DSA Python - Next Greater Element II | Circular Array using Stack | Leetcode 503 - Part 92 [Hindi]

Published: 23 April 2025
on channel: Code and Debug
4,700
143

🚀 Welcome to Part 92 of Code & Debug’s DSA Python Course!

In this video, we solve Leetcode 503: Next Greater Element II, where we handle a circular array using the Monotonic Stack technique. Instead of duplicating the array, we imagine an extended array to solve it in O(n) time efficiently.

📚 What you’ll learn in this video:
✅ Understanding the concept of circular arrays
✅ Why we need to traverse the array twice using modular indexing
✅ Efficient Monotonic Stack approach with dry run
✅ Python implementation without modifying the original array
✅ Time and space complexity analysis

💡 Why is this important?
This problem is a twist on the standard Next Greater Element and is a great way to learn how to handle circular data structures. It’s commonly asked in interviews for roles requiring array manipulation and stack logic expertise.

👉 Practice the problem on Leetcode:
🔗 https://leetcode.com/problems/next-gr...

👉 Refer to the article for better understanding:
https://codeanddebug.in/blog/next-gre...

👉 📄 Access the full YouTube DSA Playlist Sheet (All Questions in Order):
🔗 https://docs.google.com/spreadsheets/...

👉 Enroll in the free DSA Python course here:
https://codeanddebug.in/course/master...

👉 Enroll for Self-Paced Advance DSA course here:
https://codeanddebug.in/course/zero-t...

🙏 Thank you for supporting Code & Debug! Don’t forget to like, share, and subscribe to our channel. Hit the 🔔 bell icon to stay updated with our latest lectures.

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