HackerRank 2D Array - DS Explained - Java

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[hcadethc]

That's what I am talking about Nick, I love what you said about keeping going until you get to Google, I am trying man, these easy problems are not so easy or straight forward, but I am learning. Thanks a lot.

[chaosavenger]

For those following along in javascript, Number.MIN_VALUE is the smalled positive, non-zero number that can be represented in javascript so you would use negative max value (-Number.MAX_VALUE)

[snehangshuchakraborty]

Thank you so much Nick!! You just made it so simple!!

[musicjunkie]

That was nice dude. I always ignored the constraints section before watching this video.

[opalski]

Thanks a lot for your explanation Nick, its easy to understand than i'm searching in google.

[WarReDeeMeR]

How do you set up HackerRank to be in arrays not Lists in the editor.

[saifa.]

This would be O(n^2) correct? since youre nesting for loops. Is there a better way to do it where we can get a more optimal run time? I feel like in an interview itd look great if we could explain this this solution as the brute force solution then say theres a better one. But I could only think of this way.

[TDavisOfficial]

I'm just starting these challenges. I am a total newbie. But wouldn't one way to make it a little more efficient be to set the loop to return automatically if the sum is 63? That way if your input's first hourglass is seven nines you don't continue checking.

[perihan]

Thanks for explaining with easy steps! Done.

[aronhidvegi]

Why don't loop it through 4 times and you don't need length int for the rows and columns?

[mohammadyahya]

Hello Nick. Thank you for the videos. Please upload more Hackerrank videos.

[hinatamcr]

Thank you for teaching us the solution!! Subscribed!

[anirbansarkar]

wow, that min_val setting logic was awesome.🤐

[shadabhasankhan]

Damn ! That was really a good explanation.
Thanks

[Salesforce_Nexus]

Can you tell we why you have taken int column=arr[0].lenght instead of arr.lenght . i'll be glad if you can tell the difference.

[yungkazi]

Hey Nick, new subscriber here, I was just a bit confused on why you subtracted -2 on the rows and columns, is there any link I can check out to do some reading on that end, I get the rest it's just the -2 that's really throwing me off, appreciate it.

[penguimTwo]

I got

Exception in thread "main" 6
at



after copying exactly

[jordanaugust]

DS stands for data structure, my dude

[kaiserkonok]

DS stands for data structures and algorithm

[ShivamKumar-sczx]

Hi Nick, Can you help me solve a 2D array question!