6.006 Introduction to Algorithms (Spring 2020, MIT OCW). Instructors: Prof. Erik Demaine, Dr. Jason Ku, and Prof. Justin Solomon. This course is an introduction to mathematical modeling of computational problems, as well as common algorithms, algorithmic paradigms, and data structures used to solve these problems. It emphasizes the relationship between algorithms and programming and introduces basic performance measures and analysis techniques for these problems.
(from ocw.mit.edu)
Lecture 07 - Binary Trees, Part 2
Instructor: Prof. Erik Demaine. This is the second lecture on binary trees. This covers subtree augmentation and sequence binary trees with subtree sizes. Rotations, rebalancing, and height augmentation are used to achieve height balance (AVL).