Module: ToWords

Included in:

Fixnum

Defined in:

lib/to_words.rb,
lib/to_words/version.rb

Constant Summary

UNDER_HUNDRED =

{""=>"", 0=>"zero", 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", 21=>"twenty one", 22=>"twenty two", 23=>"twenty three", 24=>"twenty four", 25=>"twenty five", 26=>"twenty six", 27=>"twenty seven", 28=>"twenty eight", 29=>"twenty nine", 30=>"thirty", 31=>"thirty one", 32=>"thirty two", 33=>"thirty three", 34=>"thirty four", 35=>"thirty five", 36=>"thirty six", 37=>"thirty seven", 38=>"thirty eight", 39=>"thirty nine", 40=>"forty", 41=>"forty one", 42=>"forty two", 43=>"forty three", 44=>"forty four", 45=>"forty five", 46=>"forty six", 47=>"forty seven", 48=>"forty eight", 49=>"forty nine", 50=>"fifty", 51=>"fifty one", 52=>"fifty two", 53=>"fifty three", 54=>"fifty four", 55=>"fifty five", 56=>"fifty six", 57=>"fifty seven", 58=>"fifty eight", 59=>"fifty nine", 60=>"sixty", 61=>"sixty one", 62=>"sixty two", 63=>"sixty three", 64=>"sixty four", 65=>"sixty five", 66=>"sixty six", 67=>"sixty seven", 68=>"sixty eight", 69=>"sixty nine", 70=>"seventy", 71=>"seventy one", 72=>"seventy two", 73=>"seventy three", 74=>"seventy four", 75=>"seventy five", 76=>"seventy six", 77=>"seventy seven", 78=>"seventy eight", 79=>"seventy nine", 80=>"eighty", 81=>"eighty one", 82=>"eighty two", 83=>"eighty three", 84=>"eighty four", 85=>"eighty five", 86=>"eighty six", 87=>"eighty seven", 88=>"eighty eight", 89=>"eighty nine", 90=>"ninety", 91=>"ninety one", 92=>"ninety two", 93=>"ninety three", 94=>"ninety four", 95=>"ninety five", 96=>"ninety six", 97=>"ninety seven", 98=>"ninety eight", 99=>"ninety nine", 100=>"one hundred"}

DIVISIONS =

["", "Thousand", "Million", "Billion", "Trillion", "Quadrillion", "Quintrillion"]

VERSION =

"1.0.0"

Instance Method Summary

• #result_below_one_thousand(num, counter) ⇒ Object
• #to_words ⇒ Object

Instance Method Details

#result_below_one_thousand(num, counter) ⇒ Object

# File 'lib/to_words.rb', line 22

def result_below_one_thousand(num, counter)
  hundred, remaining = num.divmod(100)
  return UNDER_HUNDRED[hundred] + " Hundred " + UNDER_HUNDRED[remaining]     if hundred != 0 && remaining != 0 && counter != 0
  return UNDER_HUNDRED[hundred] + " Hundred and " + UNDER_HUNDRED[remaining] if hundred != 0 && remaining != 0
  return UNDER_HUNDRED[remaining]                                            if hundred == 0 && remaining != 0
  return UNDER_HUNDRED[hundred] + " Hundred "                                if hundred != 0 && remaining == 0
  return ''
end

#to_words ⇒ Object

# File 'lib/to_words.rb', line 8

def to_words
  num = self.to_i
  return UNDER_HUNDRED[num] if num <= 100
  counter = 0
  result = []
  while num != 0
    num, remaining = num.divmod(1000)
    temp_result = result_below_one_thousand(remaining, counter)
    result << temp_result + " " + DIVISIONS[counter] + " " if temp_result != ''
    counter += 1
  end
  return result.reverse.join(", ").rstrip
end