Stack Visualizer
Interactive visualization of stack operations with step-by-step code execution
Stack Structure
10
20
30
TOP
Stack Size: 3
Stack Operations
Push Element
Stack Push Operation
1function push(stack, value) {
2 // Add element to the top of stack
3 stack[stack.top] = value;
4
5 // Move top pointer forward
6 stack.top++;
7
8 // Increment stack size
9 stack.size++;
10
11 return stack;
12}Step 1 of 4
Add the new element to the top of the stack
About Stacks
Understanding the fundamentals, properties, and complexity analysis of stack data structures
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 same end, called the "top" of the stack. Think of it like a stack of plates - you can only add or remove plates from the top.
Advantages
- Simple and intuitive operations
- Constant time O(1) push and pop
- Memory efficient implementation
Disadvantages
- Limited access - only top element
- No random access to elements
- Potential stack overflow
Properties
Type:Linear LIFO
Access:Top Only
Push:O(1)
Pop:O(1)
Peek:O(1)
Search:O(n)
Common Use Cases
Function Call Management
Track function calls and returns
Expression Evaluation
Parse and evaluate mathematical expressions
Undo Operations
Implement undo functionality in applications
Browser History
Navigate backward through visited pages
Syntax Parsing
Check balanced parentheses and brackets
Time Complexity
Core Operations
Push (add to top)O(1)
Pop (remove from top)O(1)
Peek (view top)O(1)
Other Operations
Search elementO(n)
Check if emptyO(1)
Get sizeO(1)
Space Complexity
Total spaceO(n)
Auxiliary spaceO(1)