TreesLesson 23Free preview

DSA Trees

This lesson is part of DSA · All levels

Summary

A tree is a non-linear data structure consisting of a set of hierarchically connected nodes, initiated by a single root and branching down without forming a cycle. Every node except the root has exactly one parent, and a node without a child is called a leaf. Tree is used to represent hierarchies such as system files and expressions.

Key points

A hierarchical structure with one root and multiple levels
Terms: parent, child, sibling, leaf, and subtree
There must be no inter-node cycle.
Depth and height determine the balance of the tree

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