What Are the Examples of Tree in Data Structure?


Scott Campbell

When it comes to data structures, trees are a fundamental concept that is widely used in computer science and programming. Trees provide a way to organize and store data in a hierarchical structure.

Just like real-life trees have branches and leaves, tree data structures have nodes and edges that connect them. In this article, we will explore some examples of trees in data structure and understand their applications.

Binary Search Tree (BST)

A binary search tree is a type of tree where each node has at most two children, referred to as the left child and the right child. The nodes are arranged in a specific order such that the value of any node’s left child is less than its own value, and the value of any node’s right child is greater than or equal to its own value. This property makes binary search trees efficient for searching operations.

To illustrate this, let’s consider an example:

       / \
      3   10
     / \    \
    1   6    14
       / \   /
      4   7 13

In this binary search tree, the left subtree of any node contains only values less than the node’s value, while the right subtree contains only values greater than or equal to the node’s value. This property allows for quick searching by comparing the desired value with the current node and navigating to either the left or right subtree accordingly.


A heap is another example of a tree-based data structure that satisfies specific properties. A heap can be either a min-heap or a max-heap. In a min-heap, each parent node has a smaller value than its children nodes, whereas in a max-heap, each parent node has a larger value than its children nodes.

Here’s an example of a max-heap:

         /     \
       20       10
      / \      / \
     12   15  7   8

In this max-heap, each parent node has a greater value than its children nodes. Heaps are commonly used in sorting algorithms like heap sort and priority queues, where efficient retrieval of the minimum or maximum element is required.

General Tree

A general tree is a more flexible tree data structure where each node can have any number of children. Unlike binary search trees or heaps, general trees don’t have specific ordering properties. They are commonly used to represent hierarchical relationships between data.

Here’s an example of a general tree:

       / | \
      B  C  D
     / \    | \
    E   F   G  H

In this general tree, each node can have any number of children. General trees are useful for representing hierarchical data structures like family trees, file systems, and organization charts.


Trees are versatile data structures that play an essential role in computer science and programming. The examples mentioned above – binary search trees, heaps, and general trees – demonstrate the diverse applications and uses of trees in organizing and managing data efficiently. Understanding these examples will provide you with a solid foundation for further exploration and utilization of tree-based algorithms and concepts.

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