Hi,
I used axial coordinates from https://www.redblobgames.com/grids/hexagons/
to get thru part 1.
Will do part 2 tonite.
>./ | +/hxv {~ dbd i. <;._1 ',', dbi
675
where :
dbi=: }: fread 'C:\Downloads\day11inp'
dbd=: ;:'n s ne nw se sw'
hxv =: 6 2 $ 0 _1 0 1 1 _1 _1 0 1 0 _1 1
dbd,.<"1 hxv
┌──┬────┐
│n │0 _1│
├──┼────┤
│s │0 1 │
├──┼────┤
│ne│1 _1│
├──┼────┤
│nw│_1 0│
├──┼────┤
│se│1 0 │
├──┼────┤
│sw│_1 1│
└──┴────┘
\ n /
nw +--+ ne
/ \
-+ +-
\ /
sw +--+ se
/ s \
On Mon, Dec 11, 2017 at 12:43 PM, Raul Miller <[email protected]> wrote:
> I've been struggling with AoC day 11 - either AoC's implementation is
> wrong, or mine is.
>
> Here's my implementation:
>
> nms=: ;:'n ne se s sw nw'
> dir=: ^j.2p1*(%~ i.)#nms
>
> delta=: dir {~ nms i. ]
>
> location=: +/@delta
> furthest=: [: ({~ (i. >./)@:|) +/\@delta
> path=:3 :0
> nms {~(|: i."_1 <./)|dir -/ 2-/\(- dir&([ {~ [: (i. >./) +/
> .*&.+.))^:(0.5 <|)^:a: y
> )
> showpath=:3 :0
> p=. path y
> echo 'steps: ',":#p
> echo (":,.#/.~p),.' ',.>~.p
> )
>
> And here's a translation to python along with a request for help:
>
> https://www.reddit.com/r/adventofcode/comments/7izym2/
> 2017_day_11_solutions/dr36ujj/
>
> I suppose I might retranslate the python implementation of path back
> into J, but they both give the same answer, so I'm convinced that
> that's not the issue.
>
> So far, it's only been a few hours, but I've not gotten any real
> feedback from reddit, and I've gone over this enough times that I'm
> convinced that if I screwed up I've got such a big blind spot that I'm
> not going to see through the problem today.
>
> Anyways... if anyone else has some insight here (and/or a better
> implementation), I'd love to see it.
>
> Thanks,
>
> --
> Raul
> ----------------------------------------------------------------------
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----------------------------------------------------------------------
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