Binary Tree Boundary Components

Left Boundary
Leaf Nodes
Right Boundary

Binary Tree Boundary Traversal is the process of traversing the boundary of a binary tree in an anticlockwise direction.

The boundary of a binary tree consists of three parts:

  1. Left Boundary: Nodes on the path from root to the leftmost node (excluding leaf nodes)
  2. Leaf Nodes: All the leaf nodes from left to right
  3. Right Boundary: Nodes on the path from the rightmost node to the root (excluding leaf nodes) in reverse order

In this animation, you can see how these three components form the complete boundary of the tree.