LeetCode 15: 3Sum in Java | Two Pointers + Sorting | Step-by-Step Explanation

Description: Learn how to solve LeetCode 15: 3Sum in Java using the Sorting and Two Pointer technique. LeetCode Problem: https://leetcode.com/problems/3sum/ In this video, we will understand: • 3Sum problem statement • Brute force vs optimized approach • How sorting helps us solve the problem • Two Pointer technique with left and right pointers • How to avoid duplicate triplets • Complete Java solution • Dry run with an example • Time and space complexity The goal is to find all unique triplets whose sum is equal to zero. Example: nums = [-1, 0, 1, 2, -1, -4] Output: [-1, -1, 2] and [-1, 0, 1] This is one of the most important Two Pointer and Array problems frequently asked in coding interviews at companies like Google, Amazon, Microsoft and Meta. Topics covered: LeetCode 15 3Sum 3Sum problem in Java 3Sum solution using Two Pointers 3Sum Java explanation Two Pointer technique Array problems in Java DSA interview preparation Coding interview questions Subscribe to LogicDhaara for Java, DSA, Backend Development and System Design explained from basic to advanced. #LeetCode #3Sum #Java #DSA #TwoPointers #CodingInterview #LogicDhaara