The Nineteenth Byte

quintopia

3:00 AM

Okay.

Alex A.

@Calvin'sHobbies Time to post?

Dennis

OK, this time I checked, and the user is definitely replacing characters with their UTF-8 encodings.

Alex A.

The user doesn't even have an account

Dennis

Nope.

Alex A.

dafuq then.

quartata

3:05 AM

I just got Enthusiast on Meta how

Also, I failed to get 2 challenges ready

Sorry Calvin :/

Alex A.

@quartata I have fanatic on meta and triple fanatic on main.

@quartata Do you have any ready?

quartata

@AlexA. 20 days away from Fanatic

@AlexA. Nope

Alex A.

@quartata Nice

quartata

The grocery store one needs better grids

It would take me about an hour to fix them

And besides it isn't Sunday anymore in UTC time

so

Maltysen

3:16 AM

I can post a challenge now if people want, I need to finish writing it though.

Alex A.

Main is going to be chaos within the next couple hours. :P

Maltysen

Given N points, determine if they make up a regular polygon

Alex A.

That's a generalization of the valid triangle one, right?

Maltysen

you mean this one?

17

Q: Three-pointer! But what kind?

From http://en.wikipedia.org/wiki/Triangle: Write a program that takes three 2d coordinate tuples (Cartesian), and classifies what shape these three points describe. In almost all cases these points will describe a triangle of varying types. In some degenerate cases, the points will either ...

Alex A.

No

There was one by a new user that got downvoted into oblivion but also got a ton of answers

Anonymous

3:18 AM

@Dennis That is indeed what is happening. Technically it could be Latin-1, but still, it's wrong. I'm rejecting them as fast as I can.

ןnɟuɐɯɹɐןoɯ

Guys, what's wrong with my account?

I got a message about a sock account.

I don't understand.

Doorknob

@ןnɟuɐɯɹɐןoɯ Details of events such as these are typically kept private (by the moderators), via the mod message interface.

(If you'd like, we can have this discussion in public though)

ןnɟuɐɯɹɐןoɯ

Well, I find this awfully strange.

What?

I could discuss this in public, though. Why not?

Doorknob

Okay, sure.

ןnɟuɐɯɹɐןoɯ

Eh... who's that?

Doorknob

3:30 AM

That's only about half of the whole thing—there was an account that had 44(!) upvotes on yours.

ןnɟuɐɯɹɐןoɯ

@Doorknob ???

What is this?

Sorry if I don't understand, but um... what?

Dennis

User qwerty posted a single answer on this site, in the language you invented, and uses the same IP you use.

Doorknob

After looking into it, we found that evidence of sockpuppet voting was fairly clear.

ןnɟuɐɯɹɐןoɯ

Wait, what?

I still don't understand.

I find the statement "same IP" very strange.

Maltysen

uhhhhh, sorry to interrupt this, but what should I do for my falsey test-cases?

I'm right now putting random numbers that aren't regular polygons, but there prolly are better things I should be testing for

El'endia Starman

3:36 AM

@ןnɟuɐɯɹɐןoɯ Are you at a university or something like that?

ןnɟuɐɯɹɐןoɯ

@El'endiaStarman No, I'm at home!!! (Actually, I do post at school sometimes.)

El'endia Starman

There's a possibility that you and another person appear to have the same IP, which can happen if you're using a school's or corporation's internet.

Doorknob

@El'endiaStarman After a bit of investigation, we found pretty solid proof of sockpuppet voting nonetheless. (As in, it wasn't just IPs.)

El'endia Starman

Alright. [nods]

Alex A.

@Maltysen Idk, that sounds fine to me.

SuperJedi224

3:39 AM

Bye guys

Alex A.

Saw bul!

Maltysen

Alex A.

@Maltysen AhhhhhhSHIT this is adorbs.

Maltysen

we should have the facebook messenger giphy thing on SE chat

Alex A.

Haha

Well you could Meta.SE chat feature-request

El'endia Starman

3:43 AM

I know what Facebook Messenger is. I have an idea of what giphy is. But, both together?

Maltysen

@El'endiaStarman messenger underlines random words, and when you click on them, it lets you selects pertinent gifs .

El'endia Starman

Ahh, interesting. I've not seen that before.

(Granted, that's probably largely because I don't have Facebook Messenger. And that's because I don't have a smartphone. :P)

(...yet. Waiting for my current one to die. Which might take another year or two...)

Alex A.

You don't need one to use Facebook Messenger.

I use messenger.com.

Maltysen

also hangouts

Alex A.

That's Google Hangouts though, not FB. Right?

Maltysen

3:47 AM

yeah

they got an actual site so you aren't forced to do it from gmail, at hangouts.google.com

Alex A.

Oh nice

I don't have a gmail account so that's nice.

Maltysen

but its the exact same widget on a fancy background, so its pretty stupid

Doorknob

Oh! Last time I checked, you could only use Hangouts via the Chrom{e,ium} extension thingy.

Calvin's Hobbies

@AlexA. Are you guys actually waiting for me? (Sorry, I've been offline most of the day.)

But yeah, I'm posting about now

Doorknob

I still haven't written mine >_<

Alex A.

3:53 AM

@Calvin'sHobbies Yes. And why would you be offline?

Doorknob

(I do have the idea though)

@AlexA. What is this "offline" you speak of

Maltysen

Posting mine...

Alex A.

@Doorknob I've only heard about the fabled offline, I haven't experienced it myself.

Anonymous

My masterpiece:

Anonymous

0

A: The versatile integer printer

JavaC++C, 363/8 = 45.375 Java prints 1, C++ prints 2, C prints 3. Not winning any records here (because Java), but I really like the clever, abusive way of making a polyglot in these languages that I discovered. //\u000a/* #include<stdio.h> #ifdef __cplusplus #define o "2" #else #define o "3" #...

Doorknob

3:59 AM

that was a quick 3 questions in a row

Anonymous

Except I messed up scoring it

El'endia Starman

Posted!

Anonymous

And I was away from my computer all day so I couldn't finish up my challenge :(

Doorknob

Four in a row, wow

upvotes ALL the things

Alex A.

:D

Anonymous

4:01 AM

I could write up a challenge real quick and skip the sandbox :P

Anonymous

Or get some super-speedy feedback in here

Doorknob

Sandbox? What's a sandbox?

That's 5

Alex A.

5?

Doorknob

questions

Alex A.

Oh it didn't show the fifth for me on Questions for a bit

Oh @CᴏɴᴏʀO'Bʀɪᴇɴ was going to post his as well.

Anonymous

4:04 AM

My challenge idea: code-challenge Verify the Goldbach conjecture (all even integers > 2 can be expressed as a sum of 2 primes) for as many integers as possible within a minute (timed on my machine). The highest value you verify is the score you get, highest score wins. You must print out the highest integer and the two primes whose sum equals the integer within the minute, or you receive a score of 0. You may print out as many integers and prime summands as you wish

El'endia Starman

Hmm. Gonna go ahead and post a second challenge.

Anonymous

But only the last integer and summand pair printed will be used for the score

New Main Posts

3

Q: Is it a Regular Polygon?

A regular polygon is a polygon that is equiangular (all angles are equal in measure) and equilateral (all sides have the same length). Your job is to find out if a given polygon is regular or not. Specs You will be given a list of Cartesian coordinate 2-tuples which describe the polygon's ver...

code-golf geometry

3

Q: Can't see the forest for the keys

Write a program or function that takes in a nonempty list of integers in any reasonable convenient format such as 4, 0, -1, -6, 2 or [4 0 -1 -6 2]. Print or return a string that depicts the list as an ASCII art forest where each number becomes a tree of proportional height. Each tree takes up fo...

code-golf ascii-art kolmogorov-complexity

2

Q: Programming Puzzles and Taco Truck

Programming Puzzles & Code Golf has opened a taco truck! The word is out and now users from all over the Stack Exchange network are coming to try our tasty, authentic ASCII tacos. We need your help to ensure that everyone gets their orders in a timely manner. There isn't a whole lot of room insid...

code-golf ascii-art

2

Q: Pythagoras' Other Leg

Pythagoras had his leg blown up in the war. It had to be amputated, and though he nearly died, he pulled through and made a full recovery. Now, after a year of walking with crutches, he gets the privilege of getting a prosthetic leg! Thing is, though, there are several that fit, but which ones? ...

code-golf

3

Q: Seven's Cycle Sum Sequence

Take a look at the sevens multiplication table from 7×0 to 7×9: 0, 7, 14, 21, 28, 35, 42, 49, 56, 63 If we just look at the digits in the one's place we get a permutation of the digits 0 through 9: 0, 7, 4, 1, 8, 5, 2, 9, 6, 3 Consider taking some positive decimal integer N and replacing ea...

code-golf number arithmetic sequence

Anonymous

Sound good?

Doorknob

I'm quickly writing up one of my own

@NewMainPosts ahahahaha

Alex A.

4:04 AM

Hahahaha

El'endia Starman

:D :D :D

Anonymous

Holy spam, Batman!

Alex A.

all of a sudden: SLAM ALL THE CHALLENGES

Anonymous

What do you guys think of my challenge?

El'endia Starman

Aaand second one's posted!

Anonymous

4:06 AM

We've had a Goldbach-related code-golf (given an even integer > 2 as input, verify the conjecture), but not a fastest-code or code-challenge (whichever would be better for this challenge)

Alex A.

Eh, given that we've had a code golf of it already, I don't think another challenge with different scoring adds that much.

IMO anyway.

Calvin's Hobbies

3 challenges posted

Anonymous

I dunno. Having a time limit and scoring by highest value verified would result in drastically different answers/strategies.

Alex A.

@Calvin'sHobbies Is this your record for most posted in one day?

Calvin's Hobbies

I think I did 3 before once but one of those may have been deleted.

Anonymous

4:11 AM

@Calvin'sHobbies @El'endiaStarman @Doorknob what are your thoughts on my proposal?

Doorknob

too busy quickly writing up my own challenge :P

El'endia Starman

(Skyping with my fiancée at the moment...)

Reto Koradi

@AlexA. Are all your challenges food themed?

Calvin's Hobbies

Yes

Alex A.

27

Q: Fond Memories of Past Primes

Consider a prime number p, written in base 10. The memory of p is defined as the number of distinct primes strictly less than p that are contained as substrings of p. Challenge Given a non-negative integer n as input, find the smallest prime p such that p has memory n. That is, find the smalles...

code-golf string primes

2/3 are :P

Calvin's Hobbies

4:12 AM

Fondue*

Alex A.

Fondue memories?

New Main Posts

1

Q: When Bullets Collide

This challenge is based off a riddle I read in some book a while ago, which I found again here. It is about bullets fired from a gun once per second at varying speeds that travel in a straight line forever. When one bullet hits another, both are destroyed completely. (Feel free to replace all ins...

code-golf

2

Q: Can I string all my cords and adapters together?

Suppose one day you are digging through your big box of unused computer cords and adapters (USB to USB mini, VGA to DVI, etc.). There are tangled cords everywhere making quite a mess, and you wonder if you could simplify things by attaching all the cords together in one long strand, and then just...

code-golf string

El'endia Starman

Dang, @Dennis. Fastest golfer in the west, as usual. :P

Alex A.

Let's see how many of our challenges @Dennis will answer before he goes to bed. :P

Calvin's Hobbies

@Mego What would the code-challenge be? Or how would fastest code work? The fastest to disprove the conjecture wouldn't quite work I think :P

Alex A.

4:15 AM

Three messages that end with the same smiley: :P

Dennis

@AlexA. That's probably the only one. Kinda busy implementing Jelly.

Alex A.

@Dennis nooooooo do mine :D

In Jelly

Dennis

Not possible right now.

Alex A.

Oh, okay.

Anonymous

@Calvin'sHobbies The goal would be to find the largest even integer which is the sum of two primes within the time limit, with the requirement that you have to actually find two primes that sum up to the integer for every integer below it.

El'endia Starman

4:16 AM

My two challenges are now at the scores they were in the Sandbox. :P

Anonymous

So basically, verify the Goldbach conjecture for as many integers as possible in the minute time limit

Anonymous

So I guess it'd be more code-challenge than fastest-code, since the time limit is fixed

Dennis

@AlexA. Right now, Jelly can only concatenate strings, and only supports string literals that do not contain characters corresponding to instructions. :/

Alex A.

@Dennis Haha that's too bad. I'm sure it'll get there eventually though. ;)

But in the meantime, I'm sure CJam would love for you to use it for taco making...

Anonymous

Ooh, better one that's not a dupe

Anonymous

4:18 AM

Given n, print the nth Leonardo number

Alex A.

DiCaprio?

Anonymous

No

Dennis

@AlexA. It's getting there. The next revision will identify number literals using this regex:

-?(?:[0-9]+(?:\.[0-9]*)?|(?:(?:[0-9]*\.)[0-9]+))(?:ı-?(?:[0-9]+(?:\.[0-9]*)?|(?‌:(?:[0-9]*\.)[0-9]+))?)?|(?:-?(?:[0-9]+(?:\.[0-9]*)?|(?:(?:[0-9]*\.)[0-9]+))?ı)?-‌?(?:[0-9]+(?:\.[0-9]*)?|(?:(?:[0-9]*\.)[0-9]+))

Anonymous

Actually that's too close to Fib numbers

Dennis

Disclaimer: I have no idea what I'm doing.

2

quintopia

4:19 AM

How about: given two sets in unioned interval notation, output the unioned interval notation corresponding to the intersection of the sets.

Alex A.

@Dennis Holy smokes what a regex

Anonymous

@Dennis Now you have 2 problems

Dennis

I actually have a lot more. The regex seems to be fine though.

Anonymous

Or maybe print the nth Hilbert prime

quintopia

@Mego do you like mine

Alex A.

4:22 AM

@Mego ASCII penguin

Anonymous

@AlexA. I dislike ASCII art challenges

Alex A.

:(

So you won't do tacos in Seriously?

Anonymous

@quintopia That seems like it should have been done already

Anonymous

@AlexA. Probably not

Alex A.

u___u

Doorknob

4:23 AM

Almost done with my challenge, just have to finish the test cases

Disclaimer: written while sleepy in like 20 minutes, possibly terrible :P

quintopia

@Mego I can't find it in search, so I'll take that as a "yes please do it"

Anonymous

@quintopia gopher it

Anonymous

There, done

Anonymous

Hilbert primes challenge posted

Alex A.

@El'endiaStarman Your leg challenge was a good use case for Julia's hypot function. :)

El'endia Starman

4:36 AM

@AlexA. :D

New Main Posts

2

Q: Hilbert Primes Golf

Hilbert numbers are defined as positive integers of the form 4n + 1 for n >= 0. The first few Hilbert numbers are: 1, 5, 9, 13, 17, 21, 25, 29, 33, 37, 41, 45, 49, 53, 57, 61, 65, 69, 73, 77, 81, 85, 89, 93, 97 The Hilbert number sequence is given by OEIS sequence A016813. A related number se...

code-golf math sequence

Dennis

OK, Jelly needs filtering capabilities asap.

Zgarb

I posted my challenge too.

xnor

was there a challenge posting party i missed?

Calvin's Hobbies

Yes

quintopia

4:53 AM

how do i embed TeX math?

Zgarb

@quintopia You'll have to use pictures, MathJax is not supported on the main site.

Anonymous

One challenge down

Calvin's Hobbies

@quintopia I believe your proposal has been done

quintopia

@Calvin'sHobbies pls provide link. i cannot find.

Anonymous

I'm quite happy with my challenge

New Main Posts

5:00 AM

5

Q: Partition into increasing subsequences

Specification This challenge is simple to state: your input is a non-empty array of nonnegative integers, and your task is to partition it into as few increasing subsequences as possible. More formally, if the input array is A, then the output is an array of arrays B such that: Each array in B...

code-golf subsequence set-partitions

Anonymous

Getting +5/-0 in 25 minutes without sandboxing it feels good

Alex A.

@xnor Yes. If you can think of one, post it quick! :D

El'endia Starman

:D

Alex A.

Nice challenges, all who have posted so far :)

Anonymous

We're trying to get the useless statistic over 10

El'endia Starman

5:01 AM

Agreed. :D

Anonymous

8.2 right now

El'endia Starman

We've got 9 so far! :D

For this spree, that is.

Anonymous

I'm working on thinking of more :P

El'endia Starman

Same.

Anonymous

Reading a bunch of random wiki and mathworld articles

El'endia Starman

5:03 AM

I'm thinking of "Pythagoras' Girdle". A nested set of 3 triples that use 5 numbers.

As in, right triangle + perpendicular bisector of hypotenuse that goes through the right angle produces two other right triangles. Given the length of this segment, find all possible sets of the four other numbers.

It's pretty related to the Pythagorean challenge I posted.

Anonymous

I should do something other than integer sequences for once :P

Anonymous

Ooh, I have an idea

Anonymous

Given an input integer n, do the following:
1. Roll 1 n-sided die, and print the result
2. If the result is greater than or equal to the mean value of a single die times the number of dice in play, add another die and reroll. Else, subtract a die.
3. Stop when the number of dice is equal to 0 or n.

Anonymous

(always printing the # of dice rolled, how many faces, and the result, in the format kdn: x for k dice with n faces and result x)

quintopia

5:21 AM

Okie I sandboxed it. Please tell me if it can be posted.

AGZuniverse

Hey guys

remember I was trying to solve a elf file encoded thingy yesterday?

quintopia

i remember the song

AGZuniverse

I have managed to get a python program that should do the trick. Only thing is, I need a 32 bit linux distro to do it

lol I never got the song

@mego, would you be kind enough to run the program for me?

yesterday you seemed to have a way to run the file

Dennis

jelly.tryitonline.net/… sobs

Anonymous

@AGZuniverse Sure, gimme a minute to finish writing a challenge

AGZuniverse

5:27 AM

okay, ping me when you're done :)

El'endia Starman

@Dennis I pity you... :(

But post it anyway!

New Sandboxed Posts

0

A: Sandbox for Proposed Challenges

Note: this is so obvious it has probably been done but i can't find it. Lots of stuff with set intersections, but none with intervals. If I'm just bad at searching, please link it and I'll delete. Find the Intersection of 2 Sets in Unioned Interval Notation Given two sets of real numbers descri...

quintopia

^someone please comment

Anonymous

Second challenge up

Anonymous

@AGZuniverse ping pong

El'endia Starman

5:32 AM

@quintopia I don't understand the first example.

Wait, yes I do.

But it's worth illustrating it or at least explaining it.

quintopia

@El'endiaStarman how can i make it clearer

oh okay

AGZuniverse

Okey great

@Mego, this is the code :pastebin.com/ehLNVzbC

El'endia Starman

-90     -4  4    90
    -50       50

AGZuniverse

The file in question is the same pizazz

Dennis

@El'endiaStarman Done.

0

A: Pythagoras' Other Leg

Jelly, 8 bytes ²R²+²Æ²O This answer is non-competing, since it uses features that have been implemented after the challenge was posted. Try it online! How it works Input: x ² Compute x². R Get get range 1 ... x². ² Square each integer in that range....

AGZuniverse

5:34 AM

should I provide the download link for that again?

Dennis

Let's see when I can actually get a competing Jelly answer...

Anonymous

@AGZuniverse I still have it

quintopia

@El'endiaStarman does this explanation i just added help?

AGZuniverse

Okay, see what happens when the program is run

El'endia Starman

@quintopia Not as much as I would like.

Anonymous

5:36 AM

Booting the VM

AGZuniverse

Thanks, few people are this helpful in online rooms :)

El'endia Starman

-90 ------- -4  4 ------------ 90
     -50 ------------- 50

Anonymous

@AGZuniverse flag{Z-0rder_curv3s_and_janky_p3rmutat10ns_FTW}

El'endia Starman

@quintopia: Some sort of ASCII diagram like that would help a lot, I think.

AGZuniverse

Thanks a lot! That was correct

Anonymous

5:38 AM

You're welcome :)

El'endia Starman

@quintopia: Looks great! :D

Anonymous

I like it

Anonymous

Incoming dice challenge

quintopia

Okay...posting it.

Anonymous

Tonight is a good night for code golf

Anonymous

5:41 AM

People are going to come online and be like "wtf is with all these challenges"?

Anonymous

10 so far, suck it Area 51 stats

AGZuniverse

lol

xnor

i'm excited about all these challenges, but maybe this is too much?

Anonymous

@xnor no such thing

xnor

I feel like each one won't get the golfing attention it deserves

El'endia Starman

5:42 AM

Yeah, I don't think we'll do this again for a while. :P

Anonymous

As long as they're quality challenges, there's no problem with challenge sprees

New Main Posts

3

Q: Iterated Dice Rolling

Given an input n where 1 <= n <= 25, perform the following steps, starting with a single n-sided die: Print the result of rolling the current n-sided dice in play, in the form kdn: X (where X is the result and k is the number of dice in play). If X is greater than or equal to n/2 times the numb...

code-golf random

Anonymous

@xnor Since anyone can answer at any time, that's not an issue

El'endia Starman

Well, I do agree with xnor. Posting 10 challenges in an hour kinda..."dilutes" the challenges.

Anonymous

It'll be fine

El'endia Starman

5:44 AM

11 challenges now. :P

Anonymous

Yep, we're awesome

Anonymous

The creative juices are flowing

Anonymous

1 hour and no close votes on any of them \o/

El'endia Starman

Were flowing, in my case. I posted from the Sandbox. :P

Anonymous

Mine were made up on the spot :P

Anonymous

5:46 AM

Channeling my inner Calvin

5

Alex A.

@xnor Yeah I realized that earlier... Oh well. If you're feeling like ASCII arting, there's a taco waiting for you. :P

New Main Posts

1

Q: Find the Intersection of 2 Sets in Unioned Interval Notation

Find the Intersection of 2 Sets in Unioned Interval Notation Given two sets of real numbers described as the union of intervals, output a description of the intersection of these two sets as a union of the same type of interval. The input sets will always consist of unions of intervals such th...

code-golf number set-partitions

Dennis

What is going on? o_O

Alex A.

11.

There are 11.

Helo Steck Exchan can has graduate pls

15

Dennis

@AlexA. Tacos will have to wait til tomorrow. My tired brain cannot comprehend...

Alex A.

5:53 AM

@Dennis Haha fair enough. Is it hard?

quintopia

I have another in mind, but it would take several minutes to describe...and it would be pretty difficult.

Dennis

@AlexA. Probably not, but golfing it properly will be. Right now, I'd probably make some mistake with the repetitions or the wrapping, but that's just because I'm 50% asleep.

Alex A.

@Dennis You should go be 100% asleep. :)

Dennis

Will do. Good night, y'all!

Alex A.

Goodnight!