Next Permutation Explained | LeetCode 31 | Java (Step-by-Step Solution)

In this video, I explain how to solve the **Next Permutation** problem (LeetCode #31) in both **Java** and **JavaScript**. We’ll go step-by-step through the logic, identify the "drop point", perform swaps, and reverse the array segment to generate the next lexicographical permutation — all in-place and with clear explanations. 🔹 Topics Covered: - Understanding the Next Permutation problem - Step-by-step algorithm logic - JavaScript implementation walkthrough - Time and Space Complexity 📘 Code examples: ✅ JavaScript ✅ Java 👉 Perfect for: - Coding interview preparation - LeetCode and DSA practice - Learning algorithms in Java and JavaScript Timestamps: 00:00 Introduction 00:15 Problem statement 01:35 Understanding problem 04:20 Brute force solution explained 07:30 Optimal solution explained 21:00 Optimal solution execution in leetcode 28:45 Wrap up On this channel, you'll find: ✅ Beginner to Advanced DSA Tutorials (Arrays, Linked Lists, Trees, Graphs, Dynamic Programming & more!) ✅ Coding Interview Preparation (Google, Microsoft, Amazon, FAANG & top tech companies) ✅ LeetCode, CodeChef, HackerRank Solutions with in-depth explanations ✅ System Design & Competitive Programming Tips 🎯 Whether you're a beginner starting your DSA journey or a pro sharpening your problem-solving skills, this channel has something for you!🔔 Subscribe now & start your DSA mastery journey today! 📌 Follow us for updates & extra content: 📱Instagram: https://www.instagram.com/maheshrd999/ 🌐 LinkedIn: https://www.linkedin.com/in/mahesh-dharwad-b4839267/ #NextPermutation #LeetCode31 #JavaScript #Java #CodingInterview #LeetCodeSolution #Algorithm #DataStructures #DSA #Programming #CodingTutorial