input: 
  def get_stats_for_string(string):
      num_elements = len(string)
      max_element = max(string)
      min_element = min(string)
      mean_element = sum(string) / num_elements
      return (max_element, min_element, mean_element)
  
  # Test cases
  >>> get_stats_for_string("abcdef")
  ('f', 'a', 100.0)
  >>> get_stats_for_string("12345")
  ('5', '1', 256.2)
  
output:     num_elements = len(string)
      max_element = max(string)
      min_element = min(string)
      mean_element = sum(ord(char) for char in string) / num_elements
      return (max_element, min_element, mean_element)