Questions tagged [code-golf]
Code-golf is a competition to solve a particular problem in the fewest bytes of source code.
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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. ...
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Lean golf: Balanced Bracket Sequence
Ungolfed, ugly, horrible proof to help you make progress on this challenge: https://gist.github.com/huynhtrankhanh/dff7036a45073735305caedc891dedf2
A bracket sequence is a string that consists of the ...
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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 ...
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Optimize for Bgil Midol's slicing scoring
In Bgil Midol's question, the score of a sequence of slice is defined as
sumof|startslices|∗2+sumof|endslices|∗2+sumof|stepslices|∗3
Such scoring method makes multiple slices possibly take less ...
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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 ...
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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 ...
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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. ...
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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 ...
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NP-complete reduction: (grid-)Hamiltonian circuit
Background
Hamiltonian circuit problem is a decision problem which asks whether a given graph has a Hamiltonian circuit, i.e. a cycle that visits every vertex exactly once. This problem is one of the ...
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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 ...
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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 ...
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Tips for golfing in Chef
What general tips do you have for golfing in Chef? I'm looking for ideas which can be applied to code-golf problems and which are also at least somewhat specific to Chef (e.g. "remove unnecessary ...
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Jelly compression quine
The golfing language Jelly has a very complex and clever string compression system which I'm not going to go into depth about here. You can find a very good explanation here.
Basically, Jelly's string ...
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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.
...
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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 ...
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Yet another digit insertion problem
Given a positive number \$n\$ we call another (not same as n) positive number \$m\$ good if we insert same digits in both n and m and the resulting fractional value is same.
$$m/n = m_{\text{...
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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 ...
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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) ...
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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 ...
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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 ...
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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 ...
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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 ...
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Heart Point Generator
It's mentioned last time that, in Hearts,
Each round every player gets a non-negative amount of points. The sum of the points is 26, and at least one player gets 13 or more points.
Actually, it's ...
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Further golfing this C# code from Scramble words while preserving their outlines
I'll start off by saying I checked and checked again that this question should be on topic.
I will also clearly state that this is a tips question about further golfing a certain set of code not a ...
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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, ...
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Convert To Shorthand Part 2
Part 1 of the challenge revolved around converting the letters into specific unicode characters.
Lore
In this part we receive the output from the function made in Part 1, which now has to be arranged ...
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Tips for golfing in Objective C
Surprisingly, I do not think this question has been asked before
Although on codingame.com, Objective C and C are two of the best golfing languages there, so I would like to know some of the best ...
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Tips for Golfing the Lambda Calculus & Friends
This includes tips for all related derivatives, as coding in these langs often primarily consists of writing the function in the lambda calculus and then compiling it down at the end.
Among others, ...
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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 ...
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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 ...
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Code Golf Pro Golfer Least Swings Calculator
Your Challenge:
For a golf Course Of Inputted 'n' length to hole where:
...
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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
...
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Tips for golfing in Seriously
I am looking for tips to code in this golfing language Seriously, and was wondering what some of the ways for golfing this language is. "Remove comments" is not a tip. Actually is also ...
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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 ...
user45941
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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 ...
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Tips for golfing in Fennel
Fennel is a lispy language which compiles to Lua.
From its page:
Fennel is a programming language that brings together the speed, simplicity, and reach of Lua with the flexibility of a lisp syntax ...
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Bracket Depth List
Challenge
Your challenge is simple, calculate the depth of each matching brackets in the given input e.g. (()()(()))->...
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Smallest OCI Container That Handles PID 1 Signals Correctly
Introduction
There have been a few examples of the smallest possible OCI container that does "X". However these examples never correctly handle termination signals.
Challenge
Produce the ...
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Conic Sections (simplified)
Given the equation of a non-parabolic conic section, output its characteristics.
Spec
Some info on conic sections:
for more info visit Wikipedia
From an equation of the form \$ax^2+bx+cy^2+dy+E=0\$, ...
user100690
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FreeCell stack moving
This question is about moving stacks around in the card game FreeCell, but here it will be presented more abstractly.
Given three integers \$0\le n,m<10000,0<k<10000\$.
There are \$m+2\$ ...
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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 ...
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Compare array of decimal sum of Integers and exact fractional part
Develop a program which takes two arrays of decimal numbers, and compare the sum of whole numbers only and the decimal part. If the sums of the whole numbers are the same, and the decimal parts of ...
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