Random Sentence Generator in Ruby : How to randomly select values on specific key in hash?

Question

I\'m working on a Ruby verison of RSG and somehow stuck on the sentence generating process (...)

so I managed to implement all functions like read, convert to hash...,et

Answer 1

Code

def generate(hash, start_key)
  mod_hash = hash.transform_values{ |v| v.map { |a| a.join(' ') } }
  sentence = mod_hash[start_key].sample
  while sentence.include?('<')
    sentence.gsub!(/\<.+?\>/) { |s| mod_hash[s].sample }
  end
  sentence
end  

Examples

hash = { "" =>[["The", "