The Nineteenth Byte

ATaco

07:05

I need a blog.

Destructible Lemon

try putting something on the medium

Destructible Lemon

07:22

I have written a description of how to play the game

can you guys help me make it better?

no?

New Main Posts

07:36

1

Q: Generating the perfect password

Story I need to remember a lot of passwords and don't want to use the same one for multiple websites so I came up with a rule, but the rule shouldn't be transparent so what I do is: Think of a long-ish easy word or concept like : celsius or breadpudding Change the first letter based on what th...

code-golf

1

Q: Fold a string into a triangle

Given a string whose length is divisible by 4, make a triangle as demonstrate below. If the string is abcdefghijkl, then the triangle would be: a b l c k defghij If the string is iamastringwithalengthdivisiblebyfour, then the triangle would be: i a r m u ...

code-golf string ascii-art

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Implement Nopfunge Background Nopfunge is a very simple Befunge derivative, with no stack and no real form of data storage; all it has is an instruction pointer and five commands ("turn north", "turn south", "turn east", "turn west", "continue in same direction"). However, what it does have is ...

Destructible Lemon

;_; I thought people had written messages but it was bots

ATaco

I'm here, but not writing much, being on my phone.

Destructible Lemon

ok can you review the text?

Qwerp-Derp

07:57

I need halp with HTML and CSS

w3schools.com/code/tryit.asp?filename=FGSVN7MO741N Why doesn't this work as expected?

flawr

08:07

It never does with HTML and CSS

@Qwerp-Derp what is it supposed to do?

The UK Brexit negotiation team https://t.co/kiQNfVnQG1

Tweeted by JohnCleese on June 20, 2017 at 11:39 AM

Qwerp-Derp

@flawr When I hover over the button, a div is supposed to appear.

flawr

I think this line does not work:

.dropbtn:hover + .dropdown-content, .dropdown-content:hover {
    display: block;
}

@Qwerp-Derp .dropbtn is in the same element as .dropdown-content so you cannot combine them with +

Qwerp-Derp

Argh, CSS is frustrating

How can I make this work, though?

flawr

Also I recommend using MDN instead of w3schools (<- there is a lot of bullshit)

@Qwerp-Derp place them in the same div?

put dropbtn and dropdown-content in drop-stuff

@Qwerp-Derp like so: w3schools.com/code/tryit.asp?filename=FGSWCQQQA5FV

Qwerp-Derp

Yeah, but I need to group the p and the button as one group

Do I have to use JS for this?

flawr

08:22

you can still make a div around the p and button

but you have to use the :hover on that div instead

but I'm by no means an expert in CSS, I'm sure there is a ton of wizardery

Qwerp-Derp

But I want the hover to only work on the button

Mayube

@Qwerp-Derp Try taking a look at this

Qwerp-Derp

@Mayube That's the website I got the thing from, I already read all of that...

Shaggy

@Qwerp-Derp Avoid W3Schools; they get a lot of things wrong.

Mayube

@Qwerp-Derp what about this one? Has a working example on it too

Kritixi Lithos

08:36

btw guys, I lost 75 rep yesterday because a user got removed

did anyone else lose rep as well?

flawr

yep, lost 20

It is just so infuriating that they don't tell you which user was removed...

betseg

-35 ;_;

You hit repcap - user upvotes you - user gets removed. Do you lose 10 rep?

Mayube

FYI it was HyperNeutrino who was removed

Leaky Nun

2 hours ago, by Leaky Nun

CMC: given a string of odd length, make a V shape. Example: abcde

2 hours ago, by Leaky Nun

a   e
 b d
  c

I suppose my CMC got ignored

Adám

08:52

@LeakyNun Trailing whitespace ok?

Leaky Nun

@Adám sure

Adám

@LeakyNun APL (Dyalog), 36 bytes: {(-(⌊l÷2)-|(⌈l÷2)-⍳l)⊖(⍉⍪⍵)↑⍨l,l←≢⍵}

Can probably be golfed, but it is a beginning.

betseg

@LeakyNun C, 115 bytes: i,j;f(char*s){j=strlen(s)-1;for(i=0;i<j/2;i++)printf("%*c%*c\n",i+1,s[i],j-i*2‌,s[j-i]);printf("%*c",j-i+1,s[j-i]);}

^^

Adám

@LeakyNun APL (Dyalog), 26 bytes: {⍉↑⍵↑¨⍨-h-|(h←⌈l÷2)-⍳l←≢⍵}

Leaky Nun

@Adám wow, 10 bytes golfed off

Adám

09:04

@LeakyNun Quite a different method.

@LeakyNun The first one build a matrix and rotated each column appropriately. The second pads each letter and then combines.

Leaky Nun

@EriktheOutgolfer hi

Erik the Outgolfer

hi

@ASCII-only Charcoal bug

Leaky Nun

@EriktheOutgolfer wanna do my CMC?

Erik the Outgolfer

just got in...yeah maybe

Adám

@LeakyNun APL (Dyalog), 17 bytes: ⍉∘↑⊢↑¨⍨(-⊢⌊⌽)∘⍳∘≢

Next version should be 9 bytes then ;-)

Leaky Nun

09:11

indeed

@Adám brief explanation?

Adám

@LeakyNun Sure. ⍳≢ are the indices, e.g. 1 2 3 4 5. (-⊢⌊⌽) is the negated min of the arg and its reverse, 1 2 3 2 1. ⊢↑¨⍨ take from each of the letters (taking too many pads with spaces). ⍉↑ combine list of strings in char matrix and transpose.

The ∘s are just to tie things together for the right order of evaluation.

Jim

@Adám What is the reverse?

Adám

@Jim ⌽1 2 3 4 5 gives 5 4 3 2 1. By "arg" is meant the argument of the parenthesised inner tacit function.

New Meta Posts

0

Q: Is the current time or date with modulo random enough?

Several questions have recently been asking about random. I see a lot of answers in those questions using the date not as a seed but as the random number that is then modulo'ed. Seen in Java: System.currentTimeMillis()%N System.nanoTime()%N Seen in JavaScript: new Date%N Doing so is random...

discussion

Jim

Oh got it

Leaky Nun

09:20

@Adám nice

Hankrecords

Good morning guys :)

Adám

@LeakyNun Thanks. If we are allowed extra (but even) horizontal spacing:

 H           o
    e     l
       l

APL (Dyalog), 15 bytes: ⍪¨↑¨⍨(-⊢⌊⌽)∘⍳∘≢

Hankrecords

I'm working on a KOTH challenge (link if you're interested: codegolf.meta.stackexchange.com/a/12742/69121) and I wanted to make it a JavaScript challenge since it's my favourite language and is also really easy, so I implemented the controller as a Node.JS program that runs submissions as modules

Is is a bad idea in your opinion?

I thought it could be ok since you can also use custom C++ modules in node

Leaky Nun

@Adám maybe you would want to do my challenge on main

betseg

Gangs of aggressive killer whales are shaking down Alaska fishing boats for their fish.

It begins.

Kritixi Lithos

09:28

I got 37 bytes for the pyramid challenge @Adám

Leaky Nun

@EriktheOutgolfer progress?

@KritixiLithos would you do my challenge on main?

Erik the Outgolfer

@LeakyNun feeling sleepy

just woke up btw

Kritixi Lithos

not yet

New Main Posts

-1

Q: Make a cake quine

Your job is to create a program which outputs the recipe of a cake with your program written on it. In particular, your program must output the following: Ingredients 1. 1 cup white sugar 2. 1/2 cups butter 3. 2 eggs 4. 1/24 cups vanilla extract 5. 3/2 cups flour 6. 7/19...

code-golf kolmogorov-complexity quine

Mr. Xcoder

I think most of you remember Martin vs Dennis - Round 1: Who has more rep?. There was a Round 2, but I deleted it kind of instantly because it was boring. And I really want to make "Round 2" again. Is anyone willing to help creating that?

Adám

09:31

@KritixiLithos which challenge is that?

Kritixi Lithos

21

Q: Output a Pyramid

Given a non-empty string s, with even length, and a positive integer n, representing its height, compose a pyramid using the following rules: The pyramid should contain n non-empty lines; trailing newlines are allowed. For each 1 <= i <= n, the i-th line should contain the string with each indiv...

code-golf ascii-art

Adám

@LeakyNun Sure. Going to post?

Kritixi Lithos

but my solution is so verbose I haven't posted it yet

Adám

@KritixiLithos I'm sure it can be golfed.

Kritixi Lithos

definitely: {↑((' '/⍨⌊∘((.5×≢⍵)×(⍺-⊢))),⍵/⍨⊢)¨⍳⍺}

Leaky Nun

09:33

@Adám posted already

like 2 hours ago

Destructible Lemon

yo

Adám

@KritixiLithos I've got 31: {↑(' '↑¨⍨4×¯1+⌽i),¨(i←⍳≢⍵)/¨⊂⍵}

ATaco

There are quite a few things I actually like about Javascript.

Adám

@LeakyNun The triangle one? That's a different challenge than the V.

Kritixi Lithos

@Adám the centres aren't really vertically aligned for the bottom testcase though: tio.run/##SyzI0U2pTMzJT///3/…

Leaky Nun

09:39

14 mins ago, by Leaky Nun

@Adám maybe you would want to do my challenge on main

"my challenge on main" was a whole phrase

Adám

@ATaco The best thing about JavaScript is that I can mostly avoid dealing with it.

4

@KritixiLithos OP: with even length

@LeakyNun Maybe, but I think KL is more than capable. I do have other work to do…

Kritixi Lithos

ಠ_ಠ that's why my solution was too verbose

Leaky Nun

@KritixiLithos so read the instructions more carefully lol

Destructible Lemon

I need help with rewriting my koth

Adám

Woohoo!

Destructible Lemon

09:46

would someone like to help me figure out how hackmd works and also help with my koth?

please?

Kritixi Lithos

@Adám ooh, version 17

Adám

@KritixiLithos Yeah, I'm the second person in the world to install it (after JohnD, who built the install package).

Okx

Can we get this invalid answer deleted please? codegolf.stackexchange.com/questions/96950/…

Jim

@LeakyNun Pyth, 30 bytes: Kh/lz2jC.esm?q?<kKkt-lzkdb\ Kz

Not really happy with it though

Shaggy

@Okx I'll delete it myself, thanks, once someone properly explains to me exactly why it's invalid.

Mayube

09:59

it's already been deleted

Shaggy

So people have now taken to arbitrarily deleting answers without explanation? What's happening to this place, at all?!

ais523

I strongly advise you to run the output you get from your program through a hashing function; the question lists the desired hash of the output, together with a base64 of the desired output

either would work in a way more effective than visual inspection to see whether it's correct

@WheatWizard: in case you missed it: you reviewed actual, red-flagged spam as "Looks OK"; please be more careful with your low quality posts reviews

I know it's important to clear the queue of legitimate posts, but that's no excuse not to read them

Shaggy

@ais523 I copied the exact string from the question to use to work on my answer and searched for the string it output on the question's page to ensure it was an exact match.

ais523

(also, even if you miss the fact that the post is red-flag spam, it's clearly NAA)

New Main Posts

0

Q: Stewie's Game of Death

Stewie's Game of Death is quite similar to the more famous Conway's Game of Life. The universe of the Stewie's Game of Death is an infinite two-dimensional orthogonal grid of square cells, each of which is in one of two possible states, alive or dead. Every cell interacts with its eight neighb...

code-golf grid game matrix cellular-automata

Shaggy

10:08

Searching through the answers, every one of them contains the exact string included in the question so what makes them valid but mine invalid?

ais523

@Shaggy: your string base64s to `15DXkdeS15PXlNeV15bXl9eY15nXmteb15zXndee15/XoNeh16LXo9ek16XXpten16jXqdeq`, the base64 of the intended output is
`15DXkdeS15PXlNeV15bXl9eY15nXm9ea15zXnted16DXn9eh16LXpNej16bXpden16jXqdeq`

let me reformat that so it's a bit clearer:

15DXkdeS15PXlNeV15bXl9eY15nXmteb15zXndee15/XoNeh16LXo9ek16XXpten16jXqdeq
15DXkdeS15PXlNeV15bXl9eY15nXm9ea15zXnted16DXn9eh16LXpNej16bXpden16jXqdeq

see the difference near the middle?

you could have done that step yourself, rather than complaining

Mayube

@Shaggy note in the comments that somebody pointed out that the codepoints of the desired output are not perfectly in order, wheras the latin alphabet, which you used, is

Shaggy

@ais523 I'm not complaining, I simply don't understand. I used the exact string to build my answer, ensured that the output was that exact string yet, somehow, it still isn't that exact string.

Mayube

it's because of the RTL nature of hebrew, copy-pasting doesn't always work perfectly

Leaky Nun

@Jim I'll see it later

Shaggy

10:14

@Mayube Therefore the problem is with the question asking us to output that exact string, no? When what they mean is output a slightly different string.

Mayube

in fact that's exactly why there is a base64 and SHA hash offered

Destructible Lemon

^

Shaggy

@Mayube If there's a need for them, then the word "exact" should have been omitted from the question completely.

And, I still don't comprehend how the 2 strings are simultaneously the same, but different! Can someone please explain?

Mayube

They're not the same

Okx

@ASCII-only you cannot join the asciionly club because your charcoal language uses Unicode :(

Mayube

10:24

@Okx iirc charcoal actually assumes any ASCII characters are literals, such treason :C

Destructible Lemon

also I would still like help with my koth question

ASCII-only

@Mayube :(

Okx

ASCII-only is corrupt

ASCII-only

@EriktheOutgolfer Should be fixed, just need to wait for Dennis to pull.

Erik the Outgolfer

I wanted to make ast of Ｐ basically, and it was impossible

ASCII-only

10:26

@EriktheOutgolfer :| sorry

Erik the Outgolfer

it prints Program\n and then crashes...

Shaggy

@Mayube Then how is it when I search the page for the string I was outputting, it matches but when I search the page for the string Okx provided, which was different, it also matches?

Adám

CMC: Convert A String To Title Case. Catch: All-uppercase words stay all-uppercase and Words that begin with ligatures where there is a dedicated title case character must use those. E.g. U ǆunglu, MOĆNOJ ǆungli → U ǅunglu, MOĆNOJ ǅungli

New Main Posts

0

Q: Print the Russian Cyrillic alphabet

Apparently, we really like printing the alphabet in different languages. How about the Russian Cyrillic alphabet? Print/output/return this exact text (trailing whitespace is permitted) АаБбВвГгДдЕеЁёЖжЗзИиЙйКкЛлМмНнОоПпРрСсТтУуФфХхЦцЧчШшЩщЪъЫыЬьЭэЮюЯя This is the Russian Cyrillic alphabet wi...

code-golf string kolmogorov-complexity

0

Q: Compressing RLE data to draw ASCII art

This question is based on what I came up with to answer another question. Sometimes the questions here ask to draw some ASCII art. One simple way to store the data for the art is RLE (run-length encoding). So: qqqwwwwweeerrrrrtttyyyy becomes: 3q5w3e5r3t4y Now to draw a big ASCII art yo...

code-golf compression

Destructible Lemon

10:44

the new eavesdropper comic is out!

ASCII-only

10:55

@EriktheOutgolfer *Errors

@EriktheOutgolfer Yeah ik I already fixed it on github

Erik the Outgolfer

@ASCII-only as long as it doesn't do the job it's the same

@ASCII-only yeah ikr

but TIO still does that...not your fault

Okx

@Adám 05AB1E, 12 bytes: #vyD.li™})ðý

Adám

@Okx Wow. I didn't expect something that short - or any golfing lang. How does it work?

Okx

Loops through each word, checks if it is all lowercase. If so, title case it

betseg

11:10

yup, its confirmed. we've found the most secure password, guys. mostsecure.pw

feersum

A secure password is just another name for an uninteresting number.

Destructible Lemon

@betseg wtf

betseg

you can use that password for all your accounts

Destructible Lemon

I feel like there is a large portion of people who won't understand this is satire

betseg

yeah

feersum

11:13

So since that password is a bit long to type, I would like to know the shortest secure password.

Okx

Here is a more secure password generator: žzÝ20.D)€.RçJ

(not joking :P)

betseg

Bash + coreutils, 32 bytes: dd if=/dev/urandom bs=20 count=1

Mayube

@feersum define secure

Okx

CMC: Generate 20 random characters in the ASCII range 0-255

betseg

define random

feersum

11:17

@Okx That's not an ASCII range.

betseg

we cant generate 20 random things

Doorknob

@betseg head -c20</dev/random

ASCII-only

@Okx What if only the second letter is uppercase

Mayube

@Okx ascii range stops at 126

Okx

extended ascii included...

passwords you can type on a standard keyboard are too insecure

feersum

11:18

"Extended ascii" is not one thing.

betseg

@Doorknob /dev/random can close the pipe before even 1 byte is outputted

Okx

Well, a list with 20 random numbers each in the range 0-255 :/

New Meta Posts

0

Q: Is this another puzzle? 404 image in 404 page

I just reached a question that was deleted here on this meta, probably for being really awful for the users of this site. (click at your own risk.) All good, questions get deleted all the time, but I couldn't help noticing something weird: Actually this is funny. Image not found inside Pa...

bug

Okx

how dare dennis delete our memes D:

4

Doorknob

@betseg It might take longer, but it'll still work. (A tradeoff worth making for a byte saved. :P)

betseg

11:21

i love modern music... aplay</dev/urandom

can everyone star user165474's message :p? thats hyperneutrino

Kritixi Lithos

why did they delete his account?

Mayube

@KritixiLithos no idea, he's made a new one since

Adám

@KritixiLithos Because he joined SE while he was too young.

Kritixi Lithos

the other account is not a new one, it was his sock's account

Mayube

Oh, age restrictions

Adám

11:32

Jun 10 at 3:32, by user165474

I turned 13 1 year 11 months ago.

Erik the Outgolfer

the other account was chatbot

Mr. Xcoder

How old must you be in order to have an account here (theoretically)?

Erik the Outgolfer

13 at the time you join

Mr. Xcoder

Ooh, what a release.

Fun fact: The comment I deleted earlier was saying: "Is [this](link...) the same HyperNeutrino? If so, what happened?"

betseg

i hope Riker's account wont get removed :P

Kritixi Lithos

11:44

why did you have to say that ;_;

Mr. Xcoder

@betseg Keep "your mouth shut" :P

Kritixi Lithos

but Riker's a mod, so I don't know how that works out

Lembik

hi @LeakyNun

betseg

o shit i opened my account when i was 13

Mr. Xcoder

It's okay then

Okx

11:46

that should be fine though

betseg

oh its before 13?

Mr. Xcoder

You should not be younger than 13

Yes, if you are 12

Your account gets deleted

Leaky Nun

@Lembik hi

Mr. Xcoder

@Lembik What's going on with "hi @LeakyNun"? Have I missed anything?

Lembik

@LeakyNun I hope you don't mind.. I went edit mad on your math.se question

it wasnt' getting much love

@Mr.Xcoder You mean what's up with people talking to each other? :)

Mr. Xcoder

11:49

No, it's like a habbit although you are not both present in the room at the same time... Really, don't take it seriously

:)

I like people talking to each other

Lembik

@Mr.Xcoder :) It's just a way to start a conversation

I never know who is really here

Mr. Xcoder

@Lembik Fine :)))

Lembik

@LeakyNun Someone approved the edits.. if it was you, thank you

Leaky Nun

@Lembik no i didn't

Lembik

I left in "Link to original question, and link to approval of original author." even though I don't like it :)

Leaky Nun

11:51

but well I approve the edits.

Lembik

@LeakyNun in that case whoever approved it did it before understanding the changes I suspect :)

cool

Adám

No one answered this CMC: Given a string of odd length, e.g. "World", return:

  Wor
 Worl
World
orld
rld

Leaky Nun

I did answer it

Mr. Xcoder

@Lembik Noticed be both have around 350 rep on Math.Se, you have 2.4 k on SO, I have 2.3 k and you got 2.3 k on PPCG and I have 2k... We're close on nearly all the sites we are both active on. You have a slight advantage, thougj

Adám

@LeakyNun Really? My bad.

Leaky Nun

11:54

22 hours ago, by Leaky Nun

@Adám Jelly, 23 bytes: L’H⁶xWẋ2jẋ"JŒB$ṙL’$ŒḌṚY

Lembik

@Mr.Xcoder except I have given away thousands of rep on PPCG

Leaky Nun

22 hours ago, by Erik the Outgolfer

Jelly, 33 bytes: ,Ṛ;\€L>¥Ðf€LH$Ṛ€2¦UzZ¥€⁶U1¦Ḋ€2¦ẎY

but these should be the only two answers to your CMC

Adám

I'm so sorry.

Mr. Xcoder

@Lembik Yeah, I know.

Lembik

and also I am terrible at coding :)

and math

so it's all fake news!

Kritixi Lithos

11:55

@Adám so what is the size of the string?

oh, it's 5 by 5

Adám

@KritixiLithos Yes, with the original string in the middle vertically and horizontally.

HyperNeutrino

lol I came back this morning and saw "+375" on my profile and I was like "yay!" until I realized that 100 of that was the assoc bonus to another site after I gained enough rep and another 100 was the assoc bonus given to me on PPCG lol

Mr. Xcoder

@HyperNeutrino I am very sorry that your account was deleted... It is quite unfair :(

HyperNeutrino

@Mr.Xcoder thanks for your condolences. I'm still waiting to hear back from SE. Out of curiosity, how much rep did you lose from user-removed?

Mr. Xcoder

@HyperNeutrino A lot. Looking right now and I'll come back

Doorknob

12:07

Found this incredibly amusing: "Internal Apple presentation on how to handle leaks gets leaked"

Mr. Xcoder

@HyperNeutrino I lost 40 rep

Leaky Nun

@Doorknob can I say that the article is... leaky?

3

HyperNeutrino

@Mr.Xcoder ah. that sucks :I

Mr. Xcoder

@HyperNeutrino It's kind of important for my current rep, I could of been 2k right now

HyperNeutrino

@LeakyNun ಠ_ಠ why lol

Leaky Nun

12:08

> In one of the more outlandish schemes, Rice says, “We had 8,000 enclosures stolen a long time ago by women putting it in the underwire of their bra.”

HyperNeutrino

@Mr.Xcoder oh yeah, rip.

Doorknob

@LeakyNun I was trying to think of a worse pun, but I think there are nun.

7

Mr. Xcoder

@HyperNeutrino Wait... I made a mistake

Erik the Outgolfer

> We had 8,000 enclosures stolen a long time ago by women putting it in the underwire of their bra.

Mr. Xcoder

Was your account deleted yesterday?

Erik the Outgolfer

12:10

oh yeah Leaky Nun is a good ninja...

HyperNeutrino

yes

Erik the Outgolfer

...who brought her pals there too :P

Mr. Xcoder

Then, I've only lost 30 rep

HyperNeutrino

ah ok

Mr. Xcoder

That was another user I was looking at

HyperNeutrino

12:10

Ah. Wait two user removals?

Mr. Xcoder

The day your account was deleted, my overall rep was + 45

HyperNeutrino

Ah.

Mr. Xcoder

@HyperNeutrino Yes, two user removals

HyperNeutrino

wow

Erik the Outgolfer

the other being voting abuse iirc

Mr. Xcoder

12:12

Whose account was deleted on May 25th?

Erik the Outgolfer

@Doorknob also...yeah pretty much App£€ €xpo$€d

Leaky Nun

@Adám Pyth, 15 bytes: jm<>.[ylQQ;dlQU

Mr. Xcoder

@HyperNeutrino Actually 3 user removals, though I only lost 10 because of the last one

Leaky Nun

...and that is how Pyth outgolfed Jelly by 8 bytes

HyperNeutrino

@Mr.Xcoder oh wow D:

Adám

12:13

@LeakyNun Very nice.

Erik the Outgolfer

@LeakyNun one thing for sure, both suck at string manipulation

Adám

@KritixiLithos Don't be discouraged from trying for an APL solution, but just fyi 16.0 (out this week, God willing!) has it built-in: {⊢⌺(≢⍵)⊢⍵}

Erik the Outgolfer

most useless builtin APL's ever had?

Mr. Xcoder

@HyperNeutrino Calcultating my final rep, I would have had 2030 or so (from all three removals)...

HyperNeutrino

ah :(

Adám

12:17

@EriktheOutgolfer No, it is the Game of Life operator!

Erik the Outgolfer

"Stencil"?

HyperNeutrino

Darnit, this is the second time I've been ninja'd in comments :(

LeakyNun is too fast :I

Erik the Outgolfer

yes he is

that's why he sometimes times his submissions too

Adám

@EriktheOutgolfer Yes, for "stencil code":

Stencil code

Stencil codes are a class of iterative kernels which update array elements according to some fixed pattern, called a stencil. They are most commonly found in the codes of computer simulations, e.g. for computational fluid dynamics in the context of scientific and engineering applications. Other notable examples include solving partial differential equations, the Jacobi kernel, the Gauss–Seidel method, image processing and cellular automata. The regular structure of the arrays sets stencil codes apart from other modeling methods such as the Finite element method. Most finite difference codes which...

HyperNeutrino

@LeakyNun Since you seem to understand this, can you explain it to me? I have no idea what on earth it is

New Main Posts

12:20

4

Q: Impossible cube maybe

Problem Given an input a where a is a truthy/falsy value output the exact impossible cube below if truthy and the exact normal cube below if falsey. Input truthy: ___________________________________ / _______________________________ /| / / _____________________________...

code-golf ascii-art kolmogorov-complexity

0

Q: Digital numbers operations

Input will be digital number in format 3x5 of 0/1, 111000111 001010001 111111001 100010001 111000001 = "2+7" You should recognize operation as +, -, x, /, represend by 000000000000000 010000101001111 111111010010000 010000101100111 000000000000000 = "+-x/=" ...

code-golf

HyperNeutrino

OH IT'S THAT

oh...

I was just about to close-vote...

But I realized that I can't ಠ_ಠ

Mr. Xcoder

@HyperNeutrino You seemed to have understood... Can you explain it to me as well, please? I still don't get it.

Leaky Nun

@Mr.Xcoder visual pattern.

The 1s form "2+7" visually, LCD-esque

HyperNeutrino

Again?

Mr. Xcoder

What? I still don't understand

oooh

I am so dumb

Sorry...

Leaky Nun

12:23

It isn't your fault at all

HyperNeutrino

111     111
  1  1    1
111 111   1
1    1    1
111       1

Mr. Xcoder

But the pattern is awful

Leaky Nun

indeed

Mr. Xcoder

Better VTC

I would, but didn't see code-golf and voted, and retracted for "off-topic"

Until the last close vote was casted, It was like that question with the Code-Macro-Challenge, which has 4 reopen votes for more than 3 days :))

Adám

From the Dyalog '17 workshop schedule:

TP3: Code Golf Hackathon
Roger Hui, Marshall Lochbaum, Jay Foad and Adám Brudzewsky
Join us for a light-hearted but deadly serious Code Golf Hackathon with problems designed to help you learn to take advantage of recent language features.

Mr. Xcoder

12:31

Anyone here willing to teach me how to play Spyfall?

Leaky Nun

@Adám would you post your string CMC on main?

Adám

@LeakyNun Which the square one?

Leaky Nun

@Adám yes

Adám

@LeakyNun I'll sandbox it if you're willing to help write a description of the problem.

Leaky Nun

@Adám ok, go ahead and link me

Mr. Xcoder

12:34

@Adám I should start solving it :))

I finally gave up creating that programming language... I ran a couple of challenges with it, and once it was outgolfed by Java ಠ_ಠ

Adám

0

A: Sandbox for Proposed Challenges

Super acrostic Given a string of odd length, e.g. World, return: Wor Worl World orld rld stringcode-golf

Leaky Nun

@Adám ok

Mr. Xcoder

@Adám Can I help as well?

I like this challenge.

Adám

@Mr.Xcoder Sure, I'll add a note about editing.

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Super acrostic Given a string of odd length, e.g. World, return: Wor Worl World orld rld stringcode-golf

Leaky Nun

12:38

@Mr.Xcoder okay I'll let you edit first

Mr. Xcoder

@LeakyNun No, I like making polishings at the end/

Go ahead @LeakyNun

Leaky Nun

@Mr.Xcoder ok, then I'll tell you after I finished editing

Mr. Xcoder

Fine :)

Leaky Nun

and I'll try to make it irreprehensible :p

Mr. Xcoder

@LeakyNun That's wicked.

Adám

12:39

Maybe I should post one of my pipelined challenges?

Mr. Xcoder

@Adám Can you reply with one here? I don't remember them

Kritixi Lithos

@Adám maybe add another example

Adám

@KritixiLithos On which one?

HyperNeutrino

@Adám Hm? I saw my ID

Oh were you doing user:me?

Mr. Xcoder

@Adám Broken link

Kritixi Lithos

12:41

oh wait, before that, you should specify how long the input string will be

HyperNeutrino

@Mr.Xcoder codegolf.meta.stackexchange.com/…

Mr. Xcoder

@LeakyNun You ping me after you are done, but I'll most likely be offline. I'll come back later.

Leaky Nun

@Mr.Xcoder done, and I haven't added the description because I also don't know how to describe it

HyperNeutrino

> Pneumonoultramicroscopicsilicovolcanoconiosis

ಠ_ಠ

Leaky Nun

@EriktheOutgolfer how silly; I have a 11-byte solution now in Jelly

wait no it's borked

Erik the Outgolfer

12:51

huh?

Leaky Nun

it's 14 bytes now

Erik the Outgolfer

solution to what?

Leaky Nun

57 mins ago, by Leaky Nun

22 hours ago, by Leaky Nun

@Adám Jelly, 23 bytes: L’H⁶xWẋ2jẋ"JŒB$ṙL’$ŒḌṚY

57 mins ago, by Leaky Nun

22 hours ago, by Erik the Outgolfer

Jelly, 33 bytes: ,Ṛ;\€L>¥Ðf€LH$Ṛ€2¦UzZ¥€⁶U1¦Ḋ€2¦ẎY

@EriktheOutgolfer to the sandboxed challenge

Erik the Outgolfer

wait it has been sandboxed?

HyperNeutrino

I wonder; what's the longest non-self-recursive chain of permalinks?

wow it's like just past UTC noon and I'm almost at my repcap

Leaky Nun

12:52

14 mins ago, by New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Super acrostic Given a string of odd length, e.g. World, return: Wor Worl World orld rld stringcode-golf

@EriktheOutgolfer oh and it's 11 bytes now

Erik the Outgolfer

but it's borked again right?

Leaky Nun

no it isn't

I golfed 3 bytes off

Erik the Outgolfer

oh...

Kritixi Lithos

@Adám it's a start: {↑((B×(×.5+⊢))↑⍵↓⍨⊢)¨(⌈B÷2)-⍨⍳B←≢⍵}

Leaky Nun

@EriktheOutgolfer do you have any idea how to describe the challenge?

Erik the Outgolfer

12:55

nah

Leaky Nun

10

Q: Fold a string into a triangle

Given a string whose length is divisible by 4, make a triangle as demonstrate below. If the string is abcdefghijkl, then the triangle would be: a b l c k defghij If the string is iamastringwithalengthdivisiblebyfour, then the triangle would be: i a r m u ...

code-golf string ascii-art

@Adám I think your question is good to go

I also didn't describe my challenge.

HyperNeutrino

@LeakyNun Why 4?

Leaky Nun

@HyperNeutrino the bottom side has twice as many characters as the other sides

HyperNeutrino

... oh wait whoops lol

riiiiiiiight

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Generate a Locationalized US License Plate code-golf decision-problem Given one of the following: AK,AS,AZ,CA,CT,DC,FL,GA,IL,IN,IA,KS,KY,LA,MD,MI,MN,MS,NV,NH,NJ,NM,NY,NC,ND,MP,OH,OK,PA,PR,RI,SC,TN,TX,UT,VT,VA,WA,WI (with quotes) "AK","AS","AZ","CA","CT","DC","FL","GA","IL","IN","IA","KS","K...

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