Python Data Structures and Algorithms

Terminology

Let's consider some terms associated with trees.

To understand trees, we need to first understand the basic ideas on which they rest. The following figure contains a typical tree consisting of character nodes lettered A through to M.

Here is a list of terms associated with a Tree:

• Node: Each circled alphabet represents a node. A node is any structure that holds data.
• Root node: The root node is the only node from which all other nodes come. A tree with an undistinguishable root node cannot be considered as a tree. The root node in our tree is the node A.
• Sub-tree: A sub-tree of a tree is a tree with its nodes being a descendant ...