Here's the parsing routine I used for day 1:
parse=: {{ +/@(__&".;._2);._2 (y,LF) rplc LF2;LF,'/'}}
Its y argument would be the raw text of the input.txt provided for day 1.
I hope this makes sense,
--
Raul
On Fri, Dec 2, 2022 at 11:36 AM Jaume <greenni...@gmail.com> wrote:
>
> Hello all
>
> I've been trying to dabble in J for quite some time, but I still haven't
> got the hang of it, so I'm trying (not for the first time) to go in deep
> trying to solve each day.
>
> Alas sometimes it feels like hitting my head against the wall, and so I
> come to you with what I tried and what I lack to end the problem. Let's
> start.
>
> On day 1 we have an heterogeneous array, and we have to get the elf who
> carries the most calories.
>
> Using the example I can solve it for both parts of the day, using a boxed
> array.
>
> in=: 1000 2000 3000;4000;5000 6000;7000 8000 9000;10000
>
> {. \:~>+/ each in
>
> 24000
>
> +/ 3 {. \:~>+/ each in
>
> 45000
>
> I can read the data from a file and I can also format it like in the
> instruction above
>
> p =: 1!:1<'test.input'
>
> p rplc (LF,LF);';';LF;' '
>
> 1000 2000 3000;4000;5000 6000;7000 8000 9000;10000
>
> But how do I go from one representation to the other? Or if there's another
> way to do this transformation I'm all eyes.
>
> I know that that is a string, and I know that numbers are different and I
> know of ". to transform to numbers. I don't know how to partition the input
> on something.
>
> Thanks.
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