Linked Questions
85 questions linked to/from Showcase of Languages
14
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21
answers
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Constructing Solar Panels from Squares
I'm designing a new space station for generic super-villain purposes (something something megalaser), but I'm having trouble designing the solar panels.
My genius team of scientists can calculate ...
- 11.6k
10
votes
35
answers
2k
views
How long is the number in this base?
Given a positive integer \$n\$ and another positive integer \$b\$ (\$1 < b < 36\$), return the number of digits/length of \$n\$ in base \$b\$
...
- 133
33
votes
52
answers
3k
views
Split a list at the second occurrence of the first element
Why should you golf in Haskell? Find out here. In that answer, Zgarb defines a task:
Let's define a function f that splits a list at the second occurrence of the ...
- 49.9k
12
votes
5
answers
369
views
Tips for restricted source in zsh
Adapted from tips for restricted-source in Python
Just like code-golf, restricted-source pushes one to exploit quirks and hidden features of the zsh language. While we already have a place to collect ...
- 23.7k
33
votes
17
answers
6k
views
Is it a lobster number?
Introduction
A "lobster number", by my own designation, is a number that contains within itself all of its prime factors. The "lobster" description was inspired by the recent ...
- 439
120
votes
19
answers
64k
views
"Hello, World!" in zero lines of code
NPM's sloc is a moderately popular tool for counting source lines of code in a file. The tool will attempt to strip out both single and multiline comments and count the remaining lines in order to get ...
- 14.8k
46
votes
15
answers
3k
views
Tips for Creating/Maintaining a Golfing Language
Creating a golfing language can be hard. Let's help budding golfing language creators out and provide some helpful tips on how to create one.
I'm looking for tips on:
The design process
...
- 33.3k
16
votes
20
answers
2k
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Produce a List of Rotonyms 1
Rotonyms 1
ROT13 ("rotate by 13 places") is a simple letter substitution cipher that replaces a letter with the 13th letter after it, in the alphabet. So, A ...
- 897
18
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15
answers
2k
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73
votes
211
answers
18k
views
The Programming Language Quiz, Mark II - Cops
A repost of this challenge. Meta discussion. Sandbox post. Body of the question similar to the original
Robber's challenge
This cops and robbers is now (08/03/2018) closed to further competing cop ...
- 49.9k
22
votes
12
answers
3k
views
Is it a substring of itself?
Given a string, return whether the string is a substring of the program's source code.
Standard quine rules apply, meaning you cannot read your own source code. The length of the input is guaranteed ...
- 49.9k
18
votes
22
answers
1k
views
Output diagonal positions of me squared
Given a number n, Output an ordered list of 1-based indices falling on either of the diagonals of an n*n square matrix.
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- 3,396
19
votes
14
answers
2k
views
Seeking Secret Swapping Sequences
This is a cops-and-robbers challenge, the robbers thread can be found here.
Your task is to write some code that outputs an OEIS sequence, and contains the name of the sequence in the code (...
- 98.5k
28
votes
8
answers
4k
views
Err, Where am I?
Oh no! I'm trapped in a big forest (Okay, not really, but just assume it) and I don't know where I am!
Thankfully, I brought my laptop. But when I searched 'Maps', It said 'No results', and I'm ...
- 5,347
23
votes
14
answers
3k
views
Make a Bubble-wrap simulator
Bubble-wraps are maximum-level entertainment. Everyone can agree to that.
Now, you will make even computers enjoy bubble-wraps.
Specs
You will be given two integers, w, and h.(each are responsively ...
- 5,347
17
votes
10
answers
1k
views
Sign change, loop and display with minimal padding
Input:
Two integers: one negative, one positive.
Output:
On the first line output lowest to highest. On the second line we've removed the highest and lowest numbers and sign-changed all individual ...
- 126k
19
votes
29
answers
3k
views
Do Matrix Multiplication!
In mathematics, matrix multiplication or the matrix product is a binary operation that produces a matrix from two matrices. The definition is motivated by linear equations and linear transformations ...
- 10.6k
49
votes
67
answers
6k
views
Depalindromize this string!
Given a palindrome generated according to this challenge, depalindromize it.
Test cases
...
- 10.6k
165
votes
128
answers
33k
views
Trick or Treat polyglot
Since Halloween is coming up I thought I might start a fun little code golf challenge!
The challenge is quite simple. You have to write a program that outputs either ...
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26
votes
51
answers
2k
views
64
votes
153
answers
13k
views
Draw an asterisk triangle
Inspired by a task for Programming 101, here's a challenge that hopefully isn't too easy (or a duplicate).
Input:
A positive integer n >= 1.
Output:
...
- 1,205
28
votes
29
answers
3k
views
Let's do the Wave!
Input:
A string (the wave-snippet) with a length >= 2.
A positive integer n >= 1.
Output:
We output a single-line wave. ...
- 126k
24
votes
23
answers
5k
views
How many times will a bell tower ring?
Introduction
A bell tower will ring its bells every hour, n times, with n being the the current hour on a 12 hour clock.
For ...
- 2,491
6
votes
13
answers
3k
views
0.0000000000000000001
Notice the pattern in the below sequence:
0.1, 0.01, 0.001, 0.0001, 0.00001 and so on, until reaching 0.{one hundred zeros}1
Then, continued:
...
- 1,769
88
votes
28
answers
8k
views
Bake a slice of Pi
Write a program or function that prints or outputs this exact text (consisting of 142 characters):
...
- 3,910
67
votes
165
answers
10k
views
Print all integers
Write a program or function which will provably print all integers exactly once given infinite time and memory.
Possible outputs could be:
...
- 38.7k
32
votes
23
answers
16k
views
Draw an Empty Scrabble Board
A standard Scrabble board is a 15×15 grid of spaces to place letter tiles. Most of the spaces are blank but some are double word scores (pink), triple word scores (red), double letter scores (...
- 89.7k
85
votes
218
answers
23k
views
The Letter A without A
Your task is to display the letter "A" alone, without anything else, except any form of trailing newlines if you cannot avoid them, doing so in a program and/or snippet. Code that returns (instead of ...
- 1,769
30
votes
72
answers
3k
views
A square of text
The Challenge
Given a string, output the text in the shape of a square.
You can assume that the text will always fit in a square, and that it will never be an empty string.
You can also assume it ...
- 3,888
121
votes
409
answers
30k
views
Print a 10 by 10 grid of asterisks
Background
This is a standard textbook example to demonstrate for loops.
This is one of the first programs I learnt when I started learning programming ~10 years ago.
Task
You are to print this exact ...
- 49.7k
46
votes
11
answers
2k
views
Run Stackylogic
Stackylogic is a logic-based programming language I made up that take in 0's and 1's for input and outputs a single ...
- 89.7k
67
votes
235
answers
18k
views
Add two numbers
Input: Two integers. Preferably decimal integers, but other forms of numbers can be used. These can be given to the code in standard input, as arguments to the program or function, or as a list.
...
- 6,376
80
votes
94
answers
18k
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Golf all the 16 logic gates with 2 inputs and 1 output!
For example, the gate A and B is a logic gate with 2 inputs and 1 output.
There are exactly 16 of them, because:
each logic gate takes two inputs, which can be ...
- 49.7k
19
votes
13
answers
829
views
Tips for golfing in dc
What general tips do you have for golfing in dc?
dc is a calculator utility for UNIX/Linux that predates the C language. I am interested in how to make my dc programs (calculations?) shorter. I'm ...
- 393
31
votes
27
answers
3k
views
Palindromizing the strings
Introduction
For the ones who don't know, a palindrome is when a string is equal to the string backwards (with exception to interpunction, spaces, etc.). An example of a palindrome is:
...
- 44.4k
19
votes
8
answers
1k
views
Hilbert-Curvify a Matrix
Inspired by this question
Another way to unroll a 2D image into a 1D string is to use an Hilbert Curve.
There are many version of this curve, depending on the number of iterations used while ...
- 963
20
votes
18
answers
756
views
Tips for golfing in Factor
What general tips do you have for golfing in Factor? I'm looking for ideas that can be applied to code golf problems in general that are at least somewhat specific to Factor (e.g. "remove comments" is ...
- 5,879
58
votes
25
answers
16k
views
Tips for golfing in Jelly
Jelly is a tacit, golf-oriented programming language by our very own Dennis. It’s popping up in answers here more and more often, beating other golf-y languages like Pyth and CJam, both by using its ...
- 68.7k
19
votes
5
answers
689
views
Reverse-Engineer the N-Bonacci sequence[s]
EDIT: I will be accepting an answer Monday, 2/15/2016. May the bytes be ever in your favor!
In his "Print the N-Bonacci Sequence" challenge, @DJMcGoathem describes the N-bonacci sequences, wherein ...
- 3,331
47
votes
28
answers
5k
views
Remove every N-th N
The task
In this challenge, your input is a non-empty list of positive integers, given in the native format of your language.
Your output is that same list, in the same format, with some elements ...
- 42.6k
192
votes
180
answers
20k
views
What is the smallest positive base 10 integer that can be printed by a program shorter (in characters) than itself?
I think the question as above is clear, but just in case:
Write a full program (not just a function) which prints a positive base 10 integer, optionally followed by a single newline.
Qualifying ...
- 1,947
73
votes
84
answers
6k
views
No strings (or numbers) attached
If you like this, consider participating in:
The Official Dyalog APL 2016 Year Game
The monthly Dyalog APL 2017 Code Golf Challenge
Make 12 snippets/expressions, in the same language, that result in ...
- 30.2k
12
votes
13
answers
1k
views
Iterated Dice Rolling
Given an input n where 3 <= n <= 25, perform the following steps, starting with a single ...
user45941
86
votes
225
answers
16k
views
Count up forever
Write a program that counts up forever, starting from one.
Rules:
Your program must log to STDOUT or an acceptable alternative, if ...
- 2,499
172
votes
494
answers
35k
views
Implement a Truth-Machine
A truth-machine (credits goes to this guy for coming up with it) is a very simple program designed to demonstrate the I/O and control flow of a language. Here's what a truth-machine does:
Gets a ...
- 11.2k
112
votes
330
answers
22k
views
Simple cat program
One of the most common standard tasks (especially when showcasing esoteric programming languages) is to implement a "cat program": read all of STDIN and print it to STDOUT. While this is named after ...
- 197k
97
votes
15
answers
11k
views
Create a programming language that only appears to be unusable
Robbers' challenge thread is here.
Cops' challenge: Design a programming language that appears to be unusable for programming, but admits computation (or at least completion of the task) through some ...
- 31.4k
220
votes
89
answers
39k
views
Make your language unusable
Try to write some code in your language and make it not satisfying our criteria of being a programming language any more.
A language satisfies our criteria (simplified version for this challenge) of ...
- 37k
4
votes
89
answers
4k
views
Summation from a to b
The program has an input of a and b, and outputs the sum of numbers from a to b, inclusive. Score is in bytes. As always, standard loopholes are disallowed.
If your input is in the format [a,b], +3 ...
user45510
103
votes
300
answers
18k
views
Create output twice the length of the code
The Challenge
Write a complete program that writes twice as many bytes to standard output as the length of the program.
Rules
The program must write ASCII characters to the standard output.
The ...
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