What is the difference between a stack and a queue?

What is the difference between a stack and a queue?

The main difference between a stack and a queue is the order in which elements are accessed and removed.

In a stack, also known as Last-In-First-Out (LIFO), the last element added is the first one to be removed. It follows the principle of "last in, first out". Elements are added and removed from the same end, typically called the top of the stack.

In contrast, a queue, also known as First-In-First-Out (FIFO), follows the principle of "first in, first out". The first element added is the first one to be removed. Elements are added at one end, called the rear or back of the queue, and removed from the other end, called the front or head of the queue.

To summarize, the main difference between a stack and a queue is the order in which elements are accessed and removed: stack follows LIFO, while queue follows FIFO.