Here are my solutions (mostly in Jupyter notebooks) to a good amount of Elements of Programming Interviews in Python.

This is a great book for learning algos in python. In my opinion, the book is far superior to Cracking the Coding Interview in terms of solutions and explanations of concepts.

Although I can't promise my solutions are always the most efficient in terms of time and space complexity, for many of the problems I present more than one solution if I thought of something more efficient. I have made an effort to analyze the time and space complexity for almost all of my solutions, and I have also made an effort ensure correctness by testing on many inputs.