In Words to 999

gistfile1.rb

module InWords
  def in_words
      num_array = self.to_s.split("")
      num_array.collect! { |x| x.to_i }
      hundreds = ""

      if num_array.length == 3
        hundreds = "#{numbers_hash[num_array.first]} hundred "
      end

      remainder = self % 100
      remainder < 20 ? "#{hundreds + numbers_hash[remainder]}" : "#{hundreds + numbers_hash[num_array[-2] * 10]} #{numbers_hash[num_array[-1]]}"
  end

  def tens(digit)
    numbers_hash[digit]
  end

  def numbers_hash
    { 0 => "", 1 => "one", 2 => "two", 3 => "three", 4 => "four", 5 => "five", 6 => "six", 7 => "seven", 8 => "eight", 9 => "nine",
      10 => "ten", 11 => "eleven", 12 => "twelve", 13 => "thirteen", 14 => "fourteen", 15 => "fifteen", 16 => "sixteen", 17 => "seventeen",
      18 => "eighteen", 19 => "nineteen", 20 => "twenty", 30 => "thirty", 40 => "forty", 50 => "fifty", 60 => "sixty", 70 => "seventy",
      80 => "eighty", 90 =>"ninety"}
  end

end

class Numeric
  include InWords
end