Review SSL handshake
TCP three-way handshake and so on.
Difference among Red-Black Tree, AVL Tree and B-Tree.
Self-study used
Using Priority queue in java to find min/max.
越老越吃香
Q&A for mechanical engineering students in PRC.
Use the `fast - slow pointer` to find a linked list's midpoint.
Using dynamic programming to solve the knapsack problem.