input: Write a function to sort and print out the elements of an array of integers. The function should return the sorted array.
  assert sort_and_print([17, 41, 5, 22, 54, 6, 29, 3, 13])==[3, 5, 6, 13, 17, 22, 29, 41, 54]
  assert sort_and_print([9, 8, 7, 6, 5, 4, 3, 2, 1])==[1, 2, 3, 4, 5, 6, 7, 8, 9]
  assert sort_and_print([1, 2, 3, 4, 5])==[1, 2, 3, 4, 5]
  assert sort_and_print([])==[]
  assert sort_and_print([2, 2, 2, 2])==[2, 2, 2, 2]
output: def sort_and_print(arr):
      return sorted(arr)