DSA in Python - Understanding Deque in Python | append, popleft, appendleft, pop | Part 84 [Hindi]
🚀 Welcome to Part 84 of Code & Debug’s DSA in Python Course!
In this lecture, we understand the deque class from Python’s collections module, which is a double-ended queue that allows insertion and deletion from both ends in O(1) time. It’s an essential tool for solving sliding window, BFS, and queue-based problems efficiently.
📚 What you’ll learn in this video:
✅ What is a deque and why it’s better than a list for certain operations
✅ deque vs list time complexity comparison
✅ Commonly used methods:
• append() – O(1)
• appendleft() – O(1)
• pop() – O(1)
• popleft() – O(1)
✅ Internal working of deque and use cases in DSA problems
✅ When to use deque in interview-level questions
💡 Why is this important?
Deque is a powerful, built-in data structure that helps in optimizing problems that require efficient operations on both ends. It’s widely used in sliding window, LRU Cache, BFS, and Monotonic Queue problems.
👉 Link to solve the question:
https://www.geeksforgeeks.org/problem...
👉 In-Depth Article with Code & Explanations:
https://codeanddebug.in/blog/implemen...
👉 📄 Access the full YouTube DSA Playlist Sheet (All Questions in Order):
🔗 https://docs.google.com/spreadsheets/...
👉 Enroll in this FREE DSA Python course here:
🔗 https://codeanddebug.in/course/master...
👉 Enroll for Self-Paced Advanced DSA course here:
🔗 https://codeanddebug.in/course/zero-t...
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