Depth-first Memes

Forget explaining traversal algorithms—I've moved on to the real computer science question: binary tree fashion choices. Left image: individual pants for each branch (clearly a depth-first dresser). Right image: one giant pair covering all nodes (breadth-first believer). The left tree is basically wearing 15 pairs of skinny jeans while the right one's rocking a single pair of MC Hammer pants. And they say data structures aren't stylish! Next up: linked lists and their necklace preferences.