class Integer


126620.to_word # => “one hundred twenty six thousand six hundred twenty”
1.to_word # => “one”
@example
numbers to words in various languages, including English.
into their word representations. It provides methods for converting
This class extends the Integer class with methods to convert numbers

def additional_tests(numbers)

For testing edge cases 
def additional_tests(numbers)
  teen_to_word(numbers)
  digit_to_word(numbers)
  tens_place_to_word(numbers)
  true
end

def append_place(word, place, numbers)

Returns:
  • (String) - The word with the appropriate place value appended.

Parameters:
  • numbers (Hash) -- A hash containing number words.
  • place (Integer) -- The place value (e.g., hundreds, thousands).
  • word (String) -- The word representation of the number. 
def append_place(word, place, numbers)
  places = numbers[:places]
  if place > 2
    word + ' ' + places[place]
  else
    word
  end
end

def digit_to_word(numbers)

Returns:
  • (String) - The word representation of the number.

Parameters:
  • numbers (Hash) -- A hash containing number words. 
def digit_to_word(numbers)
  if zero?
    ''
  else
    numbers[:digits][self]
  end
end

def hundred_to_word(place = 0, numbers)

Convert a number to its word representation for the hundreds place. 
def hundred_to_word(place = 0, numbers)
  if zero?
    ''
  elsif self < 10
    append_place(digit_to_word(numbers), place, numbers)
  elsif self < 20
    append_place(teen_to_word(numbers), place, numbers)
  elsif self < 100
    append_place(tens_place_to_word(numbers), place, numbers)
  else
    hundreds = self / 100
    tens = self % 100
    if tens.zero?
      append_place(hundreds.digit_to_word(numbers) + " #{numbers[:places][2]} and ", place, numbers)
    else
      append_place(hundreds.digit_to_word(numbers) + " #{numbers[:places][2]} and " + tens.tens_place_to_word(numbers), place,
                   numbers)
    end
  end
end

def teen_to_word(numbers)

Returns:
  • (String) - The word representation of the number.

Parameters:
  • numbers (Hash) -- A hash containing number words. 
def teen_to_word(numbers)
  if self < 10
    digit_to_word(numbers)
  elsif self < 20
    numbers[:teens][self - 10]
  else
    tens_place_to_word(numbers)
  end
end

def tens_place_to_word(numbers)

Returns:
  • (String) - The word representation of the number.

Parameters:
  • numbers (Hash) -- A hash containing number words. 
def tens_place_to_word(numbers)
  if self > 19
    tens = self / 10
    ones = self % 10
    ten = numbers[:tens][tens - 2]
    ten + (ones.zero? ? '' : ' ' + ones.digit_to_word(numbers))
  else
    teen_to_word(numbers)
  end
end

def to_word(numbers)

126620.to_word # => "one hundred twenty six thousand six hundred twenty"
1.to_word # => "one"
Turn a number into the word representation of that number. 
def to_word(numbers)
  tmp = self / 1000
  final = (self % 1000).hundred_to_word(2, numbers)
  place = 3 # special-case the tens and below
  until tmp.zero?
    final = (tmp % 1000).hundred_to_word(place, numbers) + ' ' + final
    place += 1
    tmp /= 1000
  end
  final == '' ? 'zero' : final.sub(/ and *$/, '').sub(/\s+$/, '')
end