DAS | LeetCode 189 – Rotate Array | Brute Force to Optimal
🔥 Today we crack LeetCode 189 — Rotate Array! Given an integer array, rotate the array to the right by k steps. Sounds simple? 🤔 In this video, we don't just solve the problem — we deeply understand the intuition behind the optimal in-place solution using the famous Reverse Algorithm approach. We'll break down every step, visualize the rotations, perform a complete dry run, and understand why reversing the array three times magically gives us the correct answer. 🧠 What You Will Learn: ✅ How to rotate an array efficiently ✅ Brute Force vs Better vs Optimal approaches ✅ Reverse Algorithm intuition ✅ Why reversing 3 times works ✅ Full dry run step-by-step ✅ Time & Space Complexity analysis ✅ Clean production-ready Java solution ✅ Interview tips and edge cases 🎬 Complete DSA Playlist: 👉 DSA for Tech Interviews | Complete Interview Preparation 📚 Notes & Learning Resources: 👉 https://docs.google.com/document/d/1a... 💻 Full Solution on GitHub: 👉 https://github.com/vakeel-labs/java-s... 🌐 Website: 👉 https://codewithvakeel.com 🔗 Connect & Join the Community: 💬 WhatsApp Community — Daily DSA Problems, System Design Discussions & Interview Prep 👉 https://chat.whatsapp.com/JWcjsjBH2xx 💼 LinkedIn 👉 / mohd-vakeel-46702754 💻 GitHub 👉 https://github.com/vakeel-labs 00:00 Introduction & Problem Statement 10:10 Brute Force Approach 13:34 Better Approach 18:58 Optimal Approach (Reverse Algorithm) #️⃣ HASHTAGS: #leetcode #LeetCode189 #RotateArray #ArrayProblems #ReverseAlgorithm #DSA #DataStructures #Algorithms #Java #JavaProgramming #CodingInterview #InterviewPrep #SoftwareEngineering #SDE #ProblemSolving #ArrayManipulation #TwoPointers #TechInterviews #LeetCodeSolutions #CodeWithVakeel
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