Ruby binary gap of an Integer

binary_gap.rb

def bin_gap(number)
  bin = number.to_s(2) # convert number to binary
  zeros = bin.split('1') # extract 0's in binary
  zeros.reject(&:empty?) # remove if any empty elements
  zeros.pop if number % 2 == 0 # pop out last 0's
  
  return 0 if zeros.empty? 
  zeros.map{ |zero| zero.length }.max # max length from 0's array
end