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Introduction
Both stack and queue are linear data structures used for storing and managing collections of elements. They allow access and removal of elements based on specific rules.
Difference: A stack follows the Last In, First Out (LIFO) principle, whereas a queue follows the First In, First Out (FIFO) principle.
This blog will discuss the various differences between the stacks and the queue data structures by understanding both stack and queue and then comparing both Data Structures. At last, we will understand the practical application of stack and queue individually. So, let's get started!
What is a Stack Data Structure?
Stack is a special type of ADT also known as Abstract data type, which is known to store and remove elements from one side of the list only, that side is known as ‘TOP’. ‘Last in first out’, commonly known as ‘LIFO’ is the order which is followed by the stack. In the stack, we can’t access any element as we can access the array, We can only access that element that is on the top of the stack. A pointer is used to keep the track of the ‘top’ element of the stack.
Condition to Check if Stack is Empty
int Empty()
{
if(top==-1)
return 1;
else return 0;
}
You can also try this code with Online C++ Compiler
A queue is a special type of ADT also known as Abstract data type, which is known to store elements from one side knowns as ‘rear’ and remove elements from the other side known as ‘front’. ‘First in First Out’, commonly known as ‘FIFO’ is the order which is followed by the queue. In the queue, we can’t access any element as we can access in the array, we can only access the front element of the stack and push the element in the ‘rear’. A pointer is used to keep the track of the ‘front’ element of the stack and the ‘rear’ of the stack.
Let us understand the condition to check if the queue is empty or full
Stacks and queues are called linear data structures. A stack follows Last In, First Out (LIFO) order, where the last element added is the first to be removed. A queue follows First In, First Out (FIFO) order.
Why is queue called FIFO?
A queue is called FIFO (First In, First Out) because the first element added to the queue is the first one to be removed. This ensures that elements are processed in the order they arrive.
What kind of data can we store in the stack?
We can store homogeneous data of any data type.
What are the types of queues?
There are three types of queues which are as follows:-
Simple Queue
Double Ended Queue
Circular Queue
What is the advantage of queue over stack?
The primary advantage of a queue over a stack is that it enforces FIFO (First In, First Out) order, ensuring elements are processed in the exact order they were added.
Conclusion
In this article, we discussed the differences between the stack and queue data structures.
We hope that this blog has helped you increase your knowledge regarding Stack and Queues, and if you liked this blog, check other links. Do upvote our blog to help other ninjas grow.