In this video, we tackle LeetCode 230 Kth Smallest Element in a BST, a classic medium-level problem perfect for mastering tree traversal algorithms. We explore the core property of Binary Search Trees where an Inorder Traversal yields sorted values, allowing us to pinpoint the kth smallest number efficiently. I break down two distinct approaches: a simple Recursive Inorder Traversal and an optimized Iterative Stack method that stops early for better performance. Whether you use Python, Java, C++, or JavaScript, this step-by-step tutorial covers the logic, edge cases, and time complexity analysis you need to ace your next coding interview.
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Solution Link:
https://leetcode.com/problems/kth-sma...
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