S7:E4 - "A 2-3 tree for you and me"

We continue our discussion of tree data structures with 2-3 trees, where the nodes of every tree contain data in the form of keys, as well as potential child nodes. Not only that, but it can contain MORE THAN ONE KEY. They are also the -key- to what we'll be talking about next episode, B-trees, and you won't tree-lieve how cool those are. Based on Vaidehi Joshi's blog post, "Busying Oneself With B-Trees".