LeetCode 75 C++ | Step-by-Step Solutions (LAN Academy) - LeetCode 1732 – Find the Highest Altitude | C++ Prefix Sum

In this video we solve LeetCode 1732 – Find the Highest Altitude using a simple and efficient prefix sum approach in C++. You are given an array `gain` where each element represents the change in altitude between two points on a trip, starting from altitude 0. Our goal is to compute the altitude at each step and return the highest altitude reached. Instead of storing all altitudes, we use a running sum (prefix sum) and track the maximum value on the fly. What you’ll learn in this video: - How to turn a wordy problem statement into a simple formula - How prefix sums / running sums work in practice - How to implement a clean O(n) C++ solution - How to reason about edge cases (all negative gains, zero gains, etc.) - Time and space complexity analysis This problem is perfect for: - Practicing prefix sums on arrays - Strengthening your C++ fundamentals - Building intuition for “running total” style interview questions If this video helps you: 👍 Like the video 💬 Comment which LeetCode problem you want next 🔔 Subscribe to the channel for more C++ and algorithms tutorials! Follow LAN Academy Website: https://lanacademy-school.thinkific.com YouTube: @lanacademy9521 Twitter: https://x.com/SolutionsLan #LeetCode #Cplusplus #Coding #Algorithms #LANAcademy #Programming #PrefixSum @reper #foryou #viral #reper #urmaritori #for