input: from typing import List
  
  def positive_feedback_loop(iterations: int) -> List[str]:
      """Design a positive feedback loop for the given number of iterations. 
      For each iteration print "hello". If the iteration count reaches the given number of iterations, print "You've got it!".
      >>> positive_feedback_loop(10)
      ["hello", "hello", "hello", "hello", "hello", "hello", "hello", "hello", "hello", "hello", "You've got it!"]
      >>> positive_feedback_loop(0)
      []
      """
output:     result = []
      for i in range(iterations):
          result.append("hello")
      if iterations > 0:
          result.append("You've got it!")
      return result