# What Are Examples of Dynamic Data Structure?

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Heather Bennett

Dynamic data structures are an essential part of computer programming. They allow us to efficiently manage and manipulate data in real-time. In this article, we will explore some examples of dynamic data structures and understand their importance in various applications.

## Arrays

One of the most commonly used dynamic data structures is an array. It allows us to store multiple elements of the same type in a contiguous block of memory.

Arrays are known for their constant-time access to elements using their indices. However, arrays have a fixed size, which means they cannot be easily resized once created.

Example: Consider an array that stores the names of students in a classroom:

• “John”
• “Emily”
• “Michael”

Linked lists provide an alternative to arrays when it comes to dynamic data storage. Unlike arrays, linked lists can grow or shrink dynamically as needed. Each element in a linked list, called a node, contains both data and a reference to the next node in the list.

Example: Let’s create a simple linked list that stores numbers:

• Node 1: Data = 5, Next = Node 2
• Node 2: Data = 10, Next = Node 3
• Node 3: Data = 15, Next = null (end of the list)

## Stacks

A stack is another example of a dynamic data structure that follows the Last-In-First-Out (LIFO) principle. It allows operations like push (addition) and pop (removal) from one end only.

Example: Imagine a stack of plates. The last plate placed on top is the first one to be removed when needed.

## Queues

In contrast to stacks, queues follow the First-In-First-Out (FIFO) principle. Elements are added at one end and removed from the other end.

Example: Consider a line of people waiting for a bus. The person who arrives first gets on the bus first.

## Trees

Trees are hierarchical data structures that consist of nodes connected by edges. Each node can have zero or more child nodes, forming a tree-like structure.

Example: A family tree represents relationships between family members, with each member being a node.

## Graphs

Graphs are another example of dynamic data structures that consist of vertices (nodes) and edges connecting them. They are widely used to represent relationships between objects.

Example: Social networks use graphs to represent connections between individuals, where each person is a vertex and their relationship is an edge.

In conclusion, dynamic data structures play a crucial role in computer programming by providing efficient ways to manage and manipulate data. Whether it’s arrays, linked lists, stacks, queues, trees, or graphs, understanding these examples helps us solve complex problems in various domains. So next time you encounter a problem that requires real-time data management, consider utilizing these dynamic data structures!