module RomanNumerals

Public Class Methods

to_decimal(value) click to toggle source
# File lib/roman-numerals.rb, line 29
def self.to_decimal(value)
  value.upcase!
  result = 0
  @base_digits.values.reverse.each do |roman|
    while value.start_with? roman
      value = value.slice(roman.length, value.length)
      result += @base_digits.key roman
    end
  end
  result
end
to_roman(value) click to toggle source
# File lib/roman-numerals.rb, line 18
def self.to_roman(value)
  result = ''
  @base_digits.keys.reverse.each do |decimal|
    while value >= decimal
      value -= decimal
      result += @base_digits[decimal]
    end
  end
  result
end