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What is a 2-3 Tree?

Learn to understand 2-3 Trees, a balanced and ordered search tree important for efficient data storage and retrieval. This lesson explains their structure, properties, and key operations like search, insertion, and deletion, emphasizing why 2-3 Trees maintain logarithmic height and fast performance in data structures.

Introduction

A 2-3 Tree is another form of a search tree, but it is very different from a Binary Search Tree. Unlike BST, 2-3 Tree is a balanced and ordered search tree that provides a very efficient storage mechanism to guarantee fast operations. We will take a detailed look at a 2-3 Trees’s structure, the limitations it follows, and how elements are inserted and deleted from it.

One key feature of a 2-3 Tree is that it remains balanced, no matter how many insertions or deletions you perform. The leaf nodes are always present on the same level and are quite small ...