input: Write a function to sort the given list of words in alphabetical order and print the sorted list.
  assert sort_words(['bubble', 'selection', 'quicksort', 'insertion'])==['bubble', 'insertion', 'quicksort', 'selection']
  assert sort_words(['algorithm', 'word', 'sort', 'list'])==['algorithm', 'list', 'sort', 'word']
  assert sort_words(['a', 'b', 'c', 'd'])==['a', 'b', 'c', 'd']
  assert sort_words(['zebra', 'apple', 'dog', 'cat'])==['apple', 'cat', 'dog', 'zebra']
  assert sort_words([])==[]
output: def sort_words(words):
      return sorted(words)