3452 is lesser than 23453
>
>
> Dec 21, 2023, 15:19 by henryhr...@gmail.com:
>
>> I don't understand the problem statement.
>>
>> Henry Rich
>>
>> On 12/21/2023 10:17 AM, 'Viktor Grigorov' via Programming wrote:
>>
>>> Maybe
enry Rich
>
> On 12/21/2023 10:17 AM, 'Viktor Grigorov' via Programming wrote:
>
>> Maybe a table, summation and a sort using that:
>>
>> (/: ([:+/(>/]))) _10 1 10 20 _30 15 25 30 0
>> Can't imagine that being efficient, but it's better
> Not quite though. Had I 5 hands, that'd be !4 booleans.
>
>
> Dec 21, 2023, 14:11 by programm...@jsoftware.com:
>
>>
>> 1 0 0 1 0 /:~ i.5
>>
>> 1 2 4 0 3
>>
>>
>> On Thursday, December 21, 2023 at 09:03:34 a.m. EST, 'Viktor Grigor
Not quite though. Had I 5 hands, that'd be !4 booleans.
Dec 21, 2023, 14:11 by programm...@jsoftware.com:
>
> 1 0 0 1 0 /:~ i.5
>
> 1 2 4 0 3
>
>
> On Thursday, December 21, 2023 at 09:03:34 a.m. EST, 'Viktor Grigorov' via
> Programming wrote:
>
&
Hey,
Is there an easy way to sort an array with verb returning either 0 or 1, like
the comparison primitives?
The verb that I'd in mind relates to the 2023's advent of code's day 7: given
two equal length hands, which one has the first high card. Which one can write
as:
'K2345' ( 2 | 0 {
> condition?
>
> You might note that Henry Rich proposed the same solution to LdBeth's enquiry.
> He (HR) might understand what you're driving at!
>
> Cheers,
>
> Mike
>
> On 11/12/2023 17:09, 'Viktor Grigorov' via Programming wrote:
>
>>
A fully tacit solution would encapsulate the predicate too, here parenthesized
for emphasis:
($ #: [: I. [: (5&=) ,) (>:i.8)* 8 8 $ 1j2 # 1
4 1
4 4
4 7
Dec 11, 2023, 17:01 by programm...@jsoftware.com:
> I see Pablo has just replied, but here's a similar/same approach, as a tacit
> expr
Hey,
Excuse the possibly inappropriate title. Many projecteuler.net past the first,
say, 80 problems are or seem to be hard to brute force, at least the way I want
to write J code. For .https://projecteuler.net/problem=413 for example, the
below verb does the job, but 1e19 is a bit too big an i
Good point. Some here use version 601. The page diffs, as provided by the wiki,
are nice, but require too many clicks and parsing to be a quick reference. A
clickable version table in the top right of the page, opposite the ToC, say,
that uses links from the page's Wiki history would be suitable
changes the context of
> $: which means that it also changes the definition used for evaluating
> $: -- so you'll need to do something about that. There's several
> possibilities, and using a name for the $: phrase is one of those.
>
> I hope this helps,
>
> --
> Raul
Additionally, it's not exactly that variables are the issue, since inline verb
assignment gives the 5 2 2-shaped result as well
( (q=:...) @ (w=:...) ) 50 25 33 22 293
The definitions are 'correct' though, when used otherwise
(q@w) ...
--
Hey,
I have a bit of code I want to include into something large, but I'm hitting a
wall.
({:`([:$:0 1&+)@.(9&<@{.)@(([:*/"."0@":@{.),{:))"1(|:@,:1:))50 25 33 22 293
1 2 1 1 3
Okay. Slap on some parens, and it fails? Valence error for {:..? Both resolve
to 3, a verb, according to 4!:0. Beca
Hey,
While working on something, I came upon the following:
Why does
(|. &. ,) i.3 3
result in a domain error (likewise with &.:), while
($ $ (|. @ ,) ) i.3 3
doesn't?
The obverse of ravel hasn't changed, and the shape while unraveled hasn't
either.
-
support and test for a limited number of platforms, "musl" is not
> one of them.
> You can narrow down by removing the support of libgmp. J still works but
> without extended integer support.
>
> On Tue, 22 Aug 2023 at 12:53 PM 'Viktor Grigorov' via Programming
it, the extra performance, or
rather, the default one.
I don't know enough about standard library variants, nor low-level programming
to tell whether this is it. If any of you can tell at a glace I'd be mighty
thankful.
Aug 22, 2023, 04:23 by bbill....@gmail.com:
> Make files
Hey,
I cloned the jsource repository.
Checked out 9.5.0-beta5
Executed build_all.sh script in make2/ to successfully compile.
Executing the executable jconsole I get return code 134 with
JE has crashed, likely due to an internal bug. Please report the code which
caused the crash, as well as the
My twopence:
Worth confirming: did you mean syntax highlighting on wiki pages or for the
various text editors? Can't speak for jQt IDE.The answer for both is 'yes',
certainly for the simpler ones. Easier for the former, I reckon. Consider also:
should special combinations receive one color, that
I'd agree that examples are great, e.g., Rosetta Code is a great compendium of
programming language equiproblem solution comparisons. A comma-delimited
listing of would be too much, as there aren't that many J active users, at
least judging from the names I've seen past 2 years on the general an
Hello,
I'm getting 'length error, executing monad (i.x)&|' for
((i.3) & |."(0 _) ]) i.3
but not for
(i.3) ([ |."(0 _) ]) i.3
Why is that? Other primitive dyads work in rotate's place. Current nuvoc page
on rotate has nothing relevant. I well may be be missing something obvious.
-
I'd written a zsh script for querying
https://www.jsoftware.com/cgi-bin/forumsearch.cgi I could send it, if you'd
like.
May 13, 2023, 18:24 by earthspo...@gmail.com:
> Okay, found what I was thinking of by searching for my own name in
> Pipermail from the beginning.
> BTW - what's the best wa
Minor quip: the shell script in the general linux zip 'bin/install-usr.sh'
should include this line near the top
cd "$(dirname "$(readlink -f "$0")")" || exit;
or one to the same same, I'm not familiar with posix sh word splitting so I
overdo the quotes, hopefully not the opposite effect. This
ment of the nub; no extra mapping required.
>
> -E
>
> On Mon, 12 Sep 2022, 'Viktor Grigorov' via Programming wrote:
>
>> Hey,
>>
>> Whilst getting back to a Markov text generator in J, I quickly came to the
>> issue of all top-result verbs for histogr
Deleted too much: "One'd have to reshapre items appropriate, adding a
dimension, to deal with lists." is what I meant to write.
Sep 12, 2022, 07:50 by programm...@jsoftware.com:
> Hey,
>
> Whilst getting back to a Markov text generator in J, I quickly came to the
> issue of all top-result verbs
Hey,
Whilst getting back to a Markov text generator in J, I quickly came to the
issue of all top-result verbs for histograms, found querying the wiki and the
mailing lists, to be dealing with numeric types only. One'd have to reshape the
items appropriately to a new dimension. But if one has n-
Hey,
I am happy to announce the completion of the final draft, that is, the release
of the J904 reference sheet.
I don't want to repeat myself, I wrote about it somewhat in the link
belowhttps://code.jsoftware.com/wiki/User:Viktor_Grigorov/j90xrefsheet
I would hope that enough people have ide
Hey,
Thank you for the hearty feedback. I'll reply inline, for ease of reading.
Aug 15, 2022, 03:12 by artan...@comcast.net:
>
>
> Comments on draft J90X refcard (Version b.c1.pdf, with footnotes in each
> section).
> (JPJ refers to related comments of Jan Pietr-Jacobs on 12 Aug.)
>
> Format:
For those using xclip (xsel, and the like)
# 1. 1--100 LF sep'd; 2. something to ".
seq -w 100 | xclip
printf %s\\n '-1 -2 -3' '11 22 33' | xclip
". ;._1 LF,shell'xclip -o'
there are two other clipboards, would also ease selection, and forgo multiline
line in the console
Aug 10, 2022, 16:20
Possibly Germany, if you look at older STEM articles from mid 20. century they
used Gothic Blackletter script for sine and the rest trigonometric funs. \Re
and \Im are defined in article class and memoir, so they may well be old.
Aug 10, 2022, 00:28 by elro...@elronnd.net:
>
> I am curious whe
I initially wanted to do a plaintext version with ANSI C escape codes; and HTML
one; and the TeX one. The first proved very annoying after two tables; the
second very annoying given special/reserved HTML characters that should be
escaped, and the third almost likewise. An internal and official o
Butting in---why not 'code search', if that is what it explicitly facilitates?
And if not, then I'd say I've been misled.
Jul 29, 2022, 03:42 by programm...@jsoftware.com:
> Hi Ian,
>
> Thanks for the feedback and the topic list for future videos. Were you
> thinking of a documentary style form
I have
if.1=#e=.,(])`((is&(,@;))/)@.(1<#)([:(a:&~:#])<"1@(w(-.@([e.])#[)w((-.@((i.@#@])e.(([(=i.1:)])"0
1)))#])])@;@((1<#@>)#])@:,"2@((F=.<"1 frc q){]))y do.
I think this could still be valid if one uses an extra dimension without
boxing. The agenda's y is a list of boxes. After the empty ones a
I was on the right track going with 27, but it was indeed three times. From the
wiki: 3. Argument x must have the shape of a cell of m{y
The so the shape is 3 3, it seems which
9 9 $, (<"0 (3 3$__) ) ((1;1;Q;Q);(Q;Q;1;1);,(<1;Q;1;Q)) } <"0 i.4#3
Jul 23, 2022, 00:50 by programm...@jsoftware
Hey,
I just got to using scatter amend. I cannot figure out in what form it wants x
when everything is boxed. It whines about length. My case is:
y is boxed array of shape 3 3 3 3
m is a boxed array of shape 3, ultimately selecting 21 cells, a face, row, and
column (if you "9 9$," the y)
For x
Typos can make this unreadable, I apologize. Here it is corrected:
Looking through the code for my sudoku solver, I think I found the (or a)
reason why it wasn't working. I keep track of all unsolved cells' possble
values. If a cell gets solved, the cells of its face, row, column get updated
by
Hey, all,
Looking through the code for my sudoku solver, I think I found the (or a)
reason why it wasn't working. I keep tracking of all unsolved cells' possble
values. If a cell gets solves, the cells of its face, row, column get updated
by just removing the value just solved for using "e.". Ea
Thanks for the responses.
Hauke Rehr, I do enjoy exploration of approaches to a problem.
Ewart Shaw, your J-to-TeX is very impressive, although parameters for boxes
require some tweaking mysides at least. Keeping files separate requires
thinking about names and disallows quick edits, but keeps t
Thanks. I should have responded earlier with the solution we went with provided
from a tex stackexchange bloke:
\usepackage{listofitems}
\newlength\maxht
\newlength\maxdp
\newcommand\cbox[1]{%
\readlist*\mylist{#1}%
\maxht=0pt%
\maxdp=0pt%
\foreachitem\z\in\mylist[]{%
\setbox0=\hbox{\
In the attached image, which I hope actually get sent, you'll see 1. \fbox,
then a tabular with a 1 in the first cell and a tabular with a single 2 in the
second cell (more or less, the tex se q), a verbatim of the output of the of
<(<1),<<2 from jconsole, a tcolorbox failure and some other fail
Hey,
Should the circle function o. not be internally defined as an adverb similarly
to b.? Both do use their left argument only to define the action of the verb.
Should a similar argument be made about the conjuction cut ;. and its n, which
has only 8 possible values? What are the good reasons
I get domain errors for most of the values above 1e_11
May 17, 2022, 18:59 by rauldmil...@gmail.com:
> On Tue, May 17, 2022 at 10:22 AM 'Viktor Grigorov' via Programming
> wrote:
>
>> 9!:19 0.1
>> 9!:19 1.8e_5
>> ({.e.}.)"1 w
Then, I guess, this is a suboptimal way of solving the problem. Keeping track
of the digits in a seperate variable in a recursive tacit function seems like a
pain compared to being removing limitations on comparisons. 4--5 decimal places
is more than enough for this case.
May 17, 2022, 17:54 b
for tolerance, a 1 is not to be expected
>>> so what do you want to achieve, what do you expect and why?
>>>
>>>
>>> Am 17.05.22 um 16:22 schrieb 'Viktor Grigorov' via Programming:
>>>
>>>> Hey,
>>>>
>>>>
Here's my solution, working with remainders only, with the recursion happening
only on members past the first (which would correspond to the first digit in
the brackets in the notation used in the problem),
({{($:`(<:@#))@.({.e.}.)y=.((1&|@%@{.),])y}}@(1&|)@:%:)
Given I'm not using extended pre
Hey,
I'm working on project euler 80, and I'm getting stack errors. Tracing the
values, step by step, everything is in order, other than the comparison. I have
the following:
]w=:{{ ((1&|@%@{.),])y }}^:(>:i.5) @(1&|)@%: 23
0.256547 0.795832 0 0 0 0
0.897916 0.256
Hey,
Swell idea and implementation. I want to make a new or myown j90x reference
sheet, and have on using TeX in the works. But I also wanted to do a html
version, an ascii version, an ANSI C escape codes version, and possibly and md
version. I also wanted to do a J verb that would spit out eit
Thank you, Raul, you gave me a few ideas with this. The first was to do the
properly renew all could-be numbers after each amend. Getting only the the
indices of the cells with could-be numbers of the face, row, column of a
particular cell would be a hassle, so it just looks for cells with >1 el
Hello,
I would like to share my progress with the sudoku solver I started awhiles
back. I combed and tested every line, I discovered a major mistake, namely
indices of a wrong face of the 3 3 3 3 mat, one not corresponding to one of the
9 big squares (when shaped as 9 9). I'm still disappointed
Thank you for that, I see the issues in my attempt.
Two comments perhaps more pertinent to the people attempting to revitalize the
wiki: how is one to know:
- that arbitrary(?) base numberal to decimal exist, matching the regex
'\d+b_?\w+'?
- how is one to know of the existence of hdf/dfh?---I d
end.
> x{.y,x#{.a.
> }}
>
> FYI,
>
> --
> Raul
>
> On Wed, Feb 2, 2022 at 6:51 AM Raul Miller wrote:
>
>>
>> On Wed, Feb 2, 2022 at 4:41 AM 'Viktor Grigorov' via Programming
>> wrote:
>> > I wanted to see if J could be faster
Hello,
I wanted to see if J could be faster than bespoke C programs (specifically
aircrack-ng, ~10k/s on my machine).
From the wiki pages for SHA1 (turns outs there exists a foreign so I dropped
it), HMAC, and PBKDF2I assembled:
sha1=:1&(128!:6)
bs=:512%8 NB. block size in bytes for md5, sha1, sh
Hello,
Recently I saw an article in lobste.rs
(https://www.hillelwayne.com/post/sudoku/) about sudoku solving, and though t,
"it'd be nice to try it J". (Didn't even bother reading it, but later glancing
at it found the author had used J in the end. :D)
I reshape a list of integers of length 8
Nabble-fora are in a sickly state, refusing full perusal, so excuse me if
this's been answered..
I wanted an x-dimensional y-rank identity matrix.
With an auxilliary verb to get a main diagonal from an arbitrarily-dimensional
square array verb:
md=: (|:~(<@i.@#@$))
I assured the following verb
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