A stack is a fundamental data structure in computer science that follows the Last-In-First-Out (LIFO) principle. It is a collection of elements where the addition and removal of elements happen at one end, known as the "top" of the stack.
The key characteristics of a stack are:
LIFO (Last-In-First-Out) Principle
The last element added to the stack is the first one to be removed. This means that the most recently added item is the first one to be accessed or removed.
Operations
The main operations performed on a stack are:
Push: Adds an element to the top of the stack.
Pop: Removes and returns the top element from the stack.
Peek: Returns the top element of the stack without removing it.
IsEmpty: Checks if the stack is empty (has no elements).
Applications of Stacks
Stacks have a wide range of applications in computer...
