Next Permutation Explained – Python DSA Trick for Tough Interviews 🔥

🔁 Next Permutation – Master This Tricky DSA Interview Problem in Python!
In this video, we solve the Next Permutation problem – a popular medium-to-hard level DSA question frequently asked in interviews at Google, Amazon, Microsoft, and other top tech companies.

We’ll walk you through: ✅ The full intuition behind the algorithm
✅ Step-by-step logic to find the next lexicographical permutation
✅ Clean and efficient Python code
✅ How to handle edge cases like the last permutation
✅ Tips to avoid common mistakes in interviews

This is a must-know problem for serious candidates preparing for FAANG interviews or competitive coding rounds.

👨‍💻 What You'll Learn:

Reversal technique + two-pointer strategy

Full dry-run explanation

Code walkthrough in Python

🎯 Problem Tags: Arrays, Permutations, Two-Pointer, Greedy
🧠 Difficulty: Medium
💻 Language: Python
📌 Seen On: Leetcode, GFG, FAANG Coding Interviews

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