Range Sum Query 2D - Immutable | Live Coding with Explanation | Leetcode - 304

Detailed explanation for range sum query 2d immutable leetcode 304.

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[fardeenmeeran]

This is a great example I really liked the diagram explanation helped me understand how the DP solution works. Thank you :')

[jatinbhatoya]

You always explains videos through animations which make the understanding easy. Thanks or you efforts

[Rahul-przr]

Great visual explanation! I tried a few other videos for this question but none of them were making sense. This was very helpful!

[neelsoni]

Really Most Easy and understandable Explanation thank you bhai

[gyanprakash]

Thankyou so much, such beautiful easy to understand solution.

[shubhamchourasia]

Having n square in constructor is fine but not in fetching sum value. Never thought this would be a test case. MiND BLOWN!

[RadGopalakrishnan]

Amazing clarity of thought. Keep going.

[naveenchebolu]

We are using same input matrix to store prefix sum then why space complexity is O(M*N) my thought is O(1) . Can anyone explain why it is not O(1) ?

[AmartyaAishwarya]

thanks for the awesome approach sir. learnt something new. I wonder how you become so good with DSA and consistent that you post daily leetcode challenge solution. Keep doing this great job, thanks a ton. I would love to know your story and how you became this good with DSA, what all resources did you made use of.

[soneshengg]

This was easy to understand, but it says "Immutable " arent you changing original matrix in this case? Also seemed weird how you again declared matrix .

[AmritAgarwal]

1283. Find the Smallest Divisor Given a Threshold