4 Sum Problem | Leetcode #18 скачать в хорошем качестве

4 Sum Problem | Leetcode #18

This video explains a very important programming interview problem which is the 4 sum problem.This problem can be solved using multiple techniques and algorithms.I have explained all the approaches using simple examples.I have explained 3 techniques.The first one is just by using simple set which is the brute force approach.The second technique is by using set with 2 pointer technique. This is the best approach in terms of time complexity. The third approach is by using hashmap.This solution iis better than the naive approach. CODE LINK is present below as usual. If you find any difficulty or have any query then do COMMENT below. PLEASE help our channel by SUBSCRIBING and LIKE our video if you found it helpful...CYA :) ======================================PLEASE DONATE============================= 🧡 SUPPORT OUR WORK:   / techdose   💚 UPI-ID: surya.kahar@ybl 💞JOIN Membership:    / @techdose4u   ============================================================================== INSTAGRAM :   / surya.pratap.k   LinkedIn:   / surya-pratap-kahar-47bb01168   WEBSITE: https://techdose.co.in/ TELEGRAM Channel LINK: https://t.me/codewithTECHDOSE TELEGRAM Group LINK: https://t.me/joinchat/SRVOIxWR4sRIVv5... ======================================================================= USEFUL LINKS: 🟠Must do TIPS to ACE Virtual Interview:    • 🔴Must do Tips to ACE your virtual interview   🟢Best strategy to excel your coding interview:    • 🔴Best strategy to excel your coding interv...   🟡Get your dream job in 1 month:    • 🔴Get your dream job in 1 month | 30 days P...   🔵How to crack dream job in just 2 months:    • How to crack dream job in just 2 months   🟣7 Days DSA plan: https://techdose.co.in/7-days-dsa-che... RELATED LINKS: Perfect subarray:    • Perfect subarray | Google Kickstart 2020 |...   Subarray sum equals K:    • Subarray sum equals K | Number of subarray...   CODE LINK: https://techdose.co.in/4-sum-problem-...