-🎄- 2021 Day 20 Solutions -🎄-

• adventofcode

  23 3 0.0 Elixir

  Advent of Code challenge solutions (by flwyd)

  Raku and Go 10828/10559 (because I spent about 40 hours thinking that 3D rotation is commutative across axes, until I did a second round of experimenting with a Rubik's cube). The Raku solution runs in about 41 minutes, the Go solution runs in about 41 seconds.

• aoc2021

  1 15 0.0 Python

  Advent of Code 2021 (Elixir + Pygame) (by p88h)

  Elixir 3 ms / 1.3 sec

• Revelo Payroll

  try.revelo.com

  sponsored

  Free Global Payroll designed for tech teams. Building a great tech team takes more than a paycheck. Zero payroll costs, get AI-driven insights to retain best talent, and delight them with amazing local benefits. 100% free and compliant.

  

• advent-of-code

  5 18 0.0 Rust

  Compile for your CPU. By default rustc compiles for a generic CPU (i.e. a very very old x64), so the compiler does not use all the features availabl ein modern processors. Just add this in your project and you'll get several % improvement.

• aoc

  4 1 0.0 Raku

  Advent of Code - mscha's Perl 6 solutions (by mscha)

  The rest is the same as my first attempt, but full code at GitHub.

• advent-of-code

  15 20 0.0 Python

  Advent of Code (by morgoth1145)

  Python3 64/44

• Advent-of-Code

  4 4 0.0 Rust

  A repository holding all of my solutions to Advent of Code problems (by Noble-Mushtak)

  Python 3.8.10 82/68

• AdventOfCode

  11 196 0.0 Python

  My Advent of Code solutions. I also upload videos of my solves: https://www.youtube.com/channel/UCuWLIm0l4sDpEe28t41WITA (by jonathanpaulson)

  135/99. Python. Video coming soon.

• Onboard AI

  getonboard.dev

  sponsored

  Learn any GitHub repo in 59 seconds. Onboard AI learns any GitHub repo in minutes and lets you chat with it to locate functionality, understand different parts, and generate new code. Use it for free at www.getonboard.dev.

  

• advent-of-code-2021

  0 0 0.0 Rust

  RUST

• advent-of-code

  19 9 0.0 JavaScript

  Advent of Code solutions in JS (by leyanlo)

• adventofcode

  2 4 0.0 Java

  My solutions for Advent of Code (by fireduck64)

• advent_2021

  0 0 0.0 Python

  Python using numba for speed, so part 2 runs in about 200 ms. Kind of nasty that the example code didn't flash...

• AdventOfCode_2021

  0 1 0.0 Rust

  Repository for Advent of Code 2021 solutions (by galenelias)

  Code

• aoc2021

  0 0 5.1 Clojure

  Advent of Code 2021 solutions in Clojure and Python (by tabidots)

  Clojure (Github). Part 2 runs in ~4.2s (didn't try to optimize anything, if there is even anything to optimize).

• AdventOfCode2021

  0 2 4.1 Python

  Pidgin Python... didn't get the trick filler value in the first place, nasty little Hobbits :( https://github.com/Myxcil/AdventOfCode2021/blob/main/Day20/day20_main.py

• deno_aoc

  0 5 0.0 TypeScript

  🎄 Advent of code solutions written in TypeScript for Deno.

• advent_of_code

  5 3 0.0 Perl

• advent-of-code-2021

  0 1 0.0 Python

  My solutions for Advent of Code 2021: https://adventofcode.com/2021 (by BradonZhang)

  Python 2295/2001 - GitHub

• AdventOfCode-Java

  11 43 0.0 Java

  adventOfCode(Language.JAVA);

• aoc-2021-python

  0 0 0.0 Python

  my Python solutions for Advent of Code 2021!

  Kudos! I tried to do the exact same thing in Python, but I was much slower even with the help of the standard library's functools.cache. (Python, 1680/1482.)

• AdventOfCode2021

  0 0 0.0 C#

• adventofcode

  221 59 0.0 Scala

  Advent of Code solutions of 2015, 2016, 2017, 2018, 2019, 2020, 2021 and 2022 in Scala (by sim642)

  My Scala solution.

• Advent_of_Code2021

  0 1 0.0 R

  Solutions to Advent of COde 2021 (by cettt)

  Today was quite easy again. The only challenging part in my input was that light pixels surrounded by only light pixels turn dark (and vice versa). github

• Advent

  0 2 0.0 C#

  AdventOfCode (by genveir)

  C#

• AoC2021

  0 0 0.0 Python

• advent2021

  0 0 0.0 Java

  Advent of Code 2021 (by arjanIng)

• AdventOfCode

  2 1 0.0 C#

  C# solution (cleaned up)

• AoC

  0 0 0.0 C++

  AoC by me (by Alenlov)

  Python

• aoc

  1 3 0.0 Rust

  rust part 1 and 2, since only number of steps were different

• adventofcode

  7 16 0.0 JavaScript

  ES6 solutions to Advent of Code puzzles. (by surgi1)

  both parts (a bit ugly brute force in the "let's expand the range into oblivion until it works" parts)

• aoc_kotlin

  2 0 0.0 Kotlin

  Advent of code solutions in Kotlin

  Kotlin 1948/1806

• AOC

  0 0 0.0 Kotlin

  Advent of code (by cascer1)

  github link

• AdventOfCodeCSharp

  11 5 0.0 C#

  My AoC Solutions

  C#

• AdventOfCode

  0 0 0.0 Python

  Python

• advent-of-code

  0 1 0.0 Common Lisp

  Python.

• advent-of-code-2021

  0 0 5.1 Rust

  Code I used for solving https://adventofcode.com/2021 (by pavel1269)

• adventofcode-21

  0 0 3.6 Elixir

  Elixir

• advent-of-code

  0 2 0.0 Ruby

  My solutions for advent of code (by klaustopher)

  Ruby

• advent-of-code-2021

  1 1 0.0 Common Lisp

  In Common Lisp (by brunal)

• advent-of-code

  20 21 0.0 C++

• AdventOfCode2021

  0 0 6.3 Python

  Python 3 using Numpy: https://github.com/HeyHouBenjo/AdventOfCode2021/blob/main/20/20.py

• adventOfCode

  0 13 0.0 Python

  Advent of Code solutions in a number of different languages (by codemicro)

• advent-of-code-solutions

  0 0 0.0 JavaScript

  My JS solutions for https://adventofcode.com/ (by AugustsK)

• advent2021

  0 0 0.0 Python

• advent-of-code

  1 4 0.0 JavaScript

  My Advent of Code solutions through the years - mostly JS (by davidsharp)

  Almost walked away from this when caught out by the "empty" space flipping. But stuck with it and managed to make it work without changing my approach too much.

• AdventOfCode2021

  0 0 0.0 Python

  Code

• Advent-of-Code

  0 10 0.0 Rust

  Solutions for Advent of Code ⭐️ (by kvrhdn)

  Solution in Go: kvrhdn/Advent-of-Code//advent-of-code-2021/day20/day20.go

• advent-of-code-2021

  1 3 0.0 Zig

  zig solutions to advent of code 2021 (by jchevertonwynne)

• AoC2021

  0 0 0.0 Swift

  Advent of Code 2021 (by gereons)

• AdventOfCode2021

  0 3 1.8 Jupyter Notebook

  Advent of code 2021 (by marcodelmastro)

• Advent-of-Code

  9 6 0.0 Python

  Advent of Code (by michaeljgallagher)

  Nice problem today

• aoc_bp

  0 0 0.0 JavaScript

  My AOC boilerplate

  JavaScript with some optimizations

• adventofcode2021

  0 1 0.0 Kotlin

  Advent of Code 2022 (by GoossensMichael)

  Kotlin

• advent-of-code

  11 5 0.0 Scala

  My solutions to the Advent of Code (by aaronreidsmith)

  Scala. Really enjoyed today's puzzle. A classic Game of Life with a little twist

• aoc2021

  0 3 0.0 Slash

  Advent of Code 2021 on my homemade 16-bit CPU SCAMP (by jes)

• AoC2021

  0 0 0.0 Python

  github

• adventofcode

  25 17 0.0 Elixir

  Advent of code solutions (by mathsaey)

• advent-of-code

  0 1 0.0 Python

  My Advent of Code submissions (by DecemberDream)

  Python day 20, code for part 1 also worked for part 2 without any changes.

• aoc2021-abap

  0 1 1.9 ABAP

  AdventOfCode 2021 solutions in ABAP

  I've created solutions for all days except day 19 in ABAP. Feel free to take a look at the whole repository. The code is standalone and doesn't require any DDIC types or classes. Just a local file on the application server to read the input from.

• AoC

  0 0 0.0 C#

  C#

• advent-2021

  0 5 6.8 Rust

  [Moved to: https://github.com/Crazytieguy/advent-of-code] (by Crazytieguy)

• adventofcode

  0 0 0.0 Python

  Advent of Code solutions (by alchemyst)

  Python + SciPy

• advent-of-code

  0 0 0.0 C#

  My Advent of Code solutions (by premun)

• advent-of-code-2021

  0 0 0.0 Haskell

  Haskell: https://github.com/MaT1g3R/advent-of-code-2021/blob/master/day20/src/Lib.hs

• adventofcode

  36 14 0.0 TypeScript

  Solutions for problems from AdventOfCode.com (by bhosale-ajay)

  TypeScript, simple solution.

• advent-of-code

  0 0 0.0 Common Lisp

  Advent of code solutions (by tallbikeguy)

• advent-of-code-2021

  0 0 0.0 Java

  Advent of Code 2021 Solutions (by jerchende)

  I used my Matrix Implementaion, which was usefull in seven puzzles until now :).

• aoc2021

  0 0 3.6 Java

• aoc2021

  0 0 3.6 Zig

  advent of coding zig (by Kiraffi)

  Writing in Zig, seems to get around 1.7ms run time for combined part 1 and 2. Not exactly pretty code, and I feel like there has to be better way to do stuff. https://github.com/Kiraffi/aoc2021/blob/main/src/day20.zig

• advent_of_code

  2 0 0.0 Perl

  Advent of Code solutions (by domm)

• adventofcode2021

  0 1 0.0 Python

  My Solution to AOC2021 (by HrRodan)

  Python: 28 lines and a rather good performance by using numpy, a bool array, and generic filter from ndimage. The generic filter again felt a little bit like cheating :) https://github.com/HrRodan/adventofcode2021/blob/master/day20/day20.py

• aoc

  0 3 0.0 JavaScript

  Advent of Code Solutions (by joeyemerson)

• advent-of-code

  0 2 0.0 C#

  Advent of Code solutions by me (by Corniel)

  Full code at Github

• adventofcode2021

  0 2 0.0 OCaml

• advent-of-code

  0 1 0.0 JavaScript

  Watch me give up half way through >_> (by gabts)

• aoc2021

  0 26 0.0 Kotlin

  Advent of Code 2021 - my answers

  Haskell 621/603

• AdventOfCode2021FSharp

  0 5 0.0 Jupyter Notebook

  Solutions for Advent of Code 2021 in F#

  F# solution in Jupyter Notebook. Part 1 takes 500ms but Part 2 takes 24s. Any suggestions on where performance could be improved would be appreciated!

• Advent-of-Code-2021

  0 0 0.0 Rust

  My solution for the advent of code 2021, mainly written in Rust (by tmokenc)

  Rust

• AdventOfCode

  21 2 0.0 Python

  Hacky solutions for [Advent of Code](https://adventofcode.com), working on past problems (by AllanTaylor314)

  The state of a pixel after 1 step depends on the 3x3 grid around it; The state after 2 steps depends on the 5x5 grid around it etc. (Which is how I initially solved part 1) The state after n steps depends on the (2*n+1)^2 pixels around it. This means that the farthest affected pixels are n pixels away from the initial edge i.e. a 100x100 image enhanced 50 times creates an image that is 200*200 (increased by 50 lines on each of the four sides). Anything outside that range is assumed to be empty after all the steps have been applied (Which is true for any input and number of steps where the answer is finite).

• advent-of-code-2021

  0 6 0.0 Python

  All solutions for the 2021 Advent of Code event. (by Bruception)

• AdventOfCode

  0 5 0.0 Nim

  Advent of Code Solutions (by auxym)

• advent-of-code-2021

  0 2 0.0 Go

  My Advent of Code solutions. I prioritize readability over performance where possible. (by tcc-sejohnson)

• BenchmarkDotNet

  23 9,434 8.1 C#

  Powerful .NET library for benchmarking

  

  Maybe you can create a benchmarking project where you test both the C# and F# algorithm using benchmarkdotnet?

• aoc2021

  0 0 0.0 Nim

  Day 20

• adventofcode

  0 1 1.8 Go

  https://adventofcode.com/2021/ (by Torakushi)

• aoc20

  0 0 1.0 Go

• AdventOfCode2021

  0 1 0.0 C++

• advent-of-code-go

  20 111 0.0 Go

  All 8 years of adventofcode.com solutions in Go/Golang; 2015 2016 2017 2018 2019 2020 2021 2022

• AdventOfCode2021

  0 11 4.3 C++

  My solutions to https://adventofcode.com/2021 (by willkill07)

• adventofcode

  0 0 0.0 Python

  my solutions to adventofcode.com (by simeydk)

  If you're interested, I did a similar thing, also using Numpy, but tried to use numpy's vector methods rather than loops Solution to 2021 Day 20 in Python (using Numpy)

• aoc-2021-in-kotlin

  0 1 1.8 Kotlin

• Advent-of-code-2021

  0 5 4.5 Python

  [Moved to: https://github.com/Toanuvo/Advent-of-code] (by Toanuvo)

• advent-of-code-2021

  0 0 0.0 Jupyter Notebook

  Code here.

• AdventOfCode2021.jl

  0 17 0.0 Julia

  Advent of Code 2021 in Julia

• advent-of-code-2021-kotlin

  0 3 3.6 Kotlin

  🎄 Solutions to Advent of Code 2021 in Kotlin 💜

  Kotlin code - Notes

• Sonar

  www.sonarsource.com

  sponsored

  Write Clean Python Code. Always.. Sonar helps you commit clean code every time. With over 225 unique rules to find Python bugs, code smells & vulnerabilities, Sonar finds the issues while you focus on the work.

  

Suggest a related project