What Is an Example of a Dynamic Data Structure?


Angela Bailey

A dynamic data structure is a type of data structure that can grow or shrink in size during the execution of a program. Unlike static data structures, which have a fixed size, dynamic data structures allow for more flexibility and efficient memory management. There are several examples of dynamic data structures, including arrays, linked lists, stacks, queues, and trees.


An array is a collection of elements of the same type that are stored in contiguous memory locations. The size of an array is determined at compile-time and cannot be changed during runtime. However, there are dynamic array implementations available in some programming languages that allow for resizing the array as needed.

Linked Lists

A linked list is a data structure made up of nodes, where each node contains a value and a pointer to the next node in the sequence. Unlike arrays, linked lists can dynamically grow or shrink by adding or removing nodes at any position. This makes linked lists suitable for scenarios where frequent insertions or deletions are required.


A stack is an abstract data type that follows the Last-In-First-Out (LIFO) principle. It can be implemented using either an array or a linked list.

When elements are added to the stack (pushed), they are placed on top and become the new top element. When elements are removed from the stack (popped), the top element is removed first.


A queue is an abstract data type that follows the First-In-First-Out (FIFO) principle. Similar to stacks, queues can also be implemented using either an array or a linked list. Elements are added to the back of the queue (enqueue) and removed from the front (dequeue).


A tree is a hierarchical data structure that consists of nodes connected by edges. Each node can have zero or more child nodes, except for the root node, which has no parent. Trees are commonly used for representing hierarchical relationships, such as file systems or organization structures.


In conclusion, dynamic data structures provide the flexibility to adapt to changing requirements during program execution. Arrays, linked lists, stacks, queues, and trees are all examples of dynamic data structures that offer different trade-offs in terms of memory usage and performance. Understanding these data structures and their characteristics is essential for efficient programming and problem-solving.

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