stack vs queue
Stack vs Queue: A stack and a queue are two fundamental data structures in computer science. A stack is a collection of elements that follows the Last-In-First-Out (LIFO) principle. This means that the last element added to the stack is the first one to be removed. It operates by two main operations: push, which adds an element to the top of the stack, and pop, which removes and returns the top element of the stack. On the other hand, a queue is a collection of elements that follows the First-In-First-Out (FIFO) principle. This means that the first element added to the queue is the first one to be removed. It operates by enqueue, which adds an element to the end of the queue, and dequeue, which removes and returns the front element of the queue. In summary, the fundamental difference between a stack and a queue lies in the order of adding and removing elements. A stack uses LIFO, while a queue uses FIFO.
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