4th Slog (WEEK 6)

This week, we learned a new common data structure called the tree. One thing that made me annoyed was those various vocabularies for describing different parts of the tree. Most of them are fine, but words like sibling, children, subtree aren't make sense to me at the beginning! Good thing was after the lectures and having more reading, I realized that those terminologies are reasonable and important. Also, we have to memory the tree traversals in three different ways: preorder, inorder and postorder. They are actually pretty straightforward if you have enough practice and reading. 

Another thing that I should really try to start is A1. Since the due date have been changed, I will use the whole reading week(actually 4 days left...) to do this terrifying assignment. Hopefully it won't kill me...