Stack is Empty.
Understanding the Stack Data Structure
A comprehensive overview of stacks, their operations, and real-world applications.
What is a Stack?
A stack is a linear data structure that follows the Last-In-First-Out (LIFO) principle. Elements are added and removed from the top of the stack.
Stack Operations
- Push: Adds an element to the top of the stack.
- Pop: Removes the top element from the stack.
- Peek: Returns the top element without removing it.
- isEmpty: Checks if the stack is empty.
- isFull: Checks if the stack is full (in case of a bounded stack).
Examples of Stack in Action
Some common examples of stack usage:
- Undo functionality in text editors.
- Backtracking in maze solving algorithms.
- Function call stack in programming.
Real-World Applications
Stacks are widely used in various computing contexts:
- Browser history navigation.
- Expression evaluation and syntax parsing.
- Managing recursive function calls.
Stack Code Implementation