My results in thread

# advent-of-code

[Kroppeb]

My results in thread

[Kroppeb]

Lost some time in part 2 due to forgetting that reduce exists, and instead using a fold. Not using fold(data.first, data.drop(1), no that wouldn't have been good enough.

I went with

List<Int>?>(null){ acc, n ->
		if(acc == null)
			return@fold n
		acc.zip(n){a,b->
			if(a == 2)
				b
			else
				a
		}
	}!!

I first forgot the return@fold which is why the the !!. I should have listen to the compiler instead of getting that NPE getting shoved in my face

[Kroppeb]

full code

Untitled

[Kroppeb]

reading the result wasn't easy too

[Kroppeb]

All by all I ended 18/38 which is pretty nice
Might be able to get on the leaderboard by the end of the month

[karelpeeters]

Isn't that fold just find?

[Kroppeb]

It finds the first non 2 value for each cell. But AFAIK there isn’t a stdlib function to do the transposing first

[karelpeeters]

Ah right you're basically doing find over the entire grid at once, makes sense.

[Kroppeb]

Yep