DSA in Java Lecture 2 | Two Pointers Explained with Notes | Pair Sum Problem

🔥 **DSA in Java Lecture 2 | Two Pointer Technique Explained with Handwritten Notes** In this lecture, we solve an important DSA problem using the **Two Pointer Approach**. 👉 **Problem:** We are given a sorted integer array Arr[N] and a target SUM. We need to find the total number of pairs (i, j) such that: Arr[i] + Arr[j] = SUM and i ≠ j --- 💡 **What you will learn in this video:** ✔️ Two Pointer Technique (Step-by-step) ✔️ How to solve Pair Sum Problem efficiently ✔️ Optimization from brute force to O(N) ✔️ Explanation with handwritten notes --- 🧠 **Why this is important?** Two pointers is one of the most important techniques asked in coding interviews (Amazon, Google, etc.) --- 📢 **Channel:** Code with Rahul Kumawat --- 👍 Like | Share | Subscribe for more DSA content 🔔 Turn on notifications so you don’t miss upcoming lectures! --- #DSA #Java #TwoPointers #CodingInterview #LeetCode #DSAInJava