DSA
DSA/Queue & Deque
Queue & Deque
Coming soonModel streaming and level-by-level processing, and use a deque to answer sliding-window maximum in linear time.
10
Planned lessons
9
Coding problems
5h
Est. study time
Medium
Difficulty
Overview
Queues and deques model FIFO processing and sliding windows. You'll use a double-ended queue to answer sliding-window maximum in linear time.
Why it matters
A monotonic deque solves sliding-window extremes in O(n), and queues are the backbone of BFS and level-order traversal you'll reuse in trees and graphs.
What the course will cover
- Queue vs deque and their operations
- BFS and level-order processing
- Monotonic deque for sliding-window maximum
- Circular queues and design problems
- Patterns: Sliding Window Maximum, Design Circular Queue
Interview relevance
Deque-based window problems are a common medium/hard filter. Interviewers look for the linear-time deque insight rather than a heap.
Topics you'll master
QueueDequeSliding Window
In the meantime, dive into a published track to keep your momentum.