What Are the Types of Tree in Data Structure?


Heather Bennett

What Are the Types of Trees in Data Structure?

When it comes to data structures, trees are an important concept to understand. Trees are hierarchical structures that have various applications in computer science. They are made up of nodes connected by edges, forming a branching structure.

Types of Trees

There are several types of trees in data structure, each with its own unique characteristics and use cases:

1. Binary Tree

A binary tree is a type of tree where each node has at most two children.

These children are referred to as the left child and the right child. The binary tree is widely used due to its simplicity and ease of implementation.

2. Binary Search Tree (BST)

A binary search tree is a variant of the binary tree where each node’s left child is less than its value, and the right child is greater than its value. This property allows for efficient searching, insertion, and deletion operations.

3. AVL Tree

The AVL tree is a self-balancing binary search tree that maintains a balance factor for each node, ensuring that the height difference between its left and right subtrees is at most one. This balance factor helps optimize search operations by keeping the tree height balanced.

4. Red-Black Tree

The red-black tree is another self-balancing binary search tree that ensures logarithmic time complexity for various operations. It achieves this balance by maintaining properties such as every node being either red or black and following specific rules during insertion and deletion.

5. B-Tree

A B-tree is a self-balancing search tree designed to efficiently handle large amounts of data by reducing disk I/O operations.

It is commonly used in file systems and databases. B-trees have multiple children per node and can handle a variable number of keys.

6. Trie

A trie, also known as a prefix tree, is a specialized tree structure used for efficient retrieval of strings or words stored as keys. Each node in the trie represents a common prefix, and the paths to different nodes represent different characters.

7. Heap

A heap is a complete binary tree that satisfies the heap property, where each parent node’s value is either greater than or equal to (in a max heap) or less than or equal to (in a min heap) its children’s values. Heaps are commonly used in priority queues and sorting algorithms.


Trees are versatile data structures that offer efficient storage and retrieval mechanisms for various applications. Understanding the different types of trees available in data structure allows you to choose the most suitable one for your specific needs.

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