This is a really good lecture. It explains each algorithm from the basics, so I could understand why it works this way. I was frustrated and almost gave up on Dijkstra's algorithm or red-black tree in the middle, but I listened to the lecture while replaying and stopping to understand as much as possible. When I took the last dynamic programming class, I was so amazed by how beautiful it was. I strongly recommend this lecture to those who only know the grammar and want to get started with algorithms.