input: Write a python function to sort an array of integers in ascending order.
  assert sort([2, 3, 1, 7, 5, 4]) == [1, 2, 3, 4, 5, 7]
  assert sort([10, 2, 8, 6, 7, 5]) == [2, 5, 6, 7, 8, 10]
  assert sort([5, 1, 4, 2, 8]) == [1, 2, 4, 5, 8]
output: def sort(arr):
      return sorted(arr)