Questions tagged [kolmogorov-complexity]
Kolmogorov complexity, informally, is the amount of code it takes to describe or produce a constant object, such as a string or image. When posting a challenge in this category, please make sure it adds something new to existing challenges.
627
questions
22
votes
3answers
623 views
Draw an ASCII key signature
Given an input of a note, output an ASCII drawing of the corresponding major
key on the treble clef.
Here are all the major keys (that don't include double-sharps or double-flats)
and their ...
19
votes
17answers
2k views
Mirrored Digital Clock
Many digital clocks display the time using simplified digits comprised of only seven different lights that are either on or off:
When mirrored horizontally, the digits ...
42
votes
81answers
4k views
A very long Terza Rima
Description
Output the rhyme scheme for a very long Terza Rima.
Input
None.
Output
...
17
votes
97answers
5k views
Output the language name times the number of characters [closed]
Challenge:
Your task is to use any language to output that language's name times the number of character's in its name.
Use the common name or acronym of the language.
If there are
multiple versions ...
21
votes
11answers
2k views
Unicode Fractions
Given a fraction in the format m/n (where m and n are coprime integers), output the corresponding Unicode fraction. Your program/function will not be expected to ...
17
votes
7answers
2k views
Electron Configuration
In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom in atomic orbitals. For example, the electron configuration of the neon atom is 1s2 2s2 ...
13
votes
21answers
2k views
Iterated phi sequence
Related: Iterated phi(n) function.
Your challenge is to compute the iterated phi function:
f(n) = number of iterations of φ for n to reach 1.
Where ...
20
votes
11answers
2k views
Print me a scale
Oh no! I have a theory test soon and I don't remember the scales yet! Help me remember my major scales by printing the following:
...
8
votes
14answers
3k views
Coffee Machine Machine
You left your computer for too long, and it went to sleep. Wake it up again by printing the following coffee maker.
...
13
votes
24answers
2k views
Scoop me an icecream please
Make me an icecream cone please
We have a ton of great ice cream places here in New England. Most of them are closed for the winter now, so...
...
0
votes
4answers
464 views
The thousand character classic
Background
The Thousand Character Classic is a chinese poem written around the 4th Century CE in China, and memorized by large populations since then. The name comes from not only its length, but its ...
11
votes
18answers
1k views
Reversed Engineered from Uniqueness (Robber's Thread)
Given the output of the cop's program (o), the byte-count (n) and the number of unique bytes (...
31
votes
97answers
5k views
Alphabet Staircase
The Challenge
Your task is to create a program or function that outputs the following with no input:
...
7
votes
5answers
479 views
Demonstrate a lower bound for the Ramsey number R(4,4)
A special case of Ramsey's theorem says the following: whenever we color the edges of the complete graph on 18 vertices red and blue, there is a monochromatic clique of size 4.
In language that ...
-2
votes
23answers
490 views
8 8's make 1000
Print the following output of a happy coincidence addition pattern:
8
8
8
88
+888
----
1000
Rules:
No leading spaces except the ones already present
...
54
votes
23answers
8k views
Confirm the Illuminati
The Illuminati commands you (with their mind control) to output the following string:
...
76
votes
29answers
3k views
4
votes
17answers
405 views
Any digital permutation
Task
Your task is to output a single integer, with one restriction: its digits must be a permutation of [1, 2, 2, 3, 3, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6].
For example, you could output 653443653152432, ...
14
votes
25answers
2k views
Hopping numbers
TASK
print integers n, where 12 <= n <= 123456789, and all pairs of consecutive digits in n have the same positive difference between them (e.g. 2468 but not ...
49
votes
57answers
6k views
There are known knowns
Former US Secretary of Defense, Donald Rumsfeld, famously popularized the phrase "known knowns." Here we're going to distill his remarks into a four-line stanza.
Specifically, output this text:
<...
19
votes
9answers
2k views
How many chapters do I have?
The Bible is one of the most influential books ever written, and commonly cited as the best selling book of all time. It was written by approximately 40 different authors over hundreds of years before ...
20
votes
22answers
2k views
Build a checkerboard
For this challenge you will print the coordinates and color of each piece at the start of a game of checkers.
Enter the x and y (comma seperated) for every square (indexed 0-7) on a checkerboard, ...
23
votes
8answers
1k views
Casciitum Scribe
Introduction
Cacti come in various different sizes, shapes and colors. However, the most iconic cactus and must-have in every Western has to be the saguaro. Important features are its size and arms, ...
30
votes
14answers
3k views
Generate TeX to typeset Sierpinski Triangle Fractal
Challenge
Write code that outputs TeX (LaTeX) math-equation code (given below) that will typeset Sierpinski Triangle Fractal of 5 levels. Shortest code wins.
Details
TeX (and friends like LaTeX, ...
17
votes
23answers
2k views
40
votes
23answers
3k views
Output the Trinity Hall Prime
Based on this Math.SE question; number copied from this answer. Number originally from a Numberphile video, of course.
Your task is to output the following 1350-digit prime number:
...
71
votes
114answers
8k views
Make an alphabet searchlight!
Inspired by a bug in a solution to this challenge, your challenge is to produce this exact text:
...
4
votes
9answers
504 views
There's no place like home
I recently watched The Wizard Of Oz and thought that when Dorothy taps her shoes together three times, it would be easier if she used a program to do it. So let's help her.
Task
Output slippers ...
38
votes
28answers
10k views
When do I get my sandwich?
Given one of the following inputs: Sweet Onion Chicken Teriyaki
Oven Roasted Chicken
Turkey Breast
Italian BMT
Tuna
Black Forest Ham
Meatball Marinara output a number from 1-7 (or 0-6) representing ...
26
votes
34answers
3k views
Euro coins and notes
As the majority of nations using the Euro have the , as the decimal separator, you must use it also.
The task is to output all the values of the Euro coins and ...
7
votes
4answers
533 views
1326 starting hold'em combos
The goal is to get all combinations of hold'em starting hands (every two card combination) in the shortest amount of code.
A hold'em hand is two distinct cards dealt from a standard deck of 52 cards, ...
1
vote
1answer
136 views
28
votes
28answers
3k views
13
votes
18answers
42k views
Walkers Join! - Alan Walker's logo
You might know Alan Walker from his ever popular song Faded. Now his "followers" are called Walkers and they have a logo, here is a simplified version:
...
-7
votes
19answers
377 views
Code Golf - Covfefe on tap
As we all know, negative press covfefe has been conspiring to bring down the American president for some months now.
There's also, definitely, an algorithm in play in that word. Covfe is a refreshing ...
14
votes
5answers
2k views
Fallout Terminal Hacking
Anyone here a die-hard Bethesda fan? Maybe you prefer Obsidian Entertainment? Well, if you're either of those things than the following picture should be relatively familiar to you.
I've taken the ...
5
votes
6answers
301 views
Champernowne up to me [duplicate]
Inspired by this question.
Champernowne's constant is an infinite decimal number that consists of "0." followed by all natural numbers concatenated together. It begins like so: ...
47
votes
50answers
13k views
Draw the Swiss Flag
Task: Output the Swiss flag.
Happy Swiss National Day / Schweizer Bundesfeiertag / Fête nationale suisse / Festa nazionale svizzera / Fiasta naziunala svizra!
Details:
The flag consists of a white ...
14
votes
12answers
1k views
A-Z in 10's, you see?
As a follow up to my previous challenge Count to 20 with Words!, we will once again be using the word list from that challenge to perform another task. This time, you will be exclusively using:
https:/...
13
votes
22answers
754 views
Output Rhombus Sequence without Nested Loops [duplicate]
The following is the rhombus sequence.
1
121
12321
1234321
123454321
12345654321
1234567654321
123456787654321
12345678987654321
Your task is to output this, ...
-2
votes
11answers
647 views
Map of India - minimum number of bytes
Your challenge is to make a program(less number of bytes than what the below program takes) that should print the map of India with any special character of choice.
TIO Link
...
24
votes
9answers
2k views
8
votes
3answers
617 views
Secret Message Part 1, Elements
You and your friend want to send each other secret messages. However, because you are conspiracy theorists and think that the government has a quantum computer that can crack any standard encryption. ...
49
votes
13answers
7k views
Extreme Fibonacci
There have been a billion iterations of Fibonacci challenges on this website, so lets spice things up with a Fibonacci challenge of a billion iterations!
Your challenge is to output the first 1000 ...
38
votes
15answers
4k views
Count to 20 with Words!
Using the following length-separated lists of words:
https://github.com/Magic Octopus Urn/wordListsByLength
Print 1 word from each list of length n from 1 all the ...
24
votes
22answers
5k views
The answer to life, the universe, and ASCII-art
Simple challenge: try to output the following text in as few bytes as you can:
...
6
votes
7answers
258 views
Duplicate the KOOS Jr. Scoring interval algorithm
Inspired from a real problem; we were looking at this table and said "Hey, now that's a good codegolf problem."
The KOOS Jr. scores converts from a raw number to a percentile score given this table:
...
30
votes
14answers
3k views
Put together a Senate majority
There are one hundred members of the United States Senate. Assuming that nobody filibusters and that the Vice President isn't cooperating, at least fifty-one members are necessary to pass a bill. But ...
11
votes
5answers
622 views
Computers will never taste a refreshing cookie
Inspired by github.com/JackToaster/Reassuring-Parable-Generator, in turn inspired by xkcd.com/1263. The possible words are derived from the reassuring.cfg of that repository.
Having a look at the ...
19
votes
27answers
2k views
Not too hard to code this right?
You have to write a program or a function in any language that outputs this pattern:
...
