Using Ruby convert numbers to words?

Question

How to convert numbers to words in ruby?

I know there is a gem somewhere. Trying to implement it without a gem. I just need the numbers to words in English for integ

Answer 1

def subhundred number

  ones = %w{zero one two three four five six seven eight nine
            ten eleven twelve thirteen fourteen fifteen
            sixteen seventeen eighteen nineteen}

  tens = %w{zero ten twenty thirty **forty** fifty sixty seventy eighty ninety}

  subhundred = number % 100

  return [ones[subhundred]] if subhundred < 20

  return [tens[subhundred / 10]] if subhundred % 10 == 0

  return [tens[subhundred / 10], ones[subhundred % 10]]

end




def subthousand number

  hundreds = (number % 1000) / 100

  tens = number % 100

  s = []

  s = subhundred(hundreds) + ["hundred"] unless hundreds == 0

  s = s + ["and"] unless hundreds == 0 or tens == 0

  s = s + [subhundred(tens)] unless tens == 0


end




def decimals number

  return [] unless number.to_s['.']

  digits = number.to_s.split('.')[1].split('').reverse

  digits = digits.drop_while {|d| d.to_i == 0} . reverse

  digits = digits.map {|d| subhundred d.to_i} . flatten

  digits.empty? ? [] : ["and cents"] + digits

end





def words_from_numbers number

  steps = [""] + %w{thousand million billion trillion quadrillion quintillion sextillion}

  result = []

  n = number.to_i

  steps.each do |step|

    x = n % 1000

    unit = (step == "") ? [] : [step]

    result = subthousand(x) + unit  + result unless x == 0

    n = n / 1000

  end



  result = ["zero"] if result.empty?

  result = result + decimals(number)




  result.join(' ').strip

end






 def words_from_numbers(number)

    ApplicationHelper.words_from_numbers(number)

  end

Answer 2

You can also use the to_words gem.

This Gem converts integers into words.

e.g.

1.to_words # one ,

100.to_words # one hundred ,

101.to_words # one hundred and one

It also converts negative numbers.