juniorQueues
Explain Enqueue and Dequeue operations.
Updated Apr 28, 2026
Short answer
Enqueue adds an element to the rear; Dequeue removes an element from the front.
Deep explanation
Queues are fundamental in managing sequential tasks. Enqueue adds an element to the rear; Dequeue removes an element from the front. They ensure fairness and order by processing items as they arrive.
Real-world example
Printer job management.
Common mistakes
- Popping from the end of an array instead of the front (behaving like a stack).
Follow-up questions
- What is FIFO?