C++ and DSA Foundation Course - Advanced Problem Solving in 2D Arrays - 3 | Lecture 21 | C++ and DSA Foundation course

After a series of classes on arrays, here we are with the final class. Hope that you are practicing the lecture problems and assignment questions. We recommend that you be regular with the classes and practice to gain the maximum out of these lectures. In this class, Urvi mam is going to cover the prefix sum concept-based problems on 2-D arrays. Interesting, isn't it? Let us meet in the class then! If you are facing any trouble accessing the assignment or lesson plan, please re-login to your account on PW Skills website and try. Are you finding the classes helpful? Stay tuned for more! Access the notes and assignments for this class for free at : http://bit.ly/3F5AWSQ If you are joining us late, to know more about PWSkills & plans : Watch the Orientation Video: https://www.youtube.com/watch?v=YpNFgTKVAtU Watch the Launch Video: https://www.youtube.com/watch?v=si8TKULKmLE Timestamps:- 00:00 - Introduction 00:13 - Recap 01:15 - Given a matrix 'a' of dimension nxm and 2 coordinates (l1,r1) and (l2,r2), return the sum of the rectangle from (l1,r1) to (l2,r2) 05:55 - Code 13:24 - Method 2 / Alternate approach 24:25 - Code 31:52 - Dry run 35:11 - Method 3 / Alternate approach 50:19 - Code 55:20 - Dry run 59:58 - Summary ▶️ PW Skills Website - https://pwskills.com ▶️ PW Skills Instagram - https://www.instagram.com/pwcollegewallah ▶️ PW Skills LinkedIn Channel - https://www.linkedin.com/in/pw-skills-136050249/ ▶️ PW Skills Telegram Channel- https://t.me/SkillsPW