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, the last element added is the first one to be removed, following the Last-In-First-Out (LIFO) principle. This means that elements are added and removed from the same end, typically referred to as the "top" of the stack.

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

In summary, a stack operates on the LIFO principle, while a queue operates on the FIFO principle.