lortest.rb

katz_deli = []

def take_a_number(deli_line, customer)
  deli_line << customer
  deli_line.index(customer) + 1
end

def now_serving(deli_line)
  "Currently serving #{deli_line[0]}"
  deli_line.shift
end

def line(deli_line)
  deli_line.map! { |client| "#{deli_line.index(client) + 1}. #{client}"}
  "Currently serving #{deli_line.join(" ")}"
end