Java Challenge (Some instruction for me)

Question

Someone help me, show me some tips i should remeber to complete this challenge ??

https://app.codesignal.com/challenge/9fuJnSPZspRBW9Z7E?fbclid=IwAR0lsWAsIfbq7jF9QBlwnXar701SIcegNXc13wm6QuYiTmfPaJth3NqXgTU

Answer 1

I would start here:
https://www.sololearn.com/learn/Java/2149/?ref=app

Learn how to create a 2d matrix and how to print it using a nested for loop.

Then learn how to get each neighbour.

After that you should be able to solve this challenge.