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  1. using System;
  2. using System.Text.RegularExpressions;
  3.  
  4.  
  5. public class Test
  6. {
  7. public static void Main()
  8. {
  9.  
  10. String input = @"i General Biology i
  11. i General Biology
  12. General Biology i";
  13.  
  14. String result = Regex.Replace(input, @"(?im)^[a-z0-9]\s+|\s+[a-z0-9]$", "");
  15. Console.WriteLine(result);
  16.  
  17. }
  18. }
Success #stdin #stdout 0.08s 34064KB
stdin
Standard input is empty
stdout
General Biology
General Biology
General Biology