Phone # formatter!

normalize_phone_number.rb

require 'awesome_print'
require 'pry'

def normalize_phone_number number_string
  numbers_only = []
  if number_string.size >= 10
    number_string.gsub!(/\D/, '')
    number_string.each_char do |char|
      if char.to_i.is_a?(Numeric)
        numbers_only << char
      end
    end
  numbers_only.flatten!
  numbers_only = numbers_only.join
  fixed_phone_number = "(#{numbers_only.slice(0,3)}) #{numbers_only.slice(3,3)}-#{numbers_only.slice(6,4)}"
  else
    number_string
  end
end

ap normalize_phone_number "123 456 7890"
ap normalize_phone_number "1234567890"
ap normalize_phone_number "(123)4567890"
ap normalize_phone_number "123ABF90"