The conversation between human and AI assistant.
What is a binary tree?
How does one traverse a binary tree?
There are three common ways to traverse a binary tree: in-order, pre-order, and post-order. In in-order traversal, first the left subtree is traversed, then the root node, then the right subtree. In pre-order traversal, the root node is visited first, followed by the left then the right subtree. In post-order traversal, the left and right subtrees are visited before the root node.