Sha256: dbde7837a513d795079b16f3141d3190553e0dd191564f70009deb2e2a143e8b
Contents?: true
Size: 435 Bytes
Versions: 16
Compression:
Stored size: 435 Bytes
Contents
module BookKeeping
VERSION = 2
end
class Binary
attr_reader :digits
def initialize(s)
fail ArgumentError.new("invalid binary input #{s}") unless valid?(s)
@digits = s.chars.reverse.collect(&:to_i)
end
def to_decimal
digits.each_with_index.inject(0) do |decimal, (digit, i)|
decimal + digit * 2**i
end
end
private
def valid?(s)
s.chars.all? { |char| ['0', '1'].include?(char) }
end
end
Version data entries
16 entries across 16 versions & 1 rubygems