* Fix spelling in docstrings
* Improve comments and formatting
* Update print statement to reflect doctest change
* improve phrasing and apply black
* Update rat_in_maze.py
This method is recursive starting from (i, j) and going in one of four directions:
up, down, left, right.
If a path is found to destination it returns True otherwise it returns False.
Co-authored-by: Christian Clauss <cclauss@me.com>