This course is one of the most important courses you'll take in CS. Since there is a lot of material to cover, professor Gao moves too fast so make sure to keep up with studying after every lecture.

The textbook for Algo is actually really good, I highly recommend reading it as a reference for when you don't understand something (or for when your professor doesn't know how to teach). I basically learned everything from the textbook and from geeksforgeeks.com (which is a surprisingly good resource).

I like professor Gao but he is going too fast