📊 LeetCode Solution: Count Complete Tree Nodes (Problem 222) 🌳

In this video, we tackle the problem of counting nodes in a complete binary tree. 🌲

🔍 Problem Description:
Given the root of a complete binary tree, return the number of nodes in the tree. In a complete binary tree, every level, except possibly the last, is completely filled, and all nodes in the last level are as far left as possible. The challenge is to design an algorithm that runs in less than O(n) time complexity.

💡 Example:

Input: root = [1,2,3,4,5,6]
Output: 6
Input: root = []
Output: 0
Input: root = [1]
Output: 1
⚙️ Constraints:

Number of nodes in the tree: [0, 50,000]
Node values: [0, 50,000]
Tree is guaranteed to be complete.
📚 Solution Overview:
We will explore a BFS (Breadth-First Search) approach to solve this problem efficiently by leveraging the properties of a complete binary tree.

📽️ Watch the video to see the full solution and explanation!

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#LeetCode #BinaryTree #CodingInterview #Algorithm #DataStructures #CompleteBinaryTree #CodingChallenges #Programming #Java #treetraversal

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Видео 📊 LeetCode Solution: Count Complete Tree Nodes (Problem 222) 🌳 канала Adarsh Dubey