Advanced Problem Solving in 2D Arrays - 3 | Lecture 21

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Издатель Nov 28, 2022

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!

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Watch the Orientation Video: https://www.youtube.com/watch?v=YpNFgTKVAtU
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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

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