Thank you for this, I am a self taught software engineer about 3-4 years into my career and I've been studying lots of algorithms on my free time, especially us

Thank you for this, I am a self taught software engineer about 3-4 years into my career and I've been studying lots of algorithms on my free time, especially using HackerRank to solve the problems with Python. It's nice to have such a complete list of lectures like this. I struggle remembering all the operations on the data structures like percolate a tree, or some types of graph operations.