The Nineteenth Byte - 2015-12-06 (page 6 of 8)

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Lembik

11:00

you may make me increase x to 3 :)

but let's see

will you try this out?

feersum

I'm not going to go to the trouble of finding a suitable library if you haven't even posted it

Lembik

@feersum this is circular for me!

a

I don't want to post it until it has been tested! :)

this is whole of the sandbox isn't it?

feersum

I guess you'd better test it yourself then.

Lembik

(sympy isprime doesn't work for large numbers...)

@feersum this slightly contradicts the point of the sandbox :)

feersum

It does not.

The sandbox is not a place where you should expect other people to write reference implementations for any question you post.

Lembik

11:05

@feersum I already wrote reference code!

I think that's a bit unfair

I even showed it to you

feersum

"Unfair" ?

It is according to you, that that implementation does not adequately test the question.

undergroundmonorail

recursion

Lembik

hmm.. I think gmpy2 might be the right tool but I can't get it to accept a large integer

@feersum It's not that.. it just doesn't implement your nice idea

2 hours later…

SuperJedi224

12:39

@IsmaelMiguel alert() and prompt() are both blocked already, I think.

Yes, yes they are. At least in Chrome.

I just added blocks for setting innerText and using query selectors

1 hour later…

Nathan Merrill

14:13

@Linus thanks for that bug catch

ev3commander

14:37

:9

1 hour later…

Doorknob

15:45

Quiet in here today...

1 hour later…

Dennis

16:47

Sure is.

quintopia

17:02

Sunday

Dennis

17:12

crickets

AGZuniverse

Hi @quintopia, I believe you were there today morning when I was trying to solve a elf file based challenge

Do you and @dennis have some free time now?

Nathan Merrill

let S(x,y) be the sequence of non-negative integers that don't include any multiple of x or y

(so the fizz buzz sequence without the fizzes or buzzes)

let F(x,y) be the (x*y)th value of S(x,y)

Is there an implementation such that F(x,y) can be O(1)?

for example: if x was 4, and y is 7:

1,2,3,5,6,9,10,11,13,15,17,18,19,22,23,25,26,27,29,30,31,33,34,37,38,39,41

41 is the 28th item

so F(4,7) = 41

feersum

nvm, misunderstood the problem

Cᴏɴᴏʀ O'Bʀɪᴇɴ

17:31

I don't know if the chat has ever been this quiet o_o

Maybe Google is participating in a golfing competition, and seeks to buy us all out.

Anonymous

@Lembik rosettacode.org/wiki/…

Anonymous

Whenever I'm on SO I miss being able to see vote breakouts :(

Anonymous

@Lembik using the current-best prime tables for Miller-Rabin, the upper bound on deterministic testing is not known, though it's at least 2^64

ProgramFOX

@Mego There is this userscript as a workaround :)

Anonymous

@ProgramFOX That's cheating though :P

ProgramFOX

17:46

Yes it is. :P

Linus

17:58

@NathanMerrill No problem. Just toying with vote records and getting odd results.

Nathan Merrill

are you planning on more submissions?

Dennis

@AGZuniverse Not much, unfortunately.

Nov 28 at 12:59, by Dennis

Most idiotic "privilege" ever, if you ask me. There's literally no reason to prevent anyone from seeing this.

ןnɟuɐɯɹɐןoɯ

Hey y'all, I have a question. Is this considered a real quine?

Martin Büttner

looks dodgy

Nathan Merrill

hmmm

I'd have to say no

Martin Büttner

18:09

and fails this definition meta.codegolf.stackexchange.com/a/4878/8478 (although I don't think that's a perfect definition)

Nathan Merrill

wait, how does CJam quine work?

nevermind, its on that page

ןnɟuɐɯɹɐןoɯ

Ah well... I'll put in the cheating quine section.

Thomas Kwa

@Dennis Seeing the vote breakdown may influence others to suppress their upvotes if there are many downvotes.

I guess that could be a good thing if it causes people to vote more carefully

Cᴏɴᴏʀ O'Bʀɪᴇɴ

18:33

mini-challenge take an array as input and output a random element of it

Nathan Merrill

1

Q: Finding the $(n*m)$th element in a sequence without multiples of $n$ or $m$

Let $S(x,y)$ be the sequence of positive integers without any multiples of $x$ or $y$. For example, $S(4,7)$ would be: 1,2,3,5,6,9,10,11,13,15,17... Now, let $F(x,y)$ be the $(x*y)$th element of the $S(x,y)$ sequence. Using the above example, $F(4,7)$ would be $41$. I'm looking for a formul...

sequences-and-series

Optimizer

l~mR

Cᴏɴᴏʀ O'Bʀɪᴇɴ

lang?

Optimizer

cjam

Cᴏɴᴏʀ O'Bʀɪᴇɴ

nice

K r ^_^

Lembik

18:39

hi all

Cᴏɴᴏʀ O'Bʀɪᴇɴ

hiya

flawr

heya

Doorknob

o/

Lembik

some questions about meta.codegolf.stackexchange.com/a/7673/9206 a) shall I exclude library primality testing.. b) shall I change 2 to 3 to make it a little harder :)

I think that answer to a) is yes

but I am not sure about b)

Cᴏɴᴏʀ O'Bʀɪᴇɴ

What should incrementing a string/array do? (operator overloading)

Martin Büttner

18:53

ruby actually finds you the lexicographically next string

that would be trickier for (nested) arrays

Optimizer

it should make the value, youtube link for rick rolling

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@MartinBüttner huh. that's interesting.

feersum

It should print <array length> bottles of beer song

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@feersum .__.

Whatever. Sure XD

Nathan Merrill

doing arr++ should increase the size of the array by 1 and set it to null

Optimizer

19:03

*set it to "YOLO"

Lembik

19:14

no comments so I will post :)

@feersum I hope you don't mind but I excluded library primality testers in the end

as I think it makes the challenge more interesting

hi @Optimizer

New Main Posts

1

Q: Find the largest gap between good primes

Following the fine tradition of questions such as Find the largest prime whose length, sum and product is prime , this is a variant on a largest prime challenge. Input Your code should not take any input. Definition We say a prime p is good if p-1 has exactly 2 distinct prime factors. Output...

code-challenge math primes

feersum

@Lembik OK, I won't do it then since it's too boring to write one

Lembik

@feersum :( shame

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Instead of having file.min.extension, we should have file.golfed.extension

Doorknob

but that's not as golfed

Cᴏɴᴏʀ O'Bʀɪᴇɴ

19:29

file.g.extension

Nathan Merrill

we need a character that looks like golf hole

and use that as the extension

Thomas Kwa

@CᴏɴᴏʀO'Bʀɪᴇɴ wait, you know K?

Nathan Merrill

⛳

2

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@ThomasKwa No, sorry ;-;

Nathan Merrill

file.⛳.extension

Lembik

19:32

@feersum is that your downvote too?

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@NathanMerrill mothereff.in/byte-counter#%E2%9B%B3

Nathan Merrill

same length as min

and shorter than golfed

and much more descriptive

feersum

@Lembik No, I haven't opened the question

Lembik

@feersum ah ok

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@NathanMerrill Good point

SuperJedi224

19:34

Hi guys

Lembik

@feersum out of interest.. couldn't you just copy and paste a standard miller-rabin implementation?

rosettacode.org/wiki/Miller%E2%80%93Rabin_primality_test

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@SuperJedi224 hey

feersum

@Lembik How is that different from using a library?

Nathan Merrill

if I were to make an emoji based language, but only use 256 of them, would we allow the characters to be 1 byte each?

Lembik

@feersum I was wondering the same thing! :)

New Sandboxed Posts

19:37

0

A: Sandbox for Proposed Challenges

What shape is that polygon? Given an ASCII figure made of /, \, |, and _, write a program that determines (1) if the figure is a closed, non-self-intersecting polygon (meaning it has at least three sides that connect to form a loop), and if so, (2) how many sides the polygon has and (3) if the p...

Lembik

@muddyfish are you about?

@muddyfish how is my question different from any other optimization problem or indeed codegolf.stackexchange.com/questions/35441/… ?

ןnɟuɐɯɹɐןoɯ

@NathanMerrill If you can get the encoding to work in your interpreter.

Nathan Merrill

in my interpreter, it would read them as the full 3-byte versions

feersum

Encodings that the interpreter can't actually use should not be allowed in answers.

Lembik

@muddyfish This is an optimization problem at heart and there is no one optimal answer. You would have to go to a lot of effort to cheat here but running your code for more than 2 minutes and then rewriting your answer with that answer hard-coded in. I think you could do something similar for lots of questions on PPCG if you were so inclined.

Nathan Merrill

19:47

so, I'd have to define the encoding (so I assign ⛳ to 00000000, and so on), and then read it in as that?

feersum

@NathanMerrill Yes

Nathan Merrill

if somebody posts their solution, then all of the characters would come out in messed up ascii

rather than the pretty looking emoji

feersum

For convenience you could have an interpreter flag that reads the code as utf-8 instead

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Jolf is almost 1000 lines \o/

and almost 20k characters \o/

s/\r\n/\n/g saved 900 characters XD

Cᴏɴᴏʀ O'Bʀɪᴇɴ

20:07

contribute.jquery.org/style-guide/js/#semicolons

muddyfish

@Lembik I'm here now

I think I disagree with the concept that there is no full answer,

I think that it would be better (not necessarily for your question) if problems actually had an end

such as fastest-code return first N good primes

(yes that downvote was mine, retracted it now)

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@muddyfish I found another good person :D

muddyfish

ok?

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Yah! I like people who retract their downvotes when the problem is fixed/better

You're number three :P

muddyfish

I think the only problem was that I didn't like the type of question being asked but it seems its ok in the community

So there wasn't really a problem in the first place ;)

(apart from me)

;)

Cᴏɴᴏʀ O'Bʀɪᴇɴ

20:18

XD I see.

Lembik

@muddyfish ah you prefer questions that have a single optimal answer?

@muddyfish thanks for retracting the downvote

muddyfish

apart from stuff like king-of-the-hill and other obvious tags like that

doesn't have to be a single answer, answers can get the same score in code golf

got to be equal to all winners

Lembik

@muddyfish ok.. so I have posted a number of challenges like codegolf.stackexchange.com/questions/26459/…

@muddyfish and also the linked question is like mine codegolf.stackexchange.com/questions/35441/…

@muddyfish what's the important difference between doing a fixed number of things as fast as possible and doing as many things as possible in a fixed amount of time?

muddyfish

I'd use the fastest-code tag or something as a winning condition

then it's obvious the problem ends

(assuming thats how the tag works)

Lembik

but doesn't a time limit of 2 minutes also supply an end?

muddyfish

20:24

your arguing with a person here. people are stupid sometimes

(even someone as wonderful as me)

Lembik

:)

muddyfish

:)

Lembik

I don't think anyone on PPCG is stupid!

my latest problem is the mathematica answer

which requires me to install mathematica :)

and is also a little cheeky

luckily the score isn't very high :)

so it won't win

Cᴏɴᴏʀ O'Bʀɪᴇɴ

@Lembik me thanks yous for yourz butiful complament

muddyfish

for the cake cutting contest, i rewrote the php answer to be in python so I didn't have to install php ;)

Cᴏɴᴏʀ O'Bʀɪᴇɴ

20:30

@muddyfish Most of my KotH entries are based of off TF2 :P

muddyfish

lol

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Demoman, Pyro, Spy

muddyfish

6 left

then you don't have to answer any more koth challenges

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Yup!

Soldier and Heavy would be pretty easy to fit in

muddyfish

MEDIC!?

Cᴏɴᴏʀ O'Bʀɪᴇɴ

20:37

Oh, yeah.

Erm... in a team KotH that would work.

muddyfish

Mafia/Werewolf if that one ever gets posted?

Cᴏɴᴏʀ O'Bʀɪᴇɴ

Or that!

muddyfish

I really want to participate in that challenge, Werewolf is one of my favorite games to play (played a 40-50 player game at worldcon last year)

SuperJedi224

That sounds like it could make a good KotH if done right.

The forum game version is my favorite, but the original is also fun.

1.4 trillion total soups have been submitted for standard life

Alex A.

I didn't realize anyone could eat that much soup

SuperJedi224

20:43

I don't think I'm ever going to get a slice of that pie big enough to be visible

muddyfish

well

someones probably hungry

SuperJedi224

My contribution to that is probably around 7 million soups

That's about 1/200000, I think.

muddyfish

only 7 million? slacker.

SuperJedi224

I've submitted a few million extra for a couple of other rules, that's just my contribution for that specific rule

Alex A.

Ever wonder what your average score on a code golf answer is? Well now you can find out! data.stackexchange.com/codegolf/query/404502

3

muddyfish

20:46

woo!

SuperJedi224

And I'm about to add a couple million more

muddyfish

is lower better?

Alex A.

No

Cᴏɴᴏʀ O'Bʀɪᴇɴ

My average score is 3.1 .___.

Alex A.

It's the net score on a post, so upvotes - downvotes.

@CᴏɴᴏʀO'Bʀɪᴇɴ Mine's only 3.7 or so.

SuperJedi224

20:48

Mines only about 2.1

Cᴏɴᴏʀ O'Bʀɪᴇɴ

That makes me feel better :D

Alex A.

:)

Geobits

7.x for me :D

Alex A.

If you wouldn't mind, please star the query post for visibility

4

Not this one ^

The query. ._________.

SuperJedi224

Done.

Alex A.

20:49

Thank you :)

SuperJedi224

Wouldn't it be more visible it were pinned though?

muddyfish

mines 3.3ish

Alex A.

Yeah but pins are for important things. This is just for funsies.

SuperJedi224

I suppose so.

109 060 committed hauls containing 30 780 270 969 857 objects generated from 1 409 173 497 875 soups

Alex A.

Chris Jester-Young has an average of over 16. :O

SuperJedi224

20:51

That means the average haul size was about 14,000,000 soups

Alex A.

@Geobits Wow, nice! :D

SuperJedi224

Which is a lot for one haul

Alex A.

@SuperJedi224 That sounds difficult; soup is pretty heavy. I can't imagine carrying 14 million cans of it.

3

SuperJedi224

@AlexA. ...how.

muddyfish

not imaginative enough? ;)

Alex A.

20:57

@SuperJedi224 I wish I knew. ._.

SuperJedi224

I suppose my page-and-three-quarters of zero-point answers is probably dragging my average down.

Alex A.

Granted, he's been around since the very beginning.

I think CKY's user ID is 3.

flawr

No plane crashes, but some other "accidents": imgur.com/gallery/QnRTd

El'endia Starman

.....WELP. I rep-capped from my question and two-hours-later self answer on SO! o_o

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The Nineteenth Byte

The Nineteenth Byte: General discussion for codegolf.stackexc...

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