Скачать или смотреть 222. Count Complete Tree Nodes | Leetcode Unlocked - Python

In this video, we break down LeetCode 222: Count Complete Tree Nodes. While counting nodes seems trivial, the challenge here is the constraint: we must solve it in less than linear time O(N). We dive deep into the definition of a Complete Binary Tree versus a Perfect Binary Tree and use these properties to design an optimized O(log squared N) algorithm. By comparing the height of left and right subtrees, we can calculate node counts mathematically using bitwise shifts rather than traversing every single node. This tutorial covers the recursive strategy, time complexity analysis, and provides full code implementations in Python, Java, C++, and JavaScript. Master this tree optimization technique to ace your next technical interview.

🧋 Support the channel!
My Daily To Do: https://www.mydailytodo.com/
Buy Me A Boba: https://www.buymeaboba.com
Leetcode Daily:    / @leetcodedaily-ama  

✍️ My Planning Tools (Affiliate Links)
I use a tablet to sketch out data structures and logic before coding. Using these links helps support the channel at no extra cost to you!
Latest S-Pen Tablet: https://amzn.to/4nsgXRw
Great Budget Tablet: https://amzn.to/4ow4v3Y

Perfect for coding interview preparation and improving problem-solving skills.

👍 Like, Subscribe, and Comment! Let me know what problems you'd like to see solved.

Solution Link:
https://leetcode.com/problems/count-c...

#leetcode #python #algorithms #codinginterview #dailycoding