input: Write a python function to sort a list and print its elements before and after sorting.
  assert sort_and_print([3, 4, 6, 2, 1]) == (['3', '4', '6', '2', '1'], ['1', '2', '3', '4', '6'])
  assert sort_and_print([10, 9, 8, 7, 6]) == (['10', '9', '8', '7', '6'], ['6', '7', '8', '9', '10'])
  assert sort_and_print([5, 3, 1, 2, 4]) == (['5', '3', '1', '2', '4'], ['1', '2', '3', '4', '5'])
output: def sort_and_print(lst):
      before_sort = list(map(str, lst))
      after_sort = list(map(str, sorted(lst)))
      return before_sort, after_sort