midQueues
How to check if a Queue is full or empty?
Updated Apr 28, 2026
Short answer
Empty when front -1; Full when (rear + 1) % size front.
Deep explanation
Mid-level queue concepts involve specific optimizations and algorithm integration. Empty when front -1; Full when (rear + 1) % size front.
Real-world example
Managing requests in a web server buffer.
Common mistakes
- Forgetting to reset pointers to -1 when the last element is dequeued.
Follow-up questions
- What is the time complexity of Heap-based PQ push?