Longest Subarray with Sum = 0 | Prefix Sum + HashMap Approach 🔥

📌 Problem 28: Longest Subarray with Sum = 0 | Prefix Sum + HashMap Approach
In this video, we solve the Longest Subarray with Sum Equal to 0 problem using an efficient Prefix Sum + HashMap technique. This is one of the most important array interview questions and helps you understand how prefix sums can be combined with hashing to optimize solutions from O(n²) to O(n).
🔹 Topics Covered:
Problem Explanations
Optimal Prefix Sum + HashMap Solution
Dry Run with Example
Time & Space Complexity Analysis
📚 Prerequisite Videos (Highly Recommended): ▶️ Problem 26 –https://youtu.be/d4D0wqDQw0w?si=KOwHy7zCikTVnVMD
▶️ Problem 27 – https://youtu.be/9OKUEr8ZY14?si=k6nSKeK_1Ah_e1q2
Understanding these two concepts will make it much easier to grasp the logic behind today's solution.
⏱️ Complexity:
Time Complexity: O(n)
Space Complexity: O(n)
💡 Key Concepts: #HashMap #PrefixSum #Arrays #DSA #CodingInterview #LeetCode #Java #ProblemSolving #CompetitiveProgramming #DataStructures #Algorithms #LongestSubarray #SubarraySumZero

Видео Longest Subarray with Sum = 0 | Prefix Sum + HashMap Approach 🔥 канала MetaFlame