Questions tagged [code-golf]

For questions about code golf challenges and/or submissions. DO NOT post code golf challenges themselves as questions here; those belong on the main site or in the Sandbox if you want to get feedback on them.

Filter by
Sorted by
Tagged with
20
votes
25answers
2k views

Announcing Advent of Code Golf 2021! (+ Event challenge sandbox)

Originally from caird coinheringaahing's idea, I thought about how we could do it this year with such a short time before December, and I decided to gather some ideas from previous AoC events. (There'...
1
vote
0answers
46 views

What loopholes should be assumed when a name-specific file is used for code golf?

I have posted this golfing tip for Bash before: In Pure Bash (or any other pure shellscript), use . for looping. It's a tip that recomments using a file whose the ...
9
votes
1answer
236 views

Has there been any large-scale attempt to assemble libraries or programs from aggressively-golfed solutions in a given language?

It occurred to me when I was browsing threads here that there is an immense collection of simple and extremely space-efficient functions on this site. Although I imagine the end result of such an ...
-3
votes
1answer
92 views

What's your favorite code golf video? [closed]

Do you have a favorite code-golf video? Maybe someone golfing before it was cool? Or because it was a way to solve a problem?
4
votes
3answers
101 views

Online tool to determine number of bytes for UTF-8 characters?

Is there an online tool that will tell me the number of bytes in a UTF-8 character? Or, if not, how do I determine this? I'm currently trying to determine the number of the bytes for the left and ...
-4
votes
1answer
144 views

Need help with code golf [duplicate]

What in the world is code golf and how is it important to me? I have already looked in the tour.
4
votes
1answer
70 views

Should "import" statement be included in byte count if I'm not using it directly [duplicate]

Related: On scoring imported functions I knew that if I want to use some imported functions, I had to include "import" statement in the byte count. For example, I want to find out the most ...
1
vote
1answer
90 views

Is returning a longer array allowed?

There exist some questions that it's easier to output an array longer than intended to output, and it costs to slice. Longer array behave like small ones as long as you don't access its length or out-...
1
vote
0answers
63 views

Can we assume computer be fast enough?

Consider such a question Take a program P and an integer n, check whether P halts. You may ...
2
votes
1answer
99 views

What to count in assembly?

Yes, I've checked this post (How are bytes counted in assembly), but I'm asking a different question. I'm asking, if I have an .asm file, an ...
4
votes
0answers
111 views

How should answers that time out be judged?

Suppose a challenger submits a code-golf challenge to do a particular task, together with test inputs. (That is, they've determined that, in order to be convinced that the code in an answer correctly ...
5
votes
1answer
187 views

Byte counting policy for library imports in Factor

As this month's LotM (Forth) was not gaining much participation, I guessed it's partly because it's way too low-level, so I was looking into Factor as a modern, high-level alternative to Forth. If it ...
9
votes
2answers
295 views

Omitting trailing closing parentheses in Excel

When golfing in Excel, it is often possible to omit closing parentheses at the end of an expression. Excel will detect this, add the missing closing parentheses and ask if this is what was meant. ...
0
votes
0answers
96 views

Are Rubik's Cube fewest move type challenges allowed? [duplicate]

We have atomic-code-golf which lets us have challenges involving things other than byte count. So I wonder if Rubik's Cube fewest move challenge (FMC) type challenges are allowed. I see no objections ...
0
votes
1answer
71 views

Do golfing languages support rational number arithmetic?

I proposed this code golf on sandbox: Integer Logarithm Take \$a \in ℤ_{>1}\$ and \$b \in ℤ_+\$ as inputs. Write a function \$f\$ that: $$ f(a,b) = \left\{ \begin{array}{ll} ...
9
votes
5answers
799 views

Ruleset for RGS's Golfing Showdown - competition is over!

RGS RGS stands for RGS's Golfing Showdown, a golfing competition. The competition has ended, final leaderboard at the end of this post! 1 - The format The RGS will be a virtual golfing competition ...
3
votes
0answers
72 views

Is asking for a bounded time complexity allowed?

Say, if someone asks for a code-golf like this: Test primality under polynomial time Given a positive integer, test whether it is prime. Rules The algorithm must have polynomial time complexity in ...
2
votes
1answer
109 views

Are all golfing languages friendly to Unicode?

I'm going to make a challenge involving Mahjong Tiles (U+1F000 – U+1F02F, though I'm going to use only U+1F000 – U+1F021). ...
6
votes
3answers
352 views

Can I use here my own language for code-golfing?

Can I golf in my own programming language here? I ask it 'cause there is no online way to check it out.
4
votes
1answer
279 views

Are transpiler languages allowed?

I recently created a simple little language that transpiles Brainfuck into a format that is half the size of its input. It can be used to compress and decompress Brainfuck programs. Provided I ...
5
votes
1answer
374 views

Zsh: Functions and Math functions

I have been using functions for Zsh submissions for some time. I typically submit the body alone, as the body can be run as a full program with no modification: ...
1
vote
1answer
128 views

Code golf involving GPS?

I planned to ask a code golf involving GPS: What's the current zodiac? Objective: Display the emoji of the zodiac of current time, according to your location. Rules: 1. There's no input....
-1
votes
2answers
147 views

Ethics of Golfing in Assembly or other extremely uncommon languages

My understanding of code-golf in general is that you're to provide the shortest solution in a given language. However, for most challenges, you could safely pick a language no one really is familiar ...
2
votes
1answer
70 views

Is it all right to edit challenge to recognize the winner?

I know that the best answer in a code golf challenge should be the accepted one. Is it a good idea to add a "final positions table" to the end of the post once a winner is found? Something like this: ...
2
votes
1answer
134 views

Does [code-golf] count in bytes or character length

In the code-golf challenges, does it count in bytes or character length. Because one character can 1 byte ranging from charcode 0 to 255, 2 bytes ranging from 0 to 65535, etc.
3
votes
1answer
113 views

Who wins code golf if there is a tie?

On my code golf challenge, there are two tie 24 Bytes answers. The first one (Excel) is great because of the creativity put into it and the second one (MATL) is just skill I think and each one should ...
2
votes
1answer
55 views

Where timing between outputs matters, does the solution need to account for buffering?

In certain languages (i.e. C), writes to streams like stdout can be buffered by default - what this means is that when one calls functions like ...
11
votes
3answers
196 views

Do different ImageMagick tools count as their own languages?

Here is an answer that I made recently: https://codegolf.stackexchange.com/a/181416/70328 A commenter suggested that I could remove convert from my code, and use <...
1
vote
0answers
36 views

Can we pass properties of the input as parameters? [duplicate]

Some challenges require, for instance, lists as input. A list has a property being its size. Several languages have builtins to get properties such as the size for a list (all golfing language, ...
2
votes
1answer
97 views

Can I repost a challenge with different rules? [duplicate]

Recently, I posted a code-golf question about number sequences. However, as I was looking through the question later, I thought to myself, "Wouldn't this be good as a fastest-algorithm question?" It's ...
4
votes
1answer
255 views

Does linter golf require a specific interpreter to be a valid answer for golf?

If someone answers a code-golf challenge in, for example, JavaScript, and as an additional challenge restricts to only code that is approved by http://www.jslint.com/ that answer is valid if an ...
1
vote
1answer
132 views

It seems the consensus on Scratch is to use scratchblocks2 syntax, but what about "when green flag clicked"?

In many code-golf Scratch submissions, I see when green flag clicked used, when when gf clicked is also valid in scratchblocks2. ...
2
votes
1answer
177 views

Need contributions to my new Programming Language

My name is Eduardo and I'm a Computer Science student from Brazil, finishing college by the end of this year. My undergraduate thesis is about the programming language JAEL that I'm developing for ...
1
vote
2answers
202 views

Include characters or just bytes?

I'm using javascript as a golfing language. I've just noticed that the number of characters used in a program may differ from the number of bytes that program takes (due to text encoding?). For ...
1
vote
0answers
70 views

Is a slightly changed compiler allowed? [duplicate]

Some maybe not-intended-to-program languages may have some extra limitations. Is it allowed to change it to solve a problem? If so, how the length go? p.s. marking this topic as duplicate of this ...
7
votes
1answer
280 views

What is the consensus on built ins?

Originally on this challenge I banned built in matrix functions but people complained about it. I then removed the ban but there were few interesting answers given and some people complained and said ...
-2
votes
1answer
137 views

User disobeying rules?

So last question that I posted. i.e : this, I wanted to ask because a specific new user whom I have warned almost on all answer he has posted (5-6) was not following, yet he keeps answering with ...
2
votes
2answers
100 views

Interpret BF (question on repost)

Sandbox : link Interpret BrainF**K : This is usually a very common challenge on a lot of sites and on PPCG we also have this Interpret BF. I wanted to know if we could make a repost of that question ...
1
vote
0answers
59 views

Function not that directly used allowed? [duplicate]

In this answer, the function is defined as With(Math)f=(a,b,c,d)=>... (1) However, f is not used in the function, so it ...
2
votes
2answers
188 views

Why do Jelly submissions get to ignore the `Y` atom in the byte count?

For those not familiar, Y in Jelly joins a list of strings (actually a list of lists of characters) with a newline. In plenty of challenges with text output, Jelly ...
2
votes
1answer
1k views

What is the purpose of "header" and "footer" for C++ submissions using TIO?

What are the rules for using c++ in code golf? In TIO, there is a header section and a footer section. Can you put your #includes in the header section? Do you use this template? ...
1
vote
1answer
90 views

Are fixed input allowed if the bytes count? [closed]

E.g. requiring to call by f(4), and add 1 to the byte count Or maybe when inputting a choice, require input f`!#%` or ...
10
votes
4answers
277 views

Answers still marked as "non-competing"

The community has decided that answers in newer languages can now compete in code-golf (they were previously required to be marked as non-competing). However, now and then I will still come across an ...
10
votes
5answers
212 views

Is my question a duplicate even though it doesn't impose a requirement that the original one did?

I asked a challenge to interpret deadfish here, but it got closed for being a duplicate of a challenge to write an interactive deadfish interpreter here. Is this really a duplicate?
1
vote
1answer
102 views

Bulk editing code-golf answers to add headers [duplicate]

Is it considered bad to edit old code-golf answers to add in headers so that the answers can be easily seen by tools using the SEDE or data dumps? I can see pros and cons to doing this, and I what is ...
3
votes
2answers
267 views

Can I redo the Solve Rubik's Cube challenge?

The challenge Solve Rubik's cube has a lot of flaws: Arbitrary limits: (say, max. 5 seconds on your machine and less than 1000 moves) Cumbersome input format: The input is in the format ...
11
votes
1answer
356 views

Mildly not-safe-for-work challenge?

Related to this thread on reddit: [a link that was determined to be NSFW] Can I submit this as a code-golf question, or is it too inappropriate for StackExchange?
-1
votes
1answer
74 views

Requiring an objectly array in JavaScript

Consider an example challenge: Given a number b and an array a, output the bth element of ...
6
votes
2answers
297 views

What must a C macro do to be a valid answer?

Recently, an answer of Peter Taylor here says: To get a macro equivalent to f(n){n=n?:1;} you need -Df(n)=((n)?:1) ...
-1
votes
1answer
81 views

Is it allowed to take input by repeatedly call a function?

In C, to sum up some numbers, can do: *X;f(x,n){X=x;x=0;while(n--)x+=*X++;} // not sure if return the answer, assuming it does input a pointer ...

1
2 3 4 5