Stacks are a fundamental data structure in computer science. They are used to store and manage data in a linear format, where elements are added and removed based on the Last-In-First-Out (LIFO) principle. This means that the last item added to the stack will be the first one to be removed. In this blog, we will explore what stacks are, how they work, and their use cases in computer programming.
What is a Stack?
A stack is a collection of elements, where data can be added or removed from only one end, called the “top” of the stack. The top of the stack is the only point of access for adding or removing elements. This restriction makes stacks useful for organizing and managing data in a linear fashion. When a new element is added to the stack, it becomes the top element, and when an element is removed from the stack, it is always the top element that is removed first.
Operations in a Stack
Stacks have two main operations: push and pop. The push operation adds an element to the top of the stack, while the pop operation removes the top element from the stack. In addition to these two operations, there are also two additional operations: peek and is_empty. The peek operation returns the top element of the stack without removing it, while the…
