input: Write a python function to check if a list of numbers is sorted in ascending order.
  assert is_sorted_asc([1, 2, 3, 4, 5]) == True
  assert is_sorted_asc([5, 4, 3, 2, 1]) == False
  assert is_sorted_asc([1, 3, 2, 4, 5]) == False
  assert is_sorted_asc([1, 2, 2, 3, 4]) == True
output: def is_sorted_asc(lst):
      return all(lst[i] <= lst[i+1] for i in range(len(lst)-1))