Questions tagged [code-golf]
Code-golf is a competition to solve a particular problem in the fewest bytes of source code.
44
questions with no upvoted or accepted answers
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1k views
Complement a POSIX Extended Regular Expression
Given a POSIX Extended Regular Expression as input, output its complement (also a POSIX ERE). If the given regular expression matches a string, its complement should not match it, and the regex: ...
21
votes
0answers
744 views
Totally Cubular
Create a program or function to unjumble a 9x9x9 cube of digits by rotating individual 3x3 cubes within it.
This is similar to (but, I suspect, a bit harder than) my Flippin' Squares question.
Input
...
17
votes
0answers
318 views
Compare Dowker Knotation
Dowker notation is a common way of representing mathematical knots.
Dowker notation can be derived from a knot diagram in the following way (based on the description from the wikipedium):
We will ...
16
votes
0answers
278 views
Fix Brain-Flak push-pop redundancy
Brain-Flak is a stack-based esoteric language with eight commands:
...
12
votes
0answers
616 views
Please parse this aLL1en language
Background
Due to some unfortunate accident during coding you are now teleported and stranded on an alien planet. You really hope that the locals will be helpful and point to the general direction of ...
11
votes
0answers
302 views
Tips for Golfing in SQLite?
I was looking for this page to help me enhance my first answer with SQLite, but I couldnt find one. So here we are!
What general tips do you have for golfing in SQLite? I'm looking for ideas that can ...
11
votes
0answers
848 views
Find a Glider Synthesis (Game of Life)
Challenge Summary
In summary, the challenge is to provide the glider synthesis for a Game of Life configuration, which is your input.
What does this mean?
Well, firstly, let me explain a few terms. ...
11
votes
0answers
483 views
Simulate a Game of Quagmire
Background
Many moons ago, in a galaxy much like our own, a young BrainSteel attempted to invent a board game. He believed that he, too, could find an amazingly simple set of rules that would generate ...
10
votes
0answers
501 views
Finding Radical Ideals
Sandbox
Finding radicals of arbitrary ideals in rings is hard! However, it's a doable task in polynomial rings, since they are Noetherian (all ideals are finitely generated)
Background
A quick ...
10
votes
0answers
386 views
The knight's next tour
We've all heard of the Knight's Tour puzzle: find a route for a knight that passes through all the squares on a chess board. But let's be honest, it's a little bit boring. So, let's give the knight a ...
10
votes
0answers
593 views
Up 12 at 4 it's
Introduction
On BBC Radio 2, on Saturdays there's a show hosted by Tony Blackburn called Pick of the Pops. Here, Tony selects a random week from a random year (in the range 1960-1989), and plays the ...
10
votes
0answers
506 views
mini SPICE solver
SPICE is an electrical circuit simulation program originating from UC Berkeley. Your goal is to implement a minimalistic version which can solve for the nodal voltages and branch currents of a circuit ...
9
votes
0answers
370 views
Don't break the bridges!
Introduction:
You are a worker, who is in charge of managing a set of bridges, connecting a square grid of "nodes":
...
9
votes
0answers
583 views
Printing the Cracker Barrel Game
Revised formatting and instructions
Given a list of moves for a Cracker Barrel peg board game, or as @Steveverrill stated, Peg Triangle Solitaire:
...
9
votes
0answers
477 views
Chaining autograms
Write a program that takes one integer input n and one format letter and outputs n autograms in the format This sentence contains ? "A"s, ? "B"s ... and ? "Z"s.
...
8
votes
0answers
154 views
Cover positions with snakes of same 'colour'
Imagine a grid where the origin square \$(0,0)\$ is at the top left of the screen, and positive \$x\$ is rightwards whereas positive \$y\$ is downwards. Coloured squares are at various positions on ...
8
votes
0answers
317 views
Code Golf: BlackJack - best moves
The Challenge
I was looking into small code examples for a specific language as a small tutorial and came accross a simplified Blackjack that should be implemented. In this Challenge you will have to ...
8
votes
0answers
698 views
Find a dual graph
A dual graph is defined such that for every "face" in a graph G, there is a corresponding vertex in the dual graph, and for every edge on the graph ...
8
votes
0answers
714 views
Generate Loopy puzzles
Loopy is a puzzle game from the collection of Simon Tatham. The previous link contains a javascript implementation of a Loopy puzzle generator. I suggest everybody who wants to attempt this challenge ...
8
votes
0answers
1k views
Simple chess bot
Inspired by this
Implement simple chess bot (with console or GUI) that has following features:
[Pseudo-]graphically showing the board;
Accepting user moves and making their own moves;
Playing by ...
7
votes
0answers
329 views
Radiation is Painful
A radiation-hardened quine can take a hit and stay standing, but nobody ever said that the quine can't be a wuss about it.
For this challenge, you should write a quine that:
If no characters are ...
7
votes
0answers
405 views
Get ERC-20 token balance
Ethereum is a blockchain platform. It has its own native cryptocurrency, ether, but in this challenge, we'll be focusing on its ability to run smart contracts.
The ERC-20 standard describes an ...
7
votes
0answers
216 views
Find the smallest triangle encompassing the specified polygon
Input: An integer N which represents the polygon's vertices and a list of their x and y coordinates.
Expected output: The smallest difference possible between the area of the(not necessarily convex) ...
7
votes
0answers
331 views
Declare a Code Golf Winner
Normally, I'd open with some flavor text here about being bored and/or lazy but looking through the stack-exchange-api questions that would be far from original. So instead I'm going to open with a ...
7
votes
0answers
155 views
Tips for golfing in Subleq
Subleq is a programming language with only one instruction. Each instruction contains 3 parameters. Code and data space is the same. How it works:
A B C
A, B and ...
7
votes
0answers
169 views
Implement FBLint
(FB, or Functional-Basic, as found here Interpret Functional-Basic)
Task
Implement a linting program for FB, similar to JSLint for JavaScript.
Error types
Invalid identifier
Identifiers can only ...
7
votes
0answers
279 views
Generate net puzzles
An acyclical grid is a mapping of an acyclical graph (that is, a tree) where each node has no more than four edges onto a toroidal rectangular grid such that each cell of the grid is occupied by a ...
5
votes
0answers
317 views
Tetris overlooked move counter
Playing tetris is fun. Watching an AI play tetris is also fun.
Some tetris AIs will always ignore the possibility of maneuvering a piece under an overhang, which makes me sad.
It means that the ...
5
votes
0answers
200 views
Decompose the domain
In scientific computing, it is often desirable to decompose some large domain into smaller "subdomains", then parallelize the computation by performing the work on each subdomain in parallel and the ...
5
votes
0answers
262 views
Code Golf Pro Golfer Least Swings Calculator
Your Challenge:
For a golf Course Of Inputted 'n' length to hole where:
...
5
votes
0answers
637 views
Chess Light Solver
Challenge
Write a solver for the Chess Light puzzle game, in the smallest amount of code.
The input will be a representation of a chessboard, how in yours is up to you. My examples below is textual, ...
4
votes
0answers
252 views
SELECT ALL FROM SelectQL WHERE (answer=“short” OR NOT length=10000)
I've invented an SQL-like language. Let's call it SelectQL. You can't INSERT anything, you can only SELECT, and I don't have the ...
4
votes
0answers
261 views
Count the length of head movement
Once upon a time I wanted to order custom tokens for a board game. They say they can do it, and then they present me their price list. I was confused because they charge per inch of head movement, and ...
4
votes
0answers
304 views
Another version of “The Bridge and Torch Problem”
The idea for this code golf puzzle is from link: The Bridge and Torch Problem
The inspiration for this code golf puzzle is the Bridge and Torch
problem, in which d people at the start of a bridge ...
4
votes
0answers
169 views
Simulate Alpha Decay
Alpha Decay is a kind of radiation decay where every time the atom "decays", it loses a helium nucleus (an alpha particle). This means that an atom loses 2 protons and 2 neutrons each time. ...
4
votes
0answers
213 views
Golfing Delayed Expansion Variables in Batch
Enabling delayed expansion variables in Batch chews up a lot of bytes. The shortest I have managed to make it is:
@!! 2>nul||cmd/q/v/c%0&&exit/b
...
3
votes
0answers
161 views
Simulate the isotropic non-totalistic cellular automaton
There are many generalizations of Conway's Game of Life. One of them is the isotropic non-totalistic rulespace, in which the state of a cell in the next generation depends not just on its state and ...
3
votes
0answers
164 views
Construct the suffix automaton
In computer science, a suffix automaton is the smallest partial deterministic finite automaton that recognizes the set of suffixes of a given string. (Wikipedia)
Given a string \$S\$ consisting of ...
3
votes
0answers
260 views
Rope&Nail logic
Related, both rope, nail and falling, but reversed and some other differences
Consider a loop of rope hanging on n nails on a row. Given a table showing whether ...
3
votes
0answers
235 views
2017 SCRAM Finder
Background
The nuclear industry has term, SCRAM, used to describe a quick shutdown of the reactor. There's a fun myth that it stands for "Safety Control Rod Ax Man," the role which served ...
3
votes
0answers
139 views
Tips for golfing in SageMath
SageMath is an open-source mathematics software system, built on Python 2. Its extensive math library support makes it a strong choice for golfing in math-based challenges.
What tips do you have for ...
3
votes
0answers
362 views
Create a World Cup overview
I'm not to sure about the title so feel free to suggest a better one.
Task/challenge
Create an overview for the World Cup tracking the cup from the group phase till the finals.
Group phase
There ...
2
votes
0answers
325 views
Find the pattern
I feel tired to do "find the pattern" exercise such as
1 2 3 4 (5)
1 2 4 8 (16)
1 2 3 5 8 (13)
Please write a program that finds the pattern for me.
Here, we ...
1
vote
0answers
159 views
Mixed fractions without delimiters
Help! I printed a bunch of rational numbers with no spaces or other delimiters other than the / in the fractions. There is, however, good news! All the numbers are ...
