Another Mark_twain recursive example

gistfile1.rb

class String
 def mark_twain
     self.mark_twain_helper([])
 end

 def mark_twain_helper(drafts)
       words = self.split(' ')
     if words.length > 1
        drafts << "Draft: #{words[0..words.length].join(" ")}."
        words[0..words.length-2].join(" ").mark_twain_helper(drafts)
     else
       drafts << "Final draft: #{words[0]}."
       drafts
     end
   end
end


"hey how are you.".mark_twain
drafts = []
words = [hey, how, are, you.]
drafts =  ["Draft: hey how are you."]

#----2nd Time-----

"hey how are".mark_twain
words = [hey, how, are]
drafts =  ["Draft: hey how are you.", "Draft: hey how are."]

#----3rd Time----

"hey how".mark_twain
words = [hey, how]
drafts =  ["Draft: hey how are you.", "Draft: hey how are.", "Draft: Hey how."]

#----4th Time----
"hey".mark_twain
words = [hey]
drafts = ["Draft: hey how are you.", "Draft: hey how are.", "Draft: Hey how.", "Final: Hey."]

=> ["Draft: hey how are you.", "Draft: hey how are.", "Draft: Hey how.", "Final: Hey."]