LeetCode Daily Day 23 | Minimum Pair Removal to Sort Array II | Optimized Heap Solution (C++)

🎯 LeetCode Daily Challenge – Day 23 In this video, we solve Problem 3510: Minimum Pair Removal to Sort Array II using an optimized approach with a min-heap and linked-list style indexing in C++. Problem: https://leetcode.com/problems/minimum-pair-removal-to-sort-array-ii/description/?envType=daily-question&envId=2026-01-23 Solution: https://leetcode.com/problems/minimum-pair-removal-to-sort-array-ii/solutions/7518361/array-ii-looks-easy-until-brute-force-ti-tc5g This is the optimized follow-up to Array I and is commonly used to test: Greedy reasoning Heap optimization Lazy deletion techniques Boundary condition handling Simulation with performance constraints 🔍 What you’ll learn: Why brute force fails for larger inputs How to track bad pairs efficiently How to simulate pair removals without rebuilding arrays How to reason about O(n log n) solutions in interviews 📌 Language: C++ 📌 Approach: Min-Heap + Simulation + Lazy Deletion This explanation is interview-ready, clean, and step-by-step. 📧 Contact: [email protected] 📸 Instagram: @thebooleanbrain