fork download
  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 pattern = "a[^b]+b|^[^b]+b";
  12. var result = Regex.Match("123412a123b", pattern, RegexOptions.RightToLeft);
  13. if (result.Success)
  14. Console.WriteLine(result.Value);
  15. }
  16. }
Success #stdin #stdout 0.03s 133824KB
stdin
Standard input is empty
stdout
a123b