Leetcode 1 🔥 Two Sum | NeetCode 150 Sheet | Java Optimal + Handwritten Dry Run

In this video, we solve Leetcode 1 - Two Sum from the NeetCode 150 DSA Sheet using Java. Neetcode 150 Playlist: https://youtube.com/playlist?list=PLsLlEdtakGozrvhxZsPfvXavXYzX2GUig&feature=shared DP Playlist: https://youtube.com/playlist?list=PLsLlEdtakGoyNROP7uWS9OLLHs9_JluVM&feature=shared Sliding window Playlist: https://youtube.com/playlist?list=PLsLlEdtakGozlKx_L-5PQJO-ua_maQb6R&feature=shared Binary Search Playlist: https://youtube.com/playlist?list=PLsLlEdtakGozNxx5rfRgEW-1DYseLnDbV&feature=shared We use the optimal HashMap approach to solve this problem in O(n) time and explain it using a complete handwritten dry run ✍️ on paper for better understanding. 🔥 What you’ll learn: - HashMap approach for Two Sum - Step-by-step paper explanation - Time complexity analysis - Clean Java code walkthrough 📌 Problem Link: https://leetcode.com/problems/two-sum/ 🎯 Level: Easy 💡 Topics: Array, HashMap, Java 👉 Don’t forget to like 👍, share ↗️, and subscribe 🔔 for more handwritten DSA content! #leetcode #neetcode150 #twosum #dsa #javaprogramming #handwrittennotes #placementpreparation #codinginterview