Validate BST | Leetcode 98 | Inorder, Min-Max Recursive | DSA Python | srkcodes

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Published on April 16, 2025 3:15:07 PM ● Video Link: https://www.youtube.com/watch?v=yg7fehj26jU

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Welcome to srkcodes, your trusted Telugu source for DSA interview prep, Python coding tutorials, and Leetcode solutions!
In this video, we solve Leetcode Question 98: Validate Binary Search Tree (BST) using two powerful techniques in Python.

🔍 What You’ll Learn Today:
Inorder Traversal + List Approach:
Uses inorder property of BSTs to verify if the node values are strictly increasing.
Simple yet powerful way to validate BSTs.

Recursive Min-Max Approach:
Learn how to use recursion with min and max bounds to ensure each node follows BST rules.
Perfect for deeper understanding of tree validation logic.
Python Code Walkthrough (in Telugu):
Clean, beginner-friendly explanations of both methods.
Understand edge cases and why some trees fail BST rules.

Time & Space Complexities:
Analyze efficiency of both approaches to choose the best during interviews.

When to Use Which Method:
Understand which approach is best suited for interviews or large datasets.

💡 Real-World Relevance:
Commonly asked in FAANG and MNC technical rounds.
Strengthens core Binary Tree + BST concepts for upcoming topics like insertion, deletion, traversals.
Helps crack Python coding interviews and system design questions involving trees.

💬 Comment Your Thoughts:
Which approach did you like more? Share your answers, doubts, or alternative methods below!

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🔗 External Study Resources for Deep Dive:
📝 Problem discussed in the video ➡ ️https://leetcode.com/problems/validate-binary-search-tree/description/..

📚 Topic's ⬇ ️
BShttps://www.programiz.com/dsa/binary-search-tree-...

💡 LeetCode problemshttps://leetcode.com/problem-list/binary-search-tree/bin...