Class: RomanNums::Solver

Inherits:
Object
  • Object
show all
Defined in:
lib/roman_nums/solver.rb

Instance Method Summary collapse

Instance Method Details

#convert(args = {}) ⇒ Object 



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# File 'lib/roman_nums/solver.rb', line 5

def convert(args = {})
  arabic_nums = args.fetch(:arabic_nums, nil)

  if !arabic_nums.present?
    arabic_nums = sample_arabic_nums
  else
    if arabic_nums.is_a?(::String)
      arabic_nums = arabic_nums.scan(/\d+/)
      arabic_nums.map! { |num| num.to_i }
    end
  end

  roman_nums = arabic_nums.map { |num| convert_to_modern(num) }
end

#convert_to_modern(arabic) ⇒ Object 



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# File 'lib/roman_nums/solver.rb', line 53

def convert_to_modern(arabic)
  classic_rom = to_classic(arabic)
  modern_conversions = {'DCCCC'=> 'CM', 'CCCC'=> 'CD', 'LXXXX'=> 'XC', 'XXXX'=> 'XL', 'VIIII'=> 'IX', 'IIII'=> 'IV'}

  modern_rom = classic_rom
  modern_conversions.each do |k,v|
    if classic_rom.include?(k)
      modern_conversions = classic_rom.gsub(k,v)
    end
  end

  same = false if modern_rom == classic_rom
  converted_hsh = { arabic: arabic,
                    classic_rom: classic_rom,
                    modern_rom: modern_rom,
                    same: same || true
                  }
end

#sample_arabic_nums ⇒ Object 



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# File 'lib/roman_nums/solver.rb', line 72

def sample_arabic_nums
  numbers = (0..20).map { rand(999..9999) }
end

#to_classic(arabic) ⇒ Object 



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# File 'lib/roman_nums/solver.rb', line 21

def to_classic(arabic)
  answer = arabic / 1000 # 1
  remainder = arabic % 1000 # 1
  thousands = "M" * answer

  answer = remainder / 500 # 1
  remainder = arabic % 500 # 1
  five_hundreds = "D" * answer

  answer = remainder / 100 # 1
  remainder = arabic % 100 # 1
  hundreds = "C" * answer

  answer = remainder / 50 # 1
  remainder = arabic % 50 # 1
  fifties = "L" * answer

  answer = remainder / 10 # 1 top of logic
  remainder = arabic % 10 # 6
  tens = "X" * answer

  answer = remainder / 5 # 1
  remainder = arabic % 5 # 1
  fives = "V" * answer

  answer_n = remainder / 1 #
  ones = "I" * answer_n

  roman_num = thousands + five_hundreds + hundreds + fifties + tens + fives + ones
end