LeetCode 3948 Hard Solved | Lexicographically Maximum MEX Array | Greedy + MEX Explained

🔥 In this video, we solve LeetCode 3948 – Lexicographically Maximum MEX Array (Hard) using a clean and efficient Greedy + MEX approach in O(n) time complexity. We’ll cover: ✅ Problem intuition ✅ What “Lexicographically Maximum” actually means ✅ The key greedy observation ✅ Step-by-step explanation of the optimal approach ✅ Clean and simple C++ implementation ✅ Time & Space Complexity analysis 📌 Problem: LeetCode 3948 – Lexicographically Maximum MEX Array 💡 Key Concepts: Greedy Algorithm MEX (Minimum Excluded Value) Lexicographical Order Array Partitioning Efficient O(n) Solution If this video helped you, don’t forget to Like 👍, Share 📤, and Subscribe 🔔 for more LeetCode, DSA, Competitive Programming, and Placement Preparation content! #leetcode #dsa #cpp #competitiveprogramming #greedy #codinginterview #datastructures #algorithms