module CousinRoman

Constants

FACTORS
FIVES
LITERALS
ONES
SUBTRACTIVES
VERSION

Public Class Methods

literals_for_pow(pow) click to toggle source

# File lib/cousin_roman.rb, line 42
def self.literals_for_pow(pow)
  one, five = ONES.keys[pow], FIVES.keys[pow]
  subtractives = if pow.between? 0, 2
                   skeys = SUBTRACTIVES.keys
                   { 4 => skeys[pow*2], 9 => skeys[pow*2 + 1] }
                 else
                   nil
                 end

  { one: one, five: five, subtractives: subtractives }
end