count.rb

sentence = <<-something
    Steven likes the movies.  Blake likes to ride his bike but hates movies.
    Blake is taller than steven.  Steven is a great teacher.
  something
  counter = Hash.new(0)
  sentence.gsub('.', '').split(' ').each do |i| counter[i] += 1 end
  counter.each do |k, v|   puts "'#{k}' appears #{v} times" if v >= 3 end