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๐Ÿ‘‰ 4Sum Problem Explained | LeetCode 18 #java #twopointers #codeprep #datastructure

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Nov 8, 2025
0:57

๐Ÿš€ Welcome to MDTech! In this video, we solve **LeetCode 18** โ€“ **4Sum** problem step-by-step using Two Pointer + Sorting approach in JavaScript and Java. Weโ€™ll break down the logic, handle duplicates efficiently, and implement clean, optimal code in both languages. ๐Ÿ” What Youโ€™ll Learn Understanding the 4Sum problem statement How to apply sorting and two-pointer logic Handling duplicates efficiently Writing clean, optimal code in JavaScript and Java Time and space complexity breakdown ๐Ÿ’ป Code Links: LeetCode Problem: https://leetcode.com/problems/4sum/ ๐Ÿ“š Related Videos 3Sum LeetCode Solution: https://www.youtube.com/watch?v=TSNhlV9ZXt4 LeetCode II โ€“ Two Sum - https://www.youtube.com/watch?v=TdBWJV8_zI4 ๐ŸŽฏ This video is perfect for: โ€ข Students preparing for FAANG / tech interviews โ€ข DSA learners improving problem-solving skills โ€ข Developers brushing up on Two Pointer techniques On this channel, you'll find: โœ… Beginner to Advanced DSA Tutorials (Arrays, Linked Lists, Trees, Graphs, Dynamic Programming & more!) โœ… Coding Interview Preparation (Google, Microsoft, Amazon, FAANG & top tech companies) โœ… LeetCode, CodeChef, HackerRank Solutions with in-depth explanations โœ… System Design & Competitive Programming Tips ๐ŸŽฏ Whether you're a beginner starting your DSA journey or a pro sharpening your problem-solving skills, this channel has something for you!๐Ÿ”” Subscribe now & start your DSA mastery journey today! ๐Ÿ“Œ Follow us for updates & extra content: ๐Ÿ“ฑInstagram: https://www.instagram.com/maheshrd999/ ๐ŸŒ LinkedIn: https://www.linkedin.com/in/mahesh-dharwad-b4839267/ #LeetCode #4Sum #MDTech #CodingInterview #JavaScript #Java #DSA #TwoPointers #LeetCodeSolutions #Programming

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๐Ÿ‘‰ 4Sum Problem Explained | LeetCode 18 #java #twopointers #codeprep #datastructure | NatokHD