S3:E5 - "When the washing machine's 'Inorder'"

Let's dig into another depth-first search strategy: in-order! This time, we walk through a numerical example, traversing the tree with fresh, animated voices and a broken washing machine. And when you're done learning all about inorder, take our postorder challenge! Tweet us the output of a postorder strategy applied to this binary search tree. Make sure to use the #basecs hashtag, and no cheating! :D Based on Vaidehi Joshi's blog post, "Demystifying Depth-First Search".