What Are Types of Trees in Data Structure?


Heather Bennett

In data structure, trees are hierarchical data structures that are widely used for organizing and representing data. A tree consists of nodes connected by edges, where each node can have zero or more child nodes.

Types of Trees

There are several types of trees in data structure. Let’s take a closer look at some of the commonly used ones:

1. Binary Tree

A binary tree is a type of tree in which each node can have at most two children, referred to as the left child and right child. The left child precedes the right child in terms of ordering.

Binary trees are often used for efficient searching and sorting operations. They can also be used to implement various algorithms such as binary search trees and heaps.

2. AVL Tree

An AVL tree is a self-balancing binary search tree in which the heights of the left and right subtrees differ by at most one. It ensures that the tree remains balanced even after insertions or deletions, providing efficient search, insert, and delete operations.

3. Red-Black Tree

A red-black tree is another type of self-balancing binary search tree that guarantees a logarithmic time complexity for common operations like search, insert, and delete. It maintains balance by assigning colors (red or black) to each node and following specific rules during insertion and deletion.

4. B-Tree

A B-tree is a balanced search tree designed to work efficiently on disk storage systems or databases where large amounts of data need to be stored and accessed quickly. It allows for efficient insertion, deletion, and searching operations by maintaining a balanced structure with multiple keys per node.

5. Trie

A trie, also known as a prefix tree, is a tree-like data structure used for efficient retrieval of keys in a large set of strings. It is particularly useful for tasks like autocomplete or spell checking. Each node in the trie represents a prefix or complete word, and the edges represent characters.


Trees are essential data structures in computer science and have various applications in different domains. Understanding the different types of trees and their properties can help you choose the appropriate tree structure for specific tasks or problems.

By incorporating trees into your algorithms and data structures, you can improve the efficiency and organization of your code.

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