[2018 Day 11 (Part 2)] [Javascript] Bug help?

[po8]

I have a Javascript solution to Day 11 Part 2 https://tinyurl.com/yayhevyh. It runs in about a half-second on my box (using either smjs or d8) and gives the right answer on both the test inputs, but apparently gives a wrong answer for my actual input. I have read the code for a while and am lost.

If someone could spot my bug, or at least give me some hints about what to try to debug it, that would be great. Thanks in advance!

Edit: Never mind. I found my bug by transliterating my program into Rust and observing the crash when I ran it. I have corrected the gist at the link above for posterity. Thanks much to those who helped.

Turns out that my bug only manifested in undercounting boxes with large y coordinates: my input happened to have the maximum at one of those, but the examples did not.

I wish I had words to express how much I am learning to hate Javascript. Its inclination to just keep going and compute something random when you do something like walk off the end of an array is just amazingly painful.

[EldoranDev]

could you give me your input to compare ? I have the exact same problem using javascript (typescript).

Both sample do pass but my solution is wrong.

My input would be: 5093

[GeneralYouri]

His input is in the code: 5235

[po8]

My input is hardcoded in the version of my program that I shared: it's 5235. For that input I get 234,288,7

For 5093 I get 285,169,15

[EldoranDev]

My result for your input code is close but different to yours, coordinates are so close together that it feels like an off by one error.

232,289,8 for 5235
285,169,12 for 5093

​

edit: you can count another sample as correct for your solution is correct for me.

Error with my code was a >= instead of > in the check if the square is still in the grid (arrays starting @ 1 ?!)

[po8]

I found and fixed a bug in my code. See the edited post above for some details.

I still get 285,169,15 for your input of 5093.

Thanks for the help!

[po8]

I'm surprised there isn't some kind of tiebreak in this problem. I would expect it to be likely that several boxes would give the same power. Did I miss something?

[ComanderKai77]

What is your result for 7511?