Trinary

trinary.rb

class Trinary
  attr_reader :number
  def initialize(value)
    @number = value
  end
  def to_decimal
    return 0 if number.match(/[^0-2]/)
    converted_num = 0
      number.split('').reverse.each_with_index do |num, index|
          converted_num += num.to_i * 3 ** index
      end
    converted_num
  end
end