Stacks and Queues

Stack

Stack is a well-known data-structure, which follows first in, last out paradigm. It offers push and pop operations. We'll examine the complexity of these operations when stack is implemented using an array or a linked list.

Stack using Linked List

A stack can be implemented using a linked list. New items are always appended and removed at the head of the list. We discussed in the linked list section that appending an item to the head of a linked list takes constant time. Therefore, both push and ...