input: Write a function to print a list of strings in alphabetical order. The function takes a list of strings as input and prints each string in alphabetical order.
  def print_alphabetical_order(strings):
      strings.sort()
      for string in strings:
          print(string)
  
  assert print_alphabetical_order(['cat', 'dog', 'apple', 'banana'])==None
  assert print_alphabetical_order(['zebra', 'lion', 'tiger', 'elephant'])==None
  assert print_alphabetical_order([])==None
output: def print_alphabetical_order(strings):
      strings.sort()
      for string in strings:
          print(string)