This can't be right. 10 s 4 se gets a distance of 10. But 10 se 4 ne gets a distance of 14.
I suppose I should point out this issue about that algorithm, on that subreddit, but I guess that can wait until I get home (and maybe think about this some more). Thanks, -- Raul On Monday, December 11, 2017, Jimmy Gauvin <[email protected]> wrote: > 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 > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
