This week, we learned about binary trees. Binary trees are fun and easy because they only split into two branches at each level, and if you keep on drawing them they become strangely symmetrical shrub-like things that are not messy and confusing like loopy graphs. Binary trees remind of tigger’s family tree.
I can’t think of much to say about binary trees. They don’t make very good conversation topics. Hmm…
Enter Person A and Person B.
A: Hey, Person B! Don’t you love binary trees?
A: Glad you agree with me! Binary trees are just the excitement of my life!
B: inching away from Person A Right.
A: Here, look. I made my family tree a binary tree starting from my great great great great grandmother Patsy! Isn’t that beautiful?
B: not really looking Stunning.
A: And binary trees can represent expressions too! Look at this one! It’s (2+1)*(5+11), but it’s represented with lines in the binary tree instead of parentheses! Isn’t this just a perfect depiction of the distributive property in Discrete Math? I love the distributive property!
B: suddenly grinning widely and using the cheery kindergarten teacher voice I’m sure you do.
A: And you can write out binary trees in different traversals, too: preorder, inorder, and postorder. All of them are great, of course, but I prefer inorder. It’s left to root to right, or perfect horizontal ordering!
B: sighs So exciting.
A: I know right! Preorder means root left right, and postorder means right left root. If you understand that, you can convert preorder or postorder or inorder notation to another notation without having to see the binary tree at all!
B: gives Person A the eyebrow Are you high on candy canes or something?
A: Actually, yes! I still have a few dozen candy canes leftover from Christmas! Do you want to come over and glue them on my wall into a pretty binary tree with me? It would be so great, and every day, I could wake up and see the glory of binary trees!
B: Uh, no thanks. It was, uh, nice talking with you. I have to go. You go ahead and, um, have fun with those binary trees.
A: Thank you! I definitely will!
Exit Person B.
Person A smiles at the beautiful sky, then begins to exit. Dimout.
My favorite traversal is inorder too, but I threw out all of my Christmas candy canes in mid-January. Still, I can’t think of anything to say about binary trees. It’s just an awkward topic in general.
I have yet to prepare my presentation for my graph theory project. This will be extremely awkward (“Uh, hi, um, well, my name is Cecilia. Oh no wait, you already knew that, sorry, I thought it was my NHD interview, um, well, my graph represents a rainbow, and, uh, OKAY I’M OFFICIALLY EMOTIONALLY UNSTABLE I’M LEAVING BYE” and I walk out the door while bursting out in song). That will just be delightful.
Yesterday (Saturday) was Maryland NHD. The judges were pretty nice and seemed to like me, so now I have a first place ribbon and a long complicated packet about going to Nationals. The horrible part about this is that Nationals are June 10th to 14th, while school ends on June 8th. This is obviously a case of bootie-knitting, world history loving adults who wear weird glasses wanting to make kids think about academics after the school year is over.
I, for the first time since the beginning of the year, am the first to post. This is surprising since I thought that everyone was going to post last Thursday.
I just got the sheet music for Dark Waltz, which I will probably sing for the talent show. While Helen juggles.
Nothing else happened these two weeks. I will go make my picture now.