* Typos in comments in hill_climbing.py * fixup! Format Python code with psf/black push
* Create deque_doubly.py Implementing Deque ADT using Doubly Linked List.... * Update deque_doubly.py * Update deque_doubly.py Adding doctest * Update doctest of deque_doubly.py * Update deque_doubly.py * linked_list. Co-authored-by: Christian Clauss <cclauss@me.com>