																												
							
							

								
							

						

					

										
										

					
					 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!