Check if There is a Valid Partition For The Array - Leetcode 2369 - Python

Solving leetcode 2369, Check if There is a Valid Partition For The Array, todays daily leetcode problem in august 12.

0:00 - Read the problem
0:30 - Explaning Memoization
6:23 - Coding Memoization
11:50 - Explaining Bottom-up DP
16:03 - Coding DP

leetcode 2369

#neetcode #leetcode #python

[amanaryan]

Excellent explanation!!!! Keep uploading daily leetcode problems and if possible weekly and biweekly contests too. It'll be very much helpful!!!!

[purna]

Hi, sir, this is Purna from India, I always watch your videos for the problem-solving,
"Wow, this video is an absolute gem! The way it breaks down the complex problem into easy-to-understand segments is truly impressive. The visuals are captivating, and the narration is clear and engaging. I learned so much from watching this – it's evident that a lot of effort and research went into creating such a valuable solution. This is definitely going into my 'favorites' playlist, and I can't wait to share it with my friends. Keep up the fantastic work!"

[Hi-qhen]

It would be great if you could explain some of the Q4’s on the weekly/biweekly contests. I can never usually solve them but I can (usually) solve the average hard question.

[ShivendraSingh]

That's a really nice explanation, I checked 3 different explanation for bottom up but yours is very simple and intuitive!

[massimomonticelli]

Hey NeetCode! How are you doing?
In the top-down implementation, we can make an optimisation: if the first dfs returns true, there is no need to run the second one. So in line 13, I would add this condition:
if !res and i < len(nums) - 2:
Also, we can change line 16 to res = dfs(i + 3), as we already know res has been set to false, if we are going to execute this expression.
Thanks for your amazing video!
Massimo.

[kareemadesola]

Awesome to see both bottom-up and top-down approaches. Keep it up

[chaopeter]

Today completed by myself haha, no need to watch your video😁

[rumonintokyo]

didnt really understand the dp caching thing part... do you have any other video that explains caching better ?

[FRChang-go]

Thanks for sharing such a excellent video!!

[yang]

Do you use your Microsoft surface to draw on during interviews?

[parashararamesh]

Ever considered using manim for animations? Might look prettier and like 3b1b

[mohakparekh]

Can someone tell me why are we not returning true when we find one valid partition. Like in [4, , 4,, 4, 5, 6] we have [4, , 4] as valid partition but still we go and check for the partition [4, , 5, 6]. Why is this needed?

[ErtjonMecka]

I wonder how the solution would change is we have to check the string in a circular way. e.g. 74456

[satyabharadwaj]

I could solve it the brute force but it fails with time limit. Can someone explain how caching works here?

[phpostrich]

The bottom up dp part of the video, I could not follow