DSA in Python Course – Leetcode 18: 4Sum Problem – Part 45 [Hindi] | Code & Debug

Welcome to Part 45 of Code & Debug’s DSA Python Course!

In this lecture, we will solve Leetcode Problem 18: 4Sum, an extension of the 3Sum problem, requiring efficient two-pointer and sorting techniques to find quadruplets that sum to a target value.

📚 What you’ll learn in this video:
✅ Understanding the problem statement and constraints
✅ Brute force vs. optimized three-pointer approach
✅ How to handle duplicates efficiently
✅ Step-by-step Python implementation
✅ Time and space complexity analysis

💡 This problem is crucial for mastering advanced array manipulation and two-pointer optimization techniques used in competitive programming.

👉 Link to solve this question:
https://leetcode.com/problems/4sum/description/

👉 Refer the article below for better understanding:

4Sum | Leetcode 18 | Explained in Python

👉 📄 Access the full YouTube DSA Playlist Sheet (All Questions in Order):
🔗 https://docs.google.com/spreadsheets/d/1AWE15Fy3wD2iqu2vjK_R7cCiuvSsjYQclcdZmHpF66o/edit?usp=sharing

👉 Enroll in the free DSA Python course here:
https://codeanddebug.in/course/master-dsa-with-leetcode

👉 Enroll for Self-Paced Advance DSA course here:
https://codeanddebug.in/course/zero-to-hero-python-dsa

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