Convert integer to binary

itob.rb

def itob(number)
	decimals = []

	while (number.positive?)
		number, remainder = number.divmod(2)
		decimals << remainder
	end

	bits = decimals.length.times.map { |i| 2**i }
	validate_sum = 0
	decimals.each_with_index { |el, i| validate_sum += bits[i] if el.positive? }

	"Bits: #{decimals.length}, Binary: #{decimals.join}, Number: #{validate_sum}"
end

puts itob(323)
#=> Bits: 9, Binary: 110000101, Number: 323