class NumerisRomanis
Constants
- MAP
Public Class Methods
new()
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# File lib/numeris_romanis.rb, line 7 def initialize @romans = {} (1..3999).each do |number| @romans[number] = roman_for(number) end end
Public Instance Methods
to_decimal(roman)
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# File lib/numeris_romanis.rb, line 18 def to_decimal(roman) @romans.key(roman) end
to_roman(value)
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# File lib/numeris_romanis.rb, line 14 def to_roman(value) @romans[value] end
Private Instance Methods
roman_for(value)
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# File lib/numeris_romanis.rb, line 24 def roman_for(value) conversion = '' MAP.each do |decimal, roman| result = value.divmod(decimal) conversion << roman * result.first value = result.last end conversion end