input: Write a python function to sort an array of numbers in ascending order.
  assert sort_in_ascending([3, 5, 1, 6, 9, 4]) == [1, 3, 4, 5, 6, 9]
  assert sort_in_ascending([10, 2, 33, 25, 6, 7]) == [2, 6, 7, 10, 25, 33]
  assert sort_in_ascending([-5, -1, 0, 3, 2, -3]) == [-5, -3, -1, 0, 2, 3]
output: def sort_in_ascending(arr):
      return sorted(arr)