The Nineteenth Byte

AdmBorkBork

14:00

JS-hell?

7

Xynos

@AdmBorkBork

Sounds like it

Nathan Merrill

if it has the added benefit of antagonizing the JS community, I'm ok with that

Neil

@LeakyNun isn't that 2 bytes in Jelly: Ụị? Try it online!

Leaky Nun

@Neil :o til

caird coinheringaahing

@LeakyNun What was your solution?

Leaky Nun

14:09

@cairdcoinheringaahing interleave-sort-transpose-last element

caird coinheringaahing

CMC: Given a string, remove all whitespace (spaces, tabs and newlines) from that string. Example: "\n\t Hello, \nWorl\td! " => "Hello, World!"

DJMcMayhem

@cairdcoinheringaahing V, two bytes: Íó

Oh wait

caird coinheringaahing

Also, current sequence for the OEIS challenge: "Local stops on New York City A line subway." I hate OEIS

DJMcMayhem

V, three bytes: Íßs

caird coinheringaahing

@DJMcMayhem How does that work?

DJMcMayhem

14:17

Translates to :%s/\_s//g<cr> in vim

caird coinheringaahing

@DJMcMayhem Sorry, I don't speak vim either :(

DJMcMayhem

That's fine

mbomb007

@ATaco Why? Python is probably the top golfing language

And by "top" I mean "most used"

DJMcMayhem

@cairdcoinheringaahing :%s/foo/bar means on every line, replace foo with bar. \_s means a whitespace character including Newlines, and we're replacing it with nothing (cause the //). The g just means replace multiple occurrences on the same line if you need to, and <cr> actually executes the command (cause : means shell mode)

Xynos

@mbomb007 codegolf.meta.stackexchange.com/a/13946/72131 should i post this and we can see?

Neil

14:22

@cairdcoinheringaahing Retina, 3 bytes: `\s

`

Funky Computer Man

@Shaggy I took latin for 4 years but never realized it was per se and not per say. :P

AdmBorkBork

@cairdcoinheringaahing PowerShell, 18 bytes -- -join-split"$args" Try it online!

Actually, I think you can ignore the quotes

Poke

does windows come with any japanese fonts

trying to confirm that the yen symbol is the same bitsequence as a backslash

in a japanese font

Pavel

@Poke Yes it is the same sequence.

Source: Accidentally set system locale to Japanese some time ago.

Poke

14:38

that's really annoying

Pavel

C:¥Users¥Pavel¥git¥jansi¥

CMC: Given an int array, add it with its reversed self: [2, 5, 9, 14] => [2, 5, 9, 14] + [14, 9, 5, 2] => [16, 14, 14, 16]

Leaky Nun

CMC: given positive integers n and r, where n>r, find the number of ways to put n distinguishable balls into r distinguishable boxes, with each box having at least one ball

@Pavel Jelly, 2 bytes: +U

@Pavel Pyth, 3 bytes: +V_

AdmBorkBork

14:54

@Pavel PowerShell, 27 bytes -- param($a)$a|%{$_+$a[-++$i]} Try it online!

Leaky Nun

@Pavel Python, 38 bytes: lambda a:[*map(int.__add__,a,a[::-1])]

@Giuseppe hi

Pavel

@LeakyNun Mathematica, 17 bytes: Binomial[#2,#-#2]

I think

Leaky Nun

@Pavel I don't think that's right

Pavel

Yeah the more I think about it the wronger it looks

Leaky Nun

@Pavel R, 24 bytes: print((n=scan())+rev(n))

Giuseppe

14:57

@LeakyNun I think cat is sufficient here

Pavel

@LeakyNun Mathematica, 9 bytes: #2^(#-#2)

Leaky Nun

@Giuseppe hmm?

Pavel

Seems more correct

Leaky Nun

@Pavel I don't think that's right: with each box having at least one ball

Giuseppe

@LeakyNun rather than print

Leaky Nun

14:57

@Giuseppe oh ok

Pavel

Isn't it? We subtract #2 from # to account for each box containg at least one ball.

Then we multiply #2 by itself for each remaining ball

Leaky Nun

@Pavel you can't pre-choose which ball is the "at least one" ball

Pavel

Oh yeah, right.

Giuseppe

@Pavel MATL, 3 bytes: tP+

AdmBorkBork

@LeakyNun This is tricky.

Leaky Nun

15:04

@Pavel Actually, 4 bytes: ;R♀+

@Pavel Brachylog, 6 bytes: ↔;?z+ᵐ

@ATaco is your tio cmc button working?

Pavel

@LeakyNun Mostly, but it dies when it needs to escape backslashes

AdmBorkBork

It's like n!/r!-(n-r)! ???

Leaky Nun

@AdmBorkBork it isnt

@Pavel oh nvm thanks

AdmBorkBork

Hmm. I must not be remembering my "n choose k" formulae

Leaky Nun

@AdmBorkBork that is correct for n choose r

n!/r!(n-r)! though, no minus

Neil

15:07

@LeakyNun 35 bytes: remove the [* and ]

Leaky Nun

@Neil tried, it returns a map object

AdmBorkBork

Right, but it's not a simple n choose r

because they're distinguishable

Neil

>>> f=lambda a:map(int.__add__,a,a[::-1])
>>> f([1,2,4,8])
[9, 6, 6, 9]
>>>

caird coinheringaahing

@Neil Yeah, but that's Python 2. Leaky doesn't like Python 2

Pavel

@LeakyNun I think this might work: (#2^(#2-#))/(#2-#)!*#!)&

Neil

15:10

well then he should have said Python 3 :-P

Pavel

Or $\frac{b^{a-b}}{\left(b-a\right)!}\cdot a!$

Leaky Nun

@Pavel what does a=7,b=3 give?

Pavel

Opens W|A

GODDAMMIT

I think it might need to be $(a-b)!$

Leaky Nun

@Pavel it isn't

Pavel

It is definitly not.

Leaky Nun

15:16

@Pavel Jellyfish, 7 bytes: p+R¶ Ei

let's see whether you come up with a solution before I finish doing your CMC in 10 languages

Pavel

Hmmmm

Leaky Nun

Jelly, Pyth, Python, R, Actually, Brachylog, Jellyfish

Pavel

Binomial[#-1, #2-1] works for indistinguishable balls

So to account for the balls being distinguishable... Binomial[#-1,#2-1]#! works?

Leaky Nun

@Pavel no, balls in the same box have no order

Neil

@LeakyNun just to clarify, the easy case without the minimum is just rⁿ?

Leaky Nun

15:20

@Neil yes

Pavel

@LeakyNun So then it's Binomial[#-1,#2-1]#2!.

Leaky Nun

@Pavel balls in the same box have no order

Pavel

Yes

Leaky Nun

@Pavel J, 3 bytes: +|.

@Pavel justify your solution

Pavel

To be clear, [a, b], [c] != [c],[a,b]? For 3 balls, 2 boxes.

Leaky Nun

15:23

wtf

@Pavel right

AdmBorkBork

@LeakyNun 10/10 best snek

Pavel

Nope i'm wrong again Binomial[#-1,#2-1]#2! doesn't treat [a,b] and [b,a] as the same but it does treat [a,b],[c] and [a,c],[b] as the same thing

Crud I GTG

;-;

@LeakyNun I think you should post this to main, but on math.se

Leaky Nun

@Pavel nah, i got this from math.se

Lembik

here is a fun coding/golf challenge for those who like web things

starting at theguardian.com/film+tone/reviews , print out the name of every film ever reviewed with its star rating as a number

Leaky Nun

@Pavel 05AB1E, 2 bytes: R+

HyperNeutrino

15:29

@LeakyNun I was going to ask if you meant U+ and then I realized that it wasn't Jelly :P

Lembik

would that make an acceptable challenge?

or more suitable for the chatroom?

HyperNeutrino

wtf is this even: oeis.org/A000214

@LeakyNun I think I got a proof for the group theory problem

I was looking at it backwards by trying to show that for group G and H1, H2 < G with H1 as a proper subgroup and H1 union H2 = G that H2 would be unclosed, but it was easier backwards :P

Leaky Nun

@HyperNeutrino hmm?

HyperNeutrino

Like I just showed that for group H1 and H2, in order for H1 union H2 to be closed, one of them had to be a subgroupeq of the other

like let's say we have group H1 and H2 and G = H1 U H2

associativity, the identity property, and the inverse property of G are all trivial to show since H1 and H2 have these

Sherlock9

@LeakyNun Is it C(n-1, n-x)?

So (7, 3) would work out to C(6, 4) = 15

Leaky Nun

15:35

@Sherlock9 no it isn't

the balls are distinguishable

Sherlock9

Well, it isn't C(x+n-1,n)

HyperNeutrino

and since if either group is a subgroup of the other then the union will be the group of higher order thus making it not a proper subgroup of the union, then $\exists x\in H_1[x\notin H_2]$ and $\exists y\in H_2[y\notin H_1]$

Leaky Nun

@Sherlock9 it isn't

MD XF

@Pavel that's a bug

New Main Posts

-3

Q: A java method that identifies the ip address

I want a java method that reads the IP address from the user and identifies the class A,B,C OR D

java

HyperNeutrino

15:41

so then we let $x\in H_1$ and $y\in H_2[y\notin H_1]$

Leaky Nun

Tramontane review – musical road trip untangles trauma of Lebanese civil war
3
In Between review – flatmates crash the cultural boundaries
4
On Body and Soul review – bizarre and brutal tale of lovers in the slaughterhouse
4
Our Last Tango review – passion and pain in tango doc well timed for Strictly season
4
In the Last Days of the City review – adrift in Cairo as the Arab spring looms
3
Lawrence of Arabia review – David Lean's sandy epic still radiates greatness
5
The Lego Ninjago Movie review - zippy spinoff brings familiar, forgettable fun

@Lembik

HyperNeutrino

Then $xy\in H_1\cup H2\therefore xy\in H_1 \text{ or } xy\in H_2$

$xy\in H_1\implies x^{-1}xy\in H_1 \implies ey\in H_1 \implies y\in H_1$ which is false $\therefore xy\in H_2$

Leaky Nun

@HyperNeutrino we say $y \in H_2 \setminus H_1$

@HyperNeutrino nice proof

HyperNeutrino

not done yet but oh ok

and then $xy\in H_2\implies xyy^{-1}\in H_2\implies x\in H_2\therefore\forall x\in H_1[x\in H_2]\therefore H_1\subseteq H_2\therefore H_1\cup H_2=H_2\space QED$; you could say the same for the reverse

I think that's how it goes? @LeakyNun

Sherlock9

@LeakyNun My first instinct was right: Stirling numbers of the second kind

HyperNeutrino

15:56

anyway gtg now o/ and thanks for the hints @Leaky :D

Leaky Nun

@Sherlock9 looks right to me

@HyperNeutrino ok

Lembik

@LeakyNun that's great.. how did you do it?

Leaky Nun

@Lembik Retina

Lembik

@LeakyNun shouldn't you have replied "Retina, see"

(sorry.. pun)

Leaky Nun

lol

Lembik

16:03

@LeakyNun can you get them all that way? That is on all the pages

Leaky Nun

@Lembik I used the source code

Lembik

@LeakyNun I suppose you would need to follow links in that case

Leaky Nun

@Lembik why?

Lembik

@LeakyNun there are pages and pages of reviews

837 pages it seems

Leaky Nun

nvm then

Lembik

16:06

why nevermind?

Leaky Nun

@Lembik I only dealt with page 1 obviously

Lembik

oh right

well you were most of the way there I think

how did you get the star ratings from the one page?

I mean, what did you regex for?

Leaky Nun

I used the source code

golden stars and grey stars

Lembik

ah ok

Leaky Nun

<h1 class="fc-item__title"><a href="https://www.theguardian.com/film/2017/sep/22/tramontane-review-vatche-boulghourjian" class="fc-item__link" data-link-name="article"> <span class="u-faux-block-link__cta fc-item__headline"> <span class="js-headline-text">Tramontane review – musical road trip untangles trauma of Lebanese civil war</span></span> </a></h1>
<div class="stars" role="presentation">
<span class="inline-star inline-icon star__item star__item--golden">
<svg width="14" height="13" viewbox="0 0 14 13" class="star__item__svg star__item--golden__svg inline-star__svg inline-icon__svg">

Lembik

16:08

got it

so if your code can turn to the next page it can do the whole thing I think

saving me hours this evening :)

Leaky Nun

heh, I'm out :P

Lembik

booo :)

I realised it's even easier thanI though

the url has page=400 in it

would you mind sharing your code please?

Leaky Nun

oh it isn't really one code...

it isn't fully automated

wait lemme write the code again

Lembik

thanks

Downgoat

Question: why do a bit shift with 0? Doesn’t that not do anything e.g. (x << 0)

AdmBorkBork

16:18

Implicit casting?

J. Salle

Hey guys, the latest answer to the OEIS answer-chaining challenge yields a sequence that was already answered, can someone comment on that? I don't have enough rep >.>

HyperNeutrino

@J.Salle I'll do it; gimme a sec

Are you sure 214 has been done?

J. Salle

Nope, that was my bad. I was sorting wrong

It was sorting for active

HyperNeutrino

ah ok

use the code snippet :P

Leaky Nun

G`<span class="js-headline-text">[^<]+</span>|<span class="inline-star inline-icon star__item star__item--golden">
m`^.+text">|</span>.+$

<span class="inline-star inline-icon star__item star__item--golden">\n?
1
1+
$.0¶

@Lembik

Neil

16:29

in JS, >>>0 is particularly useful to cast to 32-bit unsigned int

Lembik

16:39

cool

@LeakyNun

much simpler than I thought

AdmBorkBork

@FunkyComputerMan How does Answer-Chaining Fibonacci not have harder answers as the challenge progresses? You seem to be confusing "harder to answer" with "higher quality" which isn't necessarily the case.

AdmBorkBork

16:52

Or maybe I'm not understanding your argument.

Funky Computer Man

@AdmBorkBork I don't see how it becomes harder over time. Perhaps you might need to explain that to me

AdmBorkBork

Each answer reduces the available character set by one.

Funky Computer Man

Oh I thought it was a net of zero

I see

I'll update my answer to reflect that.

muddyfish

17:31

@EriktheOutgolfer I'm not sure what you mean

Erik the Outgolfer

yeah me neither

I meant something like "cycle arguments" or something for a builtin, but I'm pretty afraid that's not possible

e.g. (something)J (replace (something)) would be the same as RJ if J takes two args

muddyfish

No, that's not possible. I'm using R for that. It's just so you can save a byte on the close quotes?

Erik the Outgolfer

but would be considered like one token

@muddyfish hmm...

yeah

also

> just

something like (builtin)"string at the end of the program but I'm afraid it's impossible

muddyfish

I think I could do that?

Basically a R that hooks onto the next node?

TuxCopter

wtf is that site

AdmBorkBork

17:43

Oh you found out about time cube!

I keep forgetting how young most of this room is.

Erik the Outgolfer

@muddyfish yeah, but not eval_literal, just one item

eval_literal will break it I guess

AdmBorkBork

17:58

@TuxCopter Next we'll need to introduce you to Dancing Baby, Homestar Runner, End of the World, Charlie the Unicorn, Bill Gates' Email Beta Test ....

J. Salle

18:12

@AdmBorkBork Charlie the Unicorn is pure gold.

caird coinheringaahing

@AdmBorkBork It's from 1880. How old are you? :P

(you don't have to actually tell me)

AdmBorkBork

@cairdcoinheringaahing Get off my dirt, you kids! (see, cuz the lawn hasn't grown yet)

@cairdcoinheringaahing I'm almost half again as old as Magic Octopus Urn

mbomb007

@Xynos "most used" not "most accepted"

DJMcMayhem

@AdmBorkBork Half again? As in 150%?

mbomb007

If you're going to host a KOTH, as the discussion was about, you want answers to be in a language that is common and easy to program in. There's a reason nobody hosts KOTHs where the answers are required to be in Pyth or Jelly

2

AdmBorkBork

18:24

Right

DJMcMayhem

That means you're also almost twice my age. :P

AdmBorkBork

Yep.

Neil

tries and fails to work out which way around the 150% is being applied

also, I have bad eyesight and/or fonts, so I always used to think his nick was Um

caird coinheringaahing

@mbomb007 That reminds me. I need to work on my Jelly KoTH.

@AdmBorkBork Are you ~37?

AdmBorkBork

@cairdcoinheringaahing That's why I said "almost." I'm turning 36 in two months.

mbomb007

18:38

On Gaming.SE, two answers to the same question were posted at the same exact second. gaming.stackexchange.com/a/318493/115693

They also contained the same answer material, and they currently have the same net vote count.

John Dvorak

Talk about answer sniping

AdmBorkBork

Samurai'd

yesterday, by AdmBorkBork

Over on Arqade, these posting times and vote counts are the same link.

mbomb007

But it doesn't look like anybody noticed it when you posted it

AdmBorkBork

Nope. It was tossed into a sea of nothingness.

mbomb007

I guess it drowned in the discussion about the regex challenge website I brought up

AdmBorkBork

18:43

Likely that, too.

Poke

According to the share link, this answer has id 318493, while the other answer has id 318494, this answer must be the first one posted — Ferrybig 12 hours ago

G.G

Mayube

evening folks

caird coinheringaahing

19:03

@AdmBorkBork opens "PPCG user information" folder, goes to "AdmBorkBork", files in age Almost complete now :P

Also what is the policy on calling people by their real names in chat?

Erik the Outgolfer

@mbomb007 yay let's upvote the second answer just to make the scores equal! :p (p.s. please don't it's abuse)

John Dvorak

But then again you probably won't get banned for voting based on score

Erik the Outgolfer

heh "it's just one answer!" I'd feel guilty if I do that just for the sake of equalizing the votes

AdmBorkBork

@cairdcoinheringaahing That crossed from the "funny" into the "creepy" category, because I could see someone doing that.

caird coinheringaahing

@AdmBorkBork I can assure you that I don't do that

Erik the Outgolfer

19:07

and if he did that, then...I don't know if we'd still call him by his username for long

caird coinheringaahing

Someone please change the subject

Erik the Outgolfer

agree

John Dvorak

CMC: given three parallel lines a,b,c and three points A,B,C on line a, construct a point D on line a such that |AB| = |CD| and |AC| = |BD| using only a straight-edge and no compass.

Erik the Outgolfer

CMC: Swap case of some chars

John Dvorak

@EriktheOutgolfer cv: unclear

Erik the Outgolfer

19:10

@JohnDvorak sorry lost you on the first sentence! :p

@JohnDvorak testcase:

"aaAAyAYyaUSUS", [1, 2, 4, 8, 11, 13] -> "AAAayAYYaUsUs"

(1-indexed)

generally swap the case of the chars at specific indices

John Dvorak

That's better. But I still prefer my CMC.

Erik the Outgolfer

but...your cmc has some unobservable requirements ("using only a straight-edge and no compass")

not that mine is perfect

AdmBorkBork

@JohnDvorak How the deuce can you do that without a compass?

John Dvorak

It's language specific, so it's objective

@AdmBorkBork It's possible. You have two extra lines to work with.

dzaima

@EriktheOutgolfer SOGL, 8 bytes: {⁴WSF1ž_

Nick Clifford

19:15

so I have a Chinese exchange student at my house

his school has a programming course, but they have to use Visual Basic

Erik the Outgolfer

the first sentence is ok...the last is eugh

4

I'm sorry for that student

DJMcMayhem

@EriktheOutgolfer Would it be acceptable to require a space after each number of input?

Erik the Outgolfer

huh?

how would you write indices like 12481113???

DJMcMayhem

Is "1 2 4 8 11 13 " an acceptable input format? (note the trailing space)

Note, not not

And trailing not leading, jeez

Erik the Outgolfer

@DJMcMayhem umm, sure?

DJMcMayhem

19:17

Sweet

Erik the Outgolfer

is it for v or something?

DJMcMayhem

Yep. how'd you know? :P

AdmBorkBork

@JohnDvorak Right, I know about parallel lines and traversals cutting proportionally, I just can't figure out how to translate that into line segments on the first line. So, I'm partway there.

Nick Clifford

@EriktheOutgolfer when I was visiting his school, it turns out they also had MATLAB on their computers

Erik the Outgolfer

@DJMcMayhem iirc vim has g?

@NickClifford "had" and "use" are quite different things though

DJMcMayhem

19:18

In regex flags? Yes, but that's unrelated to the trailing space

Nick Clifford

I was just like "you have access to something great, and yet you chose visual basic of all things"

true

Erik the Outgolfer

@DJMcMayhem I meant the switch case

DJMcMayhem

Oh, yes it does. But I only want to apply it to specific indices

Erik the Outgolfer

good luck then :p

DJMcMayhem

And actually, ~ is equivalent to g?ll

@EriktheOutgolfer V, 9 bytes: Ó /|þ\nDJ@

Erik the Outgolfer

19:20

> DJ

nice

DJMcMayhem

I like it when my name appears in V solutions

lol

Erik the Outgolfer

umm, ninja

I guess v shows respect to its own father

DJMcMayhem

It's also just a really useful idiom

If the trailing space is not acceptable, that could be fixed by changing the first line to Ó¾ ¿/|þ

Erik the Outgolfer

but it is

DJMcMayhem

Or Ó¾ü$/|þ I guess

I know

Erik the Outgolfer

19:22

btw

jelly, 4 bytes: Œs⁹¦

and yes I need the ⁹ duh >_<

AdmBorkBork

@EriktheOutgolfer PowerShell, a crapton of bytes -- param($a,$b)-join([char[]]$a|%{if($i++-in$b){("$_".toUpper(),"$_".toLower())[$_‌-le90]}else{$_}}) -- Try it online! (zero-indexed)

Might be able to golf it using ASCII character codes rather than .toLower() / .toUpper(), but meh.

DJMcMayhem

> a crapton of bytes

You are correct

AdmBorkBork

Hey, it's under 100

so, got that going for me

dzaima

@LeakyNun APL, 21 bytes: {⍵({⍵[⍺]}⍣(¯1+⊃⍴⍵))⍺} should be golfable but idk how

AdmBorkBork

19:38

Wow, almost 24 hours without a new question (that stayed open)

Pavel

@dzaima If you have a block in a block, is there a way for the inner block to reference the outer block's ⍺ and ⍵?

dzaima

@Pavel I have no idea. I only recently started APL. Probably possible with assignment

Erik the Outgolfer

20:01

@AdmBorkBork what if what's making it longer is your salary mixed in there?

AdmBorkBork

CMC: Given positive integer x as input, output a list of numbers n where x^n contains no zeros in base 10. Example: x = 9 then output 0, 1, 2, 3, 4, 6, 7, 12, 13, 14, 17, 34 ... you can assume that no output number is greater than 100.

Giuseppe

@EriktheOutgolfer MATL, 8 bytes, ti)Yo2G(

AdmBorkBork

@EriktheOutgolfer Nah, that's on the low end of $-to-other-code ratio

DJMcMayhem

@AdmBorkBork Wait, how many numbers are we supposed to output? Just all of them under 100?

Erik the Outgolfer

@AdmBorkBork but that's normal amounts of salary...at least in greece :p

dzaima

20:03

@LeakyNun APL, 19 bytes {(↓⍵)(⌷⍣(¯1+⊃⍴⍺))⍺} - not sure why I need the parentheses around ¯1+⊃⍴⍺

AdmBorkBork

@DJMcMayhem Right. It's theorized that all of the sequences are finite, so just outputs under 100 are fine.

Erik the Outgolfer

> 1 Unable to open session file " /TryAPLServer/MiServer/ServerData/TAS000033.dcf"

yeah something might be wrong but I'm not sure if anything's wrong at all in there or everything is alright...

dzaima

@EriktheOutgolfer that's tryapls problem not mine, and idk how to make TIOs APL output. The program is used as 'hello world '{(↓⍵)(⌷⍣(¯1+⊃⍴⍺))⍺}10 8 7 12 5 9 11 6 1 2 3 4

Erik the Outgolfer

it probably is

I mean, I type 1 and it fails miserably

betseg

@AdmBorkBork can we assume x^n is under INT_MAX?

dzaima

20:07

@EriktheOutgolfer works fine for me

Pavel

There have been a ton of CMCs lately.

Okx

and no main posts

John Dvorak

CMC: post no more CMCs for a week

AdmBorkBork

@betseg That really limits the possible options, so I'm going to say no.

betseg

i wanted to answer in emojicode but rip :(

AdmBorkBork

20:09

I mean, 9^10 is already larger, and that's still well under ^100

DJMcMayhem

@AdmBorkBork Jelly, 12 bytes: Try it online!

It's a shame I can't use ³

Okx

@AdmBorkBork Neim, 7 bytes

dzaima

@AdmBorkBork SOGL, 10 bytes: M∫^r 0W‽FP - could be 8 if I implemented W on number;number - currently it just adds the numbers together as a leftover from copy+paste from +..

AdmBorkBork

I'm impressed that these aren't like two-byte built-ins

Poke

20:28

@Pavel Leaky and Adm became active again ;)

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A: Sandbox for Proposed Challenges

Infinite Array Anti-diagonals Given this infinite array 0 1 2 3 4 5 6 . . . 1 0 3 4 5 6 2 3 0 5 6 3 4 5 0 4 5 6 . 5 6 . 6 . . . . and an input integer n, output the nth anti-diagonal. Examples (zero-indexed): 5 -> [5, 5, 5, 5, 5, 5] 6 -> [6, 6, 6, 0, 6, 6, 6] 9 -> [9, 9, 9...

dzaima

@AdmBorkBork APL, 42 bytes: {(0=+/¨({((⌈10⍟⍵)/10)⊤⍵}¨⍵*⍳100)∊¨0)/⍳100} - 16 of those bytes are to split a number in its digits..

DJMcMayhem

One byte shorter: tio.run/##ARsA5P9qZWxsef//KkBEUArCs@G4tsOnw5BmxpP//zk

Neil

20:43

huh, no SOGL answer for codegolf.stackexchange.com/questions/143220/simple-complexity yet?

dzaima

@Neil I have no idea how that is generated

Neil

there are hints now, although my JavaScript answer was close without them

(the hints still allowed me to save 41 bytes)

dzaima

@Neil oh yeah, I didn't notice. I'll try to do something I guess

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A: Sandbox for Proposed Challenges

Two-Symbol n-state Universal Turing Machine A program is defined as a set of transition rules from one state to another based on the current state and symbol, optionally moving the tape head left or right. The goal is to produce a program that satisfies all of the following criteria: It is a ...

Pavel

21:28

@Poke that was months ago

Poke

@Pavel /me shrugs. They both like to post CMCs

Husnain Raza

New Oeis sequence is confusing :(

TuxCopter

Huh, for some reason PAYDAY 2 is listed as FAYDAY 2 in my steam library

caird coinheringaahing

@HusnainRaza Is that the New York Subway stops?

Husnain Raza

No the Boolean stuff

oeis.org/A000214 Wat dis

caird coinheringaahing

21:38

@HusnainRaza Unless the sequences have a mathematical formula, I don't bother to try to understand them

Husnain Raza

But how I code it

John Dvorak

You don't?

Husnain Raza

D:

caird coinheringaahing

Hahaha •.• is part of my Python program

mınxomaτ

22:11

Facebook abandons it's patent license: code.facebook.com/posts/300798627056246

Christopher 2EZ 4RTZ

22:32

Did TNB get a social life? Nobody here on friday night :P

flawr

I am no one.

mınxomaτ

If I'm not a bush, I'm not no one

Christopher 2EZ 4RTZ

So our social lives are still at where arrays start

@flawr Believe me I know

mınxomaτ

Intel thinks it's Q1 2018 already. I wish we were this far ahead of the dev plan.

Christopher 2EZ 4RTZ

Good counting, just like apple. 1, 2, 3, 4, 4s, 5, 6, 7, 8, X

Shaggy

23:03

@AdmBorkBork Japt, 11 bytes: Lõ k@pX søT

DJMcMayhem

23:17

@AdmBorkBork I wonder how one would prove whether that's finite or not. For 2, it's been checked up to 10^10, but I can't imagine any ways to prove it. (probably why it's still an open problem)

MD XF

@ATaco bitwise

cat program

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