it should be 3 or 4 kyu , it is too dificult for 5

every time that i thought i was done, i was not. then i saw other people's solutions and my code looks so ugly :(
was a fun time though.

yes

Haskell fork adding random tests

I was very suprisded that I was able to complete a 3 kyu problem! This was a fun question to do.

added for python

Merged

I don't quite understand your problem, but the rules should be the same for all ships.

Some of the bugs I faced in my solution happened only when a ship was on a bottom or right border of the desk. At the same time, fixed test don't test this (at least in Java). So I think it would be good to add such a test.

Do the rools work with all ships, or for submarines(unicellular) not? Because I wrote a code that checks if there is nothing around the ship(no contact with another ships) despite the fact it is unicellular or not(and if there is a contact, field is invalid), but I fail random tests(they want true, I have false). The only opportunity is that for submarins it works somehow another, can someone enlighten me?

IF you swap the positions of any of the special characters with each other, your solution won't notice -- among other false positive errors.

Of course a regex is not NECESSARY, but it is a very concise and clear way to solve the problem.

They're there. Maybe your browser or ISP is blocking them.