Normalize phone numbers TODO, day 5

normalize_phone_numbers.rb

def normalize_phone_number(phone)
  if phone[/a-zA-Z/] == nil
    phone.each_char do |x|
      if !(x.match(/[\d]/))
        phone.delete! x
      end
    end
    phone.insert(0, "(")
    phone.insert(4, ") ")
    phone.insert(9, "-")
    #phone = "(#{phone[0]}#{phone[1]}#{phone[2]}) #{phone[3]}#{phone[4]}#{phone[5]}-#{phone[6]}#{phone[7]}#{phone[8]}#{phone[9]}"
  else
    phone
  end
end