Two Sum LeetCode Explained: Best O(n) JavaScript Solution with HashMap | Coding Interview Prep

Welcome to Info Studio!
In this video, we break down one of the most commonly asked coding interview problems — LeetCode Question #1: Two Sum.

🔍 Problem Summary:
You're given an array of integers and a target number. Your goal? Find the indices of two numbers that add up to the target.
But there's a catch — you can't use the same element twice, and there's exactly one solution.

🧠 What You’ll Learn:

How to solve Two Sum using JavaScript

The power of using a HashMap for constant time lookups

Step-by-step explanation of the logic

Time and space complexity analysis

Real interview-level tips for approaching array-based problems

📌 Time Complexity: O(n)
📌 Space Complexity: O(n)

✨ Whether you’re preparing for FAANG interviews or just starting your LeetCode journey, this video gives you the clarity you need.