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Priority Queue Data Structure Visualizer

STEM Interactive Visual Learning Program at TEC-Bridge AI

Priority Queue Setup

Priority Queue Operations

Priority Queue Visualization


Operation Steps

How to Use

  1. Setup: Enter value,priority pairs or click "Random" to generate a priority queue
  2. Enqueue: Enter value and priority, then click "Enqueue" to add element
  3. Dequeue: Click "Dequeue" to remove highest priority element
  4. Peek: Click "Peek" to view the highest priority element
  5. Traverse: Click "Traverse" to visit all elements by priority
  6. Observe: Watch elements being processed with priority-based visualization
  7. Reset: Click "Reset" to restore the original queue and start over

Priority Colors: Red = High (1-2), Orange = Medium (3-4), Green = Low (5+)

Priority Queue Concept

Priority Queue is an abstract data type where each element has an associated priority.

Key Characteristics:

  • Elements served based on priority, not insertion order
  • Higher priority elements dequeued first
  • Same priority elements follow FIFO
  • Can be implemented using heaps or arrays
  • Dynamic priority assignment

Purpose & Applications

Why use Priority Queues?

  • Handle tasks by importance level
  • Efficient priority-based scheduling
  • Optimal resource allocation
  • Event-driven simulations
  • Algorithm optimization

Common Applications:

  • Operating system task scheduling
  • Network packet routing
  • Dijkstra's shortest path algorithm
  • A* pathfinding algorithm
  • Emergency room patient triage

Time & Space Complexity

Operation Time Complexity Space Complexity
Enqueue O(log n) O(1)
Dequeue O(log n) O(1)
Peek O(1) O(1)
Search O(n) O(1)
Traversal O(n) O(1)

Strengths & Limitations

Strengths:

  • Efficient priority-based access
  • Logarithmic time operations
  • Flexible priority assignment
  • Optimal for scheduling algorithms
  • Dynamic priority updates possible

Limitations:

  • More complex than simple queue
  • Higher memory overhead
  • No random access to elements
  • Priority conflicts need resolution
  • Implementation complexity

Priority Queue Code Implementation

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