input: Write a function to output the top 3 numbers from an array of integers. If the array has fewer than 3 elements, return the maximum number of elements available.
  
  def top_three(numbers):
      sorted_numbers = sorted(numbers, reverse=True)
      return sorted_numbers[:3]
  
  assert top_three([7, 13, 5, 8, 50, 11, 64, 48]) == [64, 50, 48]
  assert top_three([1, 2]) == [2, 1]
  assert top_three([5, 10, 15, 20, 25]) == [25, 20, 15]
  assert top_three([]) == []
  assert top_three([100]) == [100]
output: def top_three(numbers):
      sorted_numbers = sorted(numbers, reverse=True)
      return sorted_numbers[:3]