Ruby titleize is removing Hyphen, how to override?

Question

 q = ["2002-h2","2002-h1", "2000-h1", "2005-h2", "2000-h2", "2005-h1"]

 q.sort_by { |a| a }.collect{|u| u}

 => ["2000-h1", "2000-h2", "2002-h1", "2002-h2", "2005-h1", "2005-h2"]

when i'm using titleize its removing Hyphen symols

 q.sort_by { |a| a }.collect{|u| u.titleize}

 => ["2000 H1", "2000 H2", "2002 H1", "2002 H2", "2005 H1", "2005 H2"]

i want like this type

 => ["2000-H1", "2000-H2", "2002-H1", "2002-H2", "2005-H1", "2005-H2"]

i want sort q values

How to fix this one?

Answer 1

Is it just 1 letter? Then just upcase?

[1] pry(main)> "2000-h1".upcase
=> "2000-H1"

Answer 2

You can write this even shorter, because .sort_by { |a| a } returns the same than just .sort and .collect { |a| a.upcase } returns the same than .map(&:upcase)

q = ["2002-h2","2002-h1", "2000-h1", "2005-h2", "2000-h2", "2005-h1"]

q.sort.map(&:upcase)

#=> ["2000-H1", "2000-H2", "2002-H1", "2002-H2", "2005-H1", "2005-H2"]