input: Write a python function to return a list of numbers in reverse order from n to 1.
  assert reverse_list(5) == [5, 4, 3, 2, 1]
  assert reverse_list(3) == [3, 2, 1]
  assert reverse_list(1) == [1]
output: def reverse_list(n):
      return list(range(n, 0, -1))