input: Write a python function to sort a list of integers in ascending order.
  assert sort_int_asc([3, 7, 8, 1, 5, 4]) == [1, 3, 4, 5, 7, 8]
  assert sort_int_asc([10, 2, 5, 3]) == [2, 3, 5, 10]
  assert sort_int_asc([99, 100, 55, 22]) == [22, 55, 99, 100]
output: def sort_int_asc(lst):
      return sorted(lst)