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Stacks & Queues Visualization

Master LIFO and FIFO data structures with interactive visualizations. Understand how elements are added and removed, and explore different types of stacks and queues used in computer science.

Total Algorithms

4

Data Structures

2

Difficulty Range

Easy - Medium

Key Concepts

LIFO & FIFO

Stack Operations

Easy

LIFO data structure with push, pop, and peek operations

Time Complexity:O(1)
Space Complexity:O(n)
LIFOPushPopPeekStack Overflow
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Queue Operations

Easy

FIFO data structure with enqueue and dequeue operations

Time Complexity:O(1)
Space Complexity:O(n)
FIFOEnqueueDequeueFrontRear
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Priority Queue

Medium

Queue where elements are served based on priority

Time Complexity:O(log n)
Space Complexity:O(n)
PriorityHeapExtract MaxBinary Heap
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Double-ended Queue

Medium

Queue that allows insertion and deletion from both ends

Time Complexity:O(1)
Space Complexity:O(n)
DequeFront OperationsRear OperationsBidirectional
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📚Stack (LIFO)

  • • Last In, First Out principle
  • • Operations: Push, Pop, Peek/Top
  • • Use cases: Function calls, undo operations
  • • Memory: Call stack, expression evaluation

➡️Queue (FIFO)

  • • First In, First Out principle
  • • Operations: Enqueue, Dequeue, Front
  • • Use cases: Task scheduling, breadth-first search
  • • Systems: CPU scheduling, printer queues

📚 Recommended Learning Path

1

Master Stack Operations

Learn LIFO principles, push/pop operations, and stack overflow concepts.

2

Understand Queue Operations

Explore FIFO behavior, enqueue/dequeue operations, and queue applications.

3

Explore Priority Queue

Learn about priority-based processing and heap-based implementations.

4

Advanced: Double-ended Queue

Master bidirectional operations and deque applications in algorithms.