Contains Duplicate Problem 🎯| Easy Solution +😱Interview Question Explained Java in Tamil🔥

🚀 Learn how to solve the "Contains Duplicate" problem quickly and efficiently! This is one of the MOST asked coding interview questions 😱 and in this video, I’ll show you: ✅ Brute force vs Optimized approach ✅ Best trick to solve in O(n) ✅ Real interview-style explanation ✅ Bonus interview question 💡 Problem: Given an array, check if any value appears at least twice. 🔥 Topics Covered: - Arrays - HashSet - Time Complexity (O(n)) - Space Complexity - Interview Tips 👨‍💻 Perfect for: - Placement preparation - Coding interviews - Beginners in DSA 📌 Watch till the end for the BONUS interview question! #ContainsDuplicate #DSA #CodingInterview #Java #Python #LeetCode #PlacementPrep #Algorithms