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Versions: 339
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Contents
module BookKeeping
VERSION = 2
end
class BaseConverter
def self.convert(base_from, number_array, base_to)
fail ArgumentError if invalid_inputs?(base_from, number_array, base_to)
return [] unless number_array.any?
number_in_canonical_base = convert_to_canonical_base(number_array, base_from)
convert_from_canonical_base(number_in_canonical_base, base_to)
end
private_class_method
def self.invalid_inputs?(base_from, number_array, base_to)
number_array.any? { |number| number < 0 || number >= base_from } ||
base_from <= 1 || base_to <= 1
end
def self.convert_to_canonical_base(number_array, base)
total = 0
number_array.reverse.each_with_index do |number, index|
total += number * base**index
end
total
end
def self.convert_from_canonical_base(number, base_to)
result = []
current_number = number
while current_number >= base_to
result << current_number % base_to
current_number /= base_to
end
result << current_number % base_to
result.reverse
end
end
Version data entries
339 entries across 339 versions & 1 rubygems