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  1. class String
  2.   def rgsub(pattern, replace)
  3.     s = gsub(pattern, replace)
  4.     self == s ? s : s.rgsub(pattern, replace)
  5.   end
  6. end
  7. def f9583(s)
  8.   s.size.odd? ? -1 : s.rgsub('()','').gsub(/\(\(|\)\)/,'*').size
  9. end
  10. a = %w[
  11. )
  12. ())())
  13. )()()(
  14. )))(((
  15. (())())((())(()(
  16. ())((())()))()(((()))()((((((((()()(()))
  17. ]
  18. p a.map {|s| [s, f9583(s)]}
  19.  
Success #stdin #stdout 0.01s 28216KB
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[[")", -1], ["())())", 1], [")()()(", 2], [")))(((", 4], ["(())())((())(()(", 3], ["())((())()))()(((()))()((((((((()()(()))", 5]]
https://ideone.com/jGTfL3
language:
Ruby (ruby 2.5.5)
created:
6 years ago
visibility:
public

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