From: Gunther Diemant <g.diemant@...>
Date: 2011-10-20T07:23:49+09:00
Subject: Re: why doesn't this work?

In this case, Array.new isn't needed.

IMHO a more rubyish way would be:

def find_frequency(sentence, word)
  sentence.split(/ /).select { |w| w.downcase == word.downcase }.length
end

or maybe even better:

def find_frequency(sentence, word)
  sentence.split(/ /).map { |w| w.downcase }.count(word.downcase)
end