LeetCode 1: Two Sum | Optimal Solution Explained (JavaScript)

Learn how to solve LeetCode Problem 1: Two Sum in JavaScript!

In this video, we’ll walk you through:

Problem Explanation: Understand the problem statement and constraints.
Examples: Step through sample cases to see how the solution works.
Brute-Force Approach: A simple but inefficient method with O(n²) time complexity.
Optimized Hash Map Approach: Solve the problem efficiently in O(n) time with an intuitive step-by-step explanation.
We’ll break down the logic, explore edge cases, and explain how to track and find the required pairs efficiently using a hash map. This tutorial is perfect for anyone preparing for coding interviews or looking to strengthen their problem-solving skills.

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⏱ Timestamps:
0:00 Introduction to Two Sum
0:46 Brute Force (Sub-Optimal)
1:20 Optimal Solution Explained
2:45 Code Implementation

Happy coding! 😊