The Nineteenth Byte

ah OK that makes more sense

@Geobits Yeah, I don't really mind that the sites are different, was just speaking my mind. IMO PPCG's much better for learning how to golf, but anarchy's better for actually pushing the limits of what's possible

Anonymous

Anagolf is better for competitive people, PPCG is better for cooperative people

I still don't really understand how Anarchy as a whole is just so damn good at golfing

Are you sure it's not just mitch/xsot/you? :P

4:02 AM

i could list a lot of users

for Python, offhand: hallvabo, llhuii, teebee, leonid

also twobit

ah yes

(headdesk saved 3 bytes because I was doing something stupid - still only 67 though hmm)

some of the tips for python that I posted I first saw from their answers

Alex A.

I'd love to see us be the go-to place for code golf but it seems like that won't be the case if Anarchy is where the real competition is.

4:04 AM

@Maltysen works (and I think I understand why)

Now just gotta generate the list hrmm

tybalt89 hasn't submitted for a long time, he was golfing way back in perl golf days, with ton hospel and them

Maltysen

@AquaTart I was gonna do this, but I already did the other one,so… the shortest way is probably to generate 0..999 and then when computing differences and sorting by them, convert from minute:second to pure seconds

and there are a lot of old submissions from flagitious, the inventor of golfscript, also mark byers

Alex A.

That guy should join the language building community here.

Anonymous

I'm down to 71 bytes now...

trichoplax

4:10 AM

@Doorknob For me the 5th result is newest code golf questions on SO

Doorknob

heh

@Maltysen Oh, we dont have to support n>999?

thats easier then

in terms of anarchy golf community, there is some discussion on japanese twitter accounts that i know of, although i don't know japanese and i haven't had much luck with machine translation from japanese to english, google translate tends to mangle a lot of things

Anonymous

Doorknob

try incognito

different results, personalized searches

(same top two for me though)

errr... item #2 is not "tips for golfing in Python" it's just a general PPCG page

4:15 AM

I was thinking map 1..Q+1/10 d*int("1"*len(Q))

Anonymous

It's not terribly surprising that SE does better SEO than anagolf :P

rats I thought of better approach but we cant nest maps

flatten(map(lambda x : map(lambda y : str(y) * x, 1..9), 1 .. len(Q)+1)) in really bad Python psuedo code

@Maltysen is there a way to nest maps like this?

oh crap nevermind I had no idea input was in minutes:seconds

Darn I had no idea that this entire time I was really solving the other already solved challenge :p

...anyways

4:34 AM

@AquaTart Lazy microwave time?

Yeah that was what I thought I was working on.

But I misread the spec and ended up unintentionally working on a solution for the other challenge

Anonymous

I'm still stuck at 71 on the anagolf one :/

Dennis

I'm at 68.

Still pretty stuck too hmm - so many possibilities, but too much to brute force

Dennis

And have been there for an hour... :/

Anonymous

4:47 AM

I'm not sure what I'm missing :/

Alex A.

I'm not sure how to internet :/

Anonymous

I'm going through all the tips on the Python tips post but haven't found anything yet

Anonymous

On the plus side:

Anonymous

I made it onto page 2 \o/

4:50 AM

There's only one which really helps I think, the rest will need actual ingenuity/expression generating skills

Geobits

@Mego Congrats! Better build you a buffer now ;)

Anonymous

Yeah as soon as I either hit 64 or give up on this problem, I'll start farming more

Anonymous

@Sp3000 I think I found the one trick that helps, and I'm already using it

Anonymous

Another one might also help but I'm not sure it can be applied here

fwiw, i didn't consider brute forcing to be a part of it at all

4:59 AM

Oh? Hmm... having trouble knocking 2 off this expression though

Anonymous

I'm sure I'm missing something super obvious in this expression

@MitchSchwartz In hindsight, I think my solution can be brute forced

i don't know how to get your stats :)

same..

what's with all the id(0)s at anarchy?

5:02 AM

Random :/

so just resubmit until it passes?

Yeah

It only works on problems without the rejudge feature enabled

Oh, recently added. Nice :)

basically i started with a 66 that could considered as (standard way of defining suffix rules) + (standard python tricks and re-arranging), then two independent one-byte improvements that are math-related

Anonymous

5:08 AM

Yess breakthrough

Anonymous

Made it to 69 now

Wow I can't believe this problem is still the topic

well we were discussing carrots earlier

oh how did you come up with the 7*g**6 ?

was really surprised to see that

Well since there was only a small range that it had to work for, I thought maybe there could be some expression which has the right value by luck

The right length I mean

So I tried some expressions for a few minutes

that's cool, there wasn't a whole lot of time between when you submitted 61 and then 59

5:15 AM

yeah

There aren't that many possibilites in 6 bytes I guess

What's this for?

@Sp3000 golf.shinh.org/p.rb?An+afaik+unnamed+involution

Ah, nice :P

@MitchSchwartz I didn't know about n^-n. Is it an already well-known expression?

not that i know of, but there's n^(n-1)

5:22 AM

Chat mini challenge - find the next number in the sequence: 1, 5, 27, 194, 1865, 22875, ?

i experimented because i was at 61 and then saw feersum's 59

@Eridan 42. -(37579 x^6)/240+(594173 x^5)/240-(697355 x^4)/48+(1890703 x^3)/48-(5849303 x^2)/120+(647029 x)/30+1 for x = 0..6

@Eridan 342391

Hint, it's greater than 25000

@El'endiaStarman I haven't actually calculated the next term because WolframAlpha is slow and my calculator is out of reach, what's the general formula?

42 is greater than 25000, learn something every day

5:26 AM

@Eridan Well, it's the only search result on OEIS. :P

Well damn

OEIS strikes again

You should know by now, always look up a number sequence in the OEIS first. :P

Anonymous

It's kinda sad how so many of my linux issues get resolved because I finally break down, download the source, and compile/install it myself rather than trying to use a package manager

Anonymous

Also I may have bricked my Xubuntu install

Anonymous

When gcc stops working, you know you've messed up bad

5:30 AM

Complete these sequences:
1, ?, 3, 4, 5, 6, 7
3, ?, 3, 3, 3, 3, 3
1, ?, 1, 0, 1, 0, 1

Hint - It's not {2, 3, 0}

@MitchSchwartz @xnor 63 :)

D:

:D congrats!

...well, dang.

Nice work :)

5:31 AM

I think I know what your 64 looks like now

Congrats! :D

xnor with the accurate instincts

So, xsot. How likely is 62? :P

Anonymous

Enjoy the 500 rep bounty lol

Dennis

Do anagol submissions become visible once the competition is over?

5:32 AM

yup

@Eridan -1 too broad :/

<eyes>

@Eridan ಠ_ಠ?

Yes

I'm too tired to switch tabs

And find the eyes

disapprovalface.com

5:33 AM

ಠ_ಠ

@Dennis except for the ones marked "endless". Those will remain secret forever

It's 2, 2, 9 because the top row is the month and the second and third rows are the number of days in the month

Anonymous

Or just @<tab><tab><home><del>

@Mego That's only possible now because @ಠ_ಠ came in here recently.

@Sp3000 unlikely. But 71 for python3 is almost certainly possible

5:37 AM

Oh? That's interesting

Anonymous

@El'endiaStarman Yep thank Alex for that

Oh, somebody's here.

where?

A: Sandbox for Proposed Challenges

there!

Anonymous

Obligatory "does anybody have comments on my sandboxed post" message

Anonymous

5:40 AM

0

The Holier Numbers As we learned from The Holy Numbers, there are 5 holy digits (0, 4, 6, 8, 9), and positive integers consisting solely of those digits are holy. Additionally, the holiness of a number is the sum of the holes in the number (+2 for every 0 or 8, and +1 otherwise). Now, there is ...

/me needs a quick emoticon input method

@Mego Try working a "reversed holarity" pun in there somewhere. :P

Not seeing what the challenge adds to the holy numbers, but shrugs

Anonymous

@Sp3000 Different sorting, different sequence, one less parameter

A: Sandbox for Proposed Challenges

@El'endiaStarman you mean add 'Digits to the right of the decimal point have reversed holarity.'?

Anonymous

5:44 AM

I had another idea for a follow-up challenge that I could do instead

New Sandboxed Posts

-1

Battle of the Sieves In this challenge, we will be seeing how much we can optimize the Sieve of Atkin (SOA). To do this, we will be checking our SOA time against an implementation of the ancient Sieve of Eratosthenes (SOE). The task You must write TWO programs/functions in the SAME language....

RIP the instant, commentless downvote.

Anonymous

@Liam That was me. I downvoted it because I didn't think it was interesting. No comment needed.

That's the comment I would have liked to see. "Doesn't look interesting"

algorithm-bowling: write the slowest Sieve of Eratosthenes.

Anonymous

5:53 AM

@Liam That's what a sandbox downvote means

@Mego was unaware of that, sorry

@Mego Er...

Anonymous

Unless it's accompanied by a comment like "this has these problems..." or the like, a sandbox downvote typically means "this doesn't look interesting"

For me, it's more of a simple "I don't think this works as a challenge on the main site". Each to their own, I guess

^ not to each his own, that's what comments are for?

5:58 AM

If I downvote and you get no comment, you're probably doing something seriously wrong :P

Haha see that's what I think when I see any downvote without a comment.

"Something so wrong it doesn't even merit a comment"

I'll probably comment with a downvote on a proposed challenge, unless it's so awful I don't know where to begin.

sunlight reflecting off a weather balloon causing an involuntarily index finger muscle contraction

@feersum in regards to your earlier comment, you don't think it'd be viable to standardize an algorithm across languages for the sieve of eratosthenes?

No, not at all.

6:05 AM

what exactly do you see the problem as?

I have a kind of narrow viewpoint because I don't really use the golfing languages.

I don't care about golfing languages either.

Because I think I could write almost the same implementation in C/C++ and python?

There are many possible choices which would change the constanct factors (which are the important part)

I don't think I know what you mean by "constant factors"

Anonymous

Say you have two algorithms that are O(n)

Anonymous

6:10 AM

In reality, their performance is A*n + B, but those constants stop mattering for high n, so we just say O(n) for asymptotic performance

But we're not comparing things across langauges

Anonymous

But when you're comparing two algorithms, them both being O(n) doesn't mean they'll be the same speed - their respective constants A and B will matter

Anonymous

So if algo a was 5*n + 400 and algo b was 10*n + 2, though they are both O(n), they will have different timing profiles for various inputs

I admit to not knowing all that much about algorithm complexity, but we're talking about implementing the same algorithm in different languages.

Intentionally "slowing" your implementation would be cheating (hard to detect perhaps but still)

Anonymous

There may be a legitimate choice in the implementation that would slow it

6:16 AM

And I would think that there would be much more optimization to be done on the sieve of atkin

Anonymous

Relying on a reference implementation for each language just doesn't work

btw I also dislike challenges that tell you to use a specific algorithm.

Rather than saying this is what you need to compute; do it however is fastest.

the trouble there is having to run everything on the same machine

That's far easier than having a reference implementation in every possible language.

but then the SOE in C will likely beat an optimized SOA in other languages

and now its "choose the fastest language"

6:20 AM

This is no different than code golf.

exactly

I wanted to compare optimization of implementation

@Liam some other languages

6:49 AM

@somebody ?

31 mins ago, by Liam

but then the SOE in C will likely beat an optimized SOA in other languages

in some cases JIT beats C/C++

What I mean is that, generally speaking, interpreted languages really don't stand a chance against a compiled system programming language in terms of execution time.

@xsot congrats!

what PPCG answer do you want the bounty on?

it has the extra side-benefit of exposure for an answer of yours

Anonymous

He could post it on our ordinal challenge after the reveal

Anonymous

And you could put the bounty on that

Q: Outputting ordinal numbers (1st, 2nd, 3rd)

7:00 AM

do we have this challenge?

Anonymous

14

I would like to generate (as a return result of a function, or simply as the output of a program) the ordinal suffix of a positive integer concatenated to the number. Samples: 1st 2nd 3rd 4th ... 11th 12th 13th ... 20th 21st 22nd 23rd 24th And so on, with the suffix repeat...

oh, of course, i did see that

Anonymous

That way the bounty is actually relevant :P

that sounds a lot better

Anonymous

The current Python answer is how I got to 69, but I'm stuck there for now :/

7:01 AM

good idea, I'll make a submission here once the contest is over

@xsot Can I ask, did you use any computer search to optimize expressions?

Anonymous

Still got time to beat 63 :P

Anonymous

I'll keep working on it to see if I can manage to figure out how the 63 works :P

@xnor No, but I got quite lucky

Anonymous

I'm guessing magic number nonsense

7:03 AM

@xsot as in, "it works for test cases" lucky?

no, but if there was a special suffix for 4 it wouldn't work

Hi everyone !

Anonymous

I'd probably do better if I had the precedence table memorized :P

@Mego There's a magic number but it's not unique

Anonymous

I know I can improve mine with a magic number trick, but I'm having difficulty coming up with said number

Anonymous

7:07 AM

Being sleepy doesn't help

@Mego drink more coffee :)

well, i'm not gonna try any more with this one

i'm interested in this new one: golf.shinh.org/p.rb?Count+Carries

Anonymous

@Katenkyo I'm gonna sleep more, then coffee :P

@Mego Then take a tea before sleeping, it will help you sleep well, and be awake when you wake up :p

things a student have to do when he's alternating 3h work/1h sleep at night to be able to do all its projects

7:23 AM

@xnor f=lambda a,b:a*b and... ... damn :P

STDIN input really changes everything

yeah

8:05 AM

@xnor Hmm, this is pretty hard. I don't see how you dropped 2, let alone mitch's 21. The closest useful thing I've found is this, but I don't think it works for base 10

i'm finding a lot of promising-looking solutions to be lengthy

conversions back and forth from int to string are costly

zip is finicky with truncation

i don't know what magic mitch is pulling

... and map is finniky with Nones :/

Yeah, not sure whether int's better or str's better here

ooh, i got something

11 to go

:o nice

why does this type of question gets put on hold instead of being deleted?

8:20 AM

Close votes happen first, then delete votes I think

someone help make the dark theme better

Still bugging me, but thanks for the reply ^^

code-golf string kolmogorov-complexity typography

Hmm 86. Well I think I know what xnor's "11 to go" was :P

New Main Posts

8:40 AM

1

Q: LaTeX Table Generator

Write a function or program which, given a number of lines and columns, generates a corresponding tabular environment for LaTeX with no data in it. Table format and tabular Environment Here is an example of a table with 2 rows and 4 columns: As you can see, we do not count the first row nor ...

9:11 AM

also, can anyone help improve this old abandoned userscript from here? (the differ is slightly broken)

10:54 AM

evening

Good morning, whoever you are (your name is displayed as loading... ^^)

I'm very tempted to change my name to loading...

in The 2nd Monitor, 1 hour ago, by Vogel612

Code Review swag has arrived

Too late, your profile pic loaded now, Hi Quill!

More than the swag, I love th Quack :D

sechat.quickmediasolutions.com :D

11:12 AM

// You are officially a genius if you can understand what this
// RegEx I wrote does:

^- i really don't think the regex is hard to understand

especially to people from code golf/retina experts

^

but look at the differ i wrote D:

doesn't even work properly

also, forgot to change it to html

Is Quill's first reaction to any post that includes code to review it? :P

today i discovered stackapps.com/questions/tagged/script

now i have about 6 userscripts just for SE D:

11:16 AM

@Sp3000 pretty much

Challenge idea: Write a piece of code in under 50 bytes that'll cause Quill to leave the most code review comments on it

5

@Sp3000 too subjective

@Sp3000 :)

how to make people at CR cry: only use recursion and ternary in your code, even when it doesn't fit (need a switch? :D)

what happens if you post a Jelly program to CR?

11:23 AM

@somebody if it is well-written, they'll help you golf it down?

@Katenkyo I love ternaries with a passion

@Katenkyo Golfing is off-topic

_=input("")
p=P=1
while _-p:p=p+1;P*=_%p<1
print P

... I tried my hardest

@Quill Yeah, but a well written source is a well written source, isn't it? ^^

@Sp3000 bad network, sadly...

:)

@Sp3000 no tabs?

11:32 AM

We do style suggestions on Esolangs though

Our Mod, Simon, does Brainfuck style suggestions

@grc Ah, that's a good one :P

protip: you can have up to 7 spaces before each tab without changing the indentation level

11:46 AM

@Quill Is there a lot of BF questions? Oo

codereview.stackexchange.com/questions/tagged/…

(I'm actually trying to go on CR.se by myself, but can't even load the main page...)

22

A: Hello, Brainfuck

Brainfuck Multiplication Elaborating a bit more about 200_success' multiplication, and the "shorter, less readable version, using similar ideas, but with more cell reuse": The ASCII values of what you want to write is, as 200_success mentioned: 72 101 108 108 111 44 32 87 111 114 108 100 33 ...

needs opinions on what unicode emoticons are vital

@Quill wow.... That's impressive!

11:54 AM

codereview.stackexchange.com/a/104022/64391 <-- Looks like Simon self-reviews too

(you can do that?)

yeah

I love his comments

> boolean is always one... no shit sherlock

12:15 PM

5

didn't make the 50-byte limit, but I'm quite proud that it's a working factorial program

nice comment

i couldn't have figured else

I love the sixth line

@Optimizer I heard that it's important to include comments

I only see comment

no comments

oops

at least the code is readable

12:21 PM

with all those tabs.. I don't think so

but I've got spaces there too

best of both worlds

@grc Nice! You're just one public static void main away now...

@grc 50-byte limit?

@grc yeah, and then your code also ends up like Miley

eh how do you quote a comment in chat again?

12:23 PM

link

1 hour ago, by Sp3000

Challenge idea: Write a piece of code in under 50 bytes that'll cause Quill to leave the most code review comments on it

@Quill ^

Cᴏɴᴏʀ O'Bʀɪᴇɴ

with(window){var varName=094;location+=varName}

oh hey

that's me

@CᴏɴᴏʀO'Bʀɪᴇɴ is that an entry?

@CᴏɴᴏʀO'Bʀɪᴇɴ why does js allow 094 o.O

big questions going on in my mind, is it better to format your code like `while''{

}`or like `
while''
{

}`?

Hum, that broke the formatting? Oo

12:36 PM

{while (condition) (code)}

@grc One liner aren't always the best :)

i = 0;
while (i < 5)-{
	line_1: console.log(i),
	line_2: i++,
}

^ built in line numbering

Arf, guess i'll have to change my habits so ^^'

@grc nice troll

:D

you could also use parentheses around the braces instead of the -