input: def sort_and_print_strings(strings: List[str]):
      """Sort a list of strings in alphabetical order and print each string.
      >>> sort_and_print_strings(['cat', 'dog', 'apple', 'banana'])
      apple
      banana
      cat
      dog
      """
      strings.sort()
      for string in strings:
          print(string)
output:     strings.sort()
      for string in strings:
          print(string)