Search

def top_3_words(text)
  text
  .split(/\s+/)
  .inject(Hash.new(0)) { |key, val| key[val.downcase] += 1; key }
  .sort_by { |key, val| val }
  .collect! { |v, k| v }
  .reject(&:empty?)
  .select { |e| e =~ /\w/i }
   .reverse
   .first(3)
end