Awesome Advent of Code

This is a collection of awesome resources related to the yearly Advent of Code challenge.

• The Official AoC Website
• The AoC Subreddit
• Project Templates
• Tools and Utilities
• Other Advent Calendars
• 2018
• 2019
• 2020
• 2021
  • Solutions
    • Ada
    • APL
    • Assembly
    • AWK
    • Bash
    • C
    • C#
    • C++
    • Clojure
    • Common Lisp
    • Crystal
    • D
    • Dart
    • Elixir
    • Elm
    • Erlang
    • Excel
    • F#
    • Go
    • Groovy
    • Hamler
    • Haskell
    • Haxe
    • HolyC
    • Idris
    • J
    • Java
    • JavaScript
    • jq
    • Julia
    • Kotlin
    • LDPL
    • Lua
    • MATLAB
    • Nim
    • Objective-C
    • OCaml
    • PHP
    • Perl
    • Pony
    • PowerShell
    • Prolog
    • Python
    • R
    • Racket
    • Raku
    • ReasonML
    • Red
    • REXX
    • Ruby
    • Rust
    • Smalltalk
    • Scala
    • Scheme
    • Solidity
    • SpectX
    • SQL
    • Standard ML
    • Swift
    • TypeScript
      • Deno
    • Unison
    • VB.NET
    • Whitespace
    • Zig
  • Live Streams

---

Project Templates

Templates, cookiecutters and skeletons for quickly setting up projects in your favourite language.

• S-ecki/AdventOfCode-Starter-Dart (Dart)
• Reason Starter kit for Advent of Code (Reason and OCaml)
• dave-burke/advent-of-code-java-starter (Java)
• gobanos/cargo-aoc (Rust)
• nickyvanurk/advent-of-code-rust-template (Rust)
• hughjdavey/aoc-kotlin-starter (Kotlin)
• Jadarma/advent-of-code-kotlin (Kotlin)
• kindermoumoute/adventofcode (Go)
• staylorwr/elixir_aoc (Elixir)
• mhanberg/advent-of-code-elixir-starter (Elixir)
• AlexeSimon/adventofcode (Python)
• UncleCJ/advent-of-code (Jupyter Python Notebooks)
• sindrekjr/AdventOfCodeBase (C#)
• mhanberg/advent-of-code-clojure-starter (Clojure)
• caderek/aoc-starter-js (JavaScript)
• caderek/aoc-starter-ts (TypeScript)
• mariotacke/template-advent-of-code (JavaScript)
• arkadye/advent_of_code (C++)
• eduherminio/AdventOfCode.Template (C#)
• izexi/aoc-ts-template (TypeScript)
• advent-of-code-template (PHP)
• amorriscode/advent-of-code (JavaScript)
• nnari/aoc-typescript-starter (TypeScript)
• SpexGuy/Zig-AoC-Template (Zig)
• pacso/aoc_rb (Ruby)
• wizardofzos/aoc2021 (Flask-API, Python running REXX on Mainframes)
• ismtabo/advent-of-code-deno-template (TypeScript / Deno)
• alvesvaren/AoC-template (Python)

Tools and Utilities

• Alfie -- Online JS editor that helps users solve AoC problems.
• Browser extension for private leaderboard visualization
  • Chrome extension
  • Firefox extension
• Browser extension which enhances your personal stats page with a time from Part 1 to Part 2 column (it also tracks when you've first opened a puzzle and offsets the completion times accordingly)
  • Chrome extension
  • Firefox extension
• Globals medals overview -- Alternative global leaderboard showing first, second and third places as gold, silver and bronze medals.
• Scatterplot of first 100 -- Scatterplot of the time taken to solve the parts of each puzzle by the first 100 people that solved it.
• aocdl -- Command-line utility that automatically downloads your personal input file while you read the puzzle description (Go).
• aocinput -- CLI for getting inputs. Clipboard support. Polite to AoC. Nice help and options. (Go)
• aoc_rb -- A Ruby gem that generates an empty AoC project, and provides command-line tools for fetching input and submitting solutions (Ruby)
• aoc-cli -- Command-line utility that helps solve problems in ruby: it downloads your personal input file, creates the sample source files and benchmarks your solutions (Ruby).
• AoCHelper -- NuGet library that simplifies puzzle solving and provides benchmarking (.NET).
• AdventOfCode.Runner -- NuGet package that automatically provides your puzzles solvers with the input from the AOC site and verifies calculated answers (.NET / C#).
• aocleaderboard -- get over the 200-member limit for private leaderboards and combine multiple leaderboards in a single page with recalculated scores.
• advent-of-code-api -- Haskell library for querying AOC prompts, inputs, and leaderboards (Haskell)
• advent-of-code-ocr -- Command line utility and Haskell library for parsing AoC ascii art words (Haskell)
• advent-of-code-ocr -- Python module for parsing AoC ascii art words (Python)
• aoc-ranking -- Show all non-zero score AoC participants in one, global scoreboard. (Python)
• aoc-cli -- Read puzzle descriptions, download input, and submit answers from the comfort of your terminal. (Rust)
• adventofcode-badge -- An interface over Shields.io to facilitate the creation of badges from Advent of Code.
• @aocjs/cli -- Package for executing solutions with hot reload and data fetching (JavaScript, TypeScript)
• eggnog -- CLI for getting input, directions (with nice colors!), and submitting answers. Caches absolutely everything. (C)
• aoc-badges-action -- A GitHub action for updating various aoc-related badges in your README (GitHub Action, Python)
• advent-readme-stars -- A GitHub action that adds and maintains a table of your AoC progress to your README (GitHub Action, Python)
• aoctimer -- A language-agnostic, multiplatform tool to measure your solution time in relative units, so you can share and compare your results with others.
• aocrunner -- A fast solutions runner and template generator, with simple CLI, customizable template, simple testing utility, live reload, and adventofcode.com integration. (JavaScript, TypeScript)

Other Advent Calendars

24 days of cool stuff regarding .

• Raku Advent Calendar
• QEMU Advent Calendar

2021

WARNING: All of these likely contain spoilers.

Read CONTRIBUTING.md to learn how to add your own repos.

Solutions

Ada

Solutions to AoC in Ada.

APL

Solutions to AoC in APL.

• jayfoad/aoc2021apl
• pitr/aoc
• rak1507/Advent-Of-Code-APL
• technic/AoC2021_APL

Assembly

Solutions to AoC in Assembly.

AWK

Solutions to AoC in AWK.

• nusretipek/Advent-of-Code-2021
• ofrank123/AoC2021
• phillbush/aoc

Bash

Solutions to AoC in Bash.

• ColasNahaboo/advent-of-code-my-solutions

C

Solutions to AoC in C.

• Fritz179/aoc-2021
• Jamesbarford/advent-of-code-2021
• breakthatbass/advent_of_code2021
• federicovilla55/Advent-of-Code
• jeromkiller/AoC2021
• sbancuz/aoc-2021
• vierofernando/ansi-adventure

C#

Solutions to AoC in C#.

• DjordjeNedovic/Advent-of-Code
• Hawk1401/AdventOfCode2021
• ShootMe/AdventOfCode
• Virenbar/AdventOfCode
• akaritakai/AdventOfCode2021-Csharp
• eduherminio/AoC2021
• encse/adventofcode
• norrbacka/aoc2021
• ntovas/AdventOfCode
• viceroypenguin/adventofcode
• vladsm/adventofcode-2021-dotnet

C++

Solutions to AoC in C++.

• DichromaticLB/AOC2021
• FilipHusnjak/AdventOfCode-2021
• LMesaric/AoC-2021
• TheRealMolen/adventofcode21
• lento234/advent2021
• lvrcek/advent-of-code-2021
• m3m0ry/aoc2021
• vss2sn/advent_of_code

Clojure

Solutions to AoC in Clojure.

• slotThe/AOC-2021
• unparalloser/advent-of-code-2021
• ventrosky/advent-of-code-2021
• madbence/aoc-21-clj

Common Lisp

Solutions to AoC in Common Lisp.

• VaclavSynacek/advent-of-code
• akagr/aoc-21
• caseneuve/aoc-2021-clisp
• dwclark/advent-of-code-2021
• guojing0/aoc-2021

Crystal

Solutions to AoC in Crystal.

• jazcarate/advent-of-code-2021

D

Solutions to AoC in D.

Dart

Solutions to AoC in Dart.

• S-ecki/AdventOfCode-2021
• dangerground/adventofcode-2021
• julemand101/AdventOfCode2021

Elixir

Solutions to AoC in Elixir.

• MarcusCemes/advent-of-code-2021
• Tyflomate/advent_of_code
• YauHsien/advent-of-code-2021
• ballpointcarrot/advent-of-code-2021
• edwardzhou/advent_code_2021
• maco/advent_of_code
• memoriesadrift/AoC2021-Elixir
• sevenseacat/advent_of_code
• wasi0013/advent_of_code

Elm

Solutions to AoC in Elm and Literate Elm.

• n1k0/elm-advent-2021
• ryanolsonx/aocelm2021

Erlang

Solutions to AoC in Erlang.

• hypothermic/advent-of-code-2021

Excel

Solutions to AoC in Excel.

• Kolsky/AoC-2021-Excel
• detrang1301/adventofcode-2021-excel

F#

Solutions to AoC in F#.

• JanDotNet/AdventOfCode
• Texl/AdventOfCode
• ThomasGoetzmann/AdventOfCode2021

Go

Solutions to AoC in Go.

• Alex-Wauters/advent-go-2021
• BorisLeMeec/adventofcode
• Christheoreo/advent-of-code-2021
• Maitgon/Advent2021
• SwiftPush/advent-of-code-2021
• angristan/advent-of-code-2021
• chigley/advent2021
• codemicro/adventOfCode
• dellink/advent-of-code
• dergeberl/aoc
• devries/advent_of_code_2021
• flopp/aoc2021
• ga-paul-t/advent-of-code-2021
• hija/aoc-2021
• jsgv/advent-of-code
• mbalc/advent-of-code-2021-golang
• nobbs/advent-of-code-in-go
• obalunenko/advent-of-code
• ostcar/aoc2021
• pvainio/adventofcode
• ridaamirini/advent-of-code
• shytikov/advent-of-go

Groovy

Solutions to AoC in Groovy.

Hamler

Solutions to AoC in Hamler.

Haskell

Solutions to AoC in Haskell.

• DestyNova/advent_of_code_2021
• SoleneGK/advent-of-code
• TommasoAmici/haskell-aoc-2021
• Vince7778/adventofcode2021
• daggy1234/aoc2021
• ggzor/advent-of-code-2021
• ilyasm0919/AdventOfCode2021
• jitwit/aoc
• p-kostic/AdventOfCode2021
• prikhi/advent-of-code-2021
• shepherdjerred/advent-of-code-2021
• sonowz/advent-of-code-haskell

Haxe

Solutions to AoC in Haxe.

HolyC

Solutions to AoC in HolyC (TempleOS).

• tsoding/aoc-2021

Idris

Solutions to AoC in Idris.

J

Solutions to AoC in J.

• jitwit/aoc

Java

Solutions to AoC in Java.

• OmarAssadi/advent-2021
• SimonBaars/AdventOfCode-Java
• Sycix-HK/Advent-of-Code-2021
• akaritakai/AdventOfCode2021
• akbence/adventofcode
• amalagraba/adventofcode-2021
• jerchende/advent-of-code-2021
• nsirons/programming-puzzles
• pvainio/adventofcode

JavaScript

Solutions to AoC in JavaScript.

• Fritz179/aoc-2021
• JakobMakovac/advent-of-code
• NullDev/Advent-of-Code
• Omay238/advent-of-code
• Pandicon/Advent-of-Code
• Scttpr/Advent-of-Code
• Totto16/AOC-2021
• ald890/advent-of-code
• carpusherw/advent-of-code-2021
• chinesedfan/adventofcode
• eli6/advent-of-code
• janfabian/adventofcode
• joaomlneto/advent-of-code
• thejan14/adventofcode2021
• warriordog/advent-of-code-2021
• xhayper/advent-of-code

jq

Solutions to AoC in jq.

• christianberg/advent

Julia

Solutions to AoC in Julia.

• CmdQ/AoC
• DearRude/advent-of-code
• JakobSachs/aoc21
• Praful/advent_of_code
• goggle/AdventOfCode2021.jl
• lostella/advent-of-code
• maxwindiff/advent2021
• racinmat/advent_of_code_2021
• tobijkl/advent-of-code

Kotlin

Solutions to AoC in Kotlin.

• 7rebux/advent-of-code-2021
• ArpitShukIa/AdventOfCode2021
• RaphaelTarita/AoC-2021
• The-Self-Taught-Software-Engineer/advent-of-code-2021
• agrison/advent-of-code
• edgars-supe/advent-of-code
• hughjdavey/aoc-2021
• marc-bouvier-katas/Kotlin_EduTools_Advent_of_Code_2021
• matios13/advent_of_code
• sanderploegsma/advent-of-code
• tchojnacki/advent-of-code-2021-kotlin
• zakmat/AdventOfCode2021

LDPL

Solutions to AoC in LDPL.

Lua

Solutions to AoC in Lua.

• jwise/aoc
• xhayper/advent-of-code

MATLAB

Solutions to AoC in MATLAB (Octave).

Nim

Solutions to AoC in Nim.

• AP2008/nim-aoc2021
• codemicro/adventOfCode
• vanyle/AdventOfCode2021

Objective-C

Solutions to AoC in Objective-C.

OCaml

Solutions to AoC in OCaml.

• jamespwilliams/aoc2021

PHP

Solutions to AoC in PHP.

• arxeiss/advent-of-code-2021
• jvancoillie/advent-of-code
• jvwag/advent-of-code
• kirara/advent-of-code
• ridaamirini/advent-of-code
• vuryss/aoc-php

Perl

Solutions to AoC in Perl.

• thomascoe/advent-of-code

Pony

Solutions to AoC in Pony.

Prolog

Solutions to AoC in Prolog.

• YauHsien/advent-of-code-2021
• jayhardee9/aoc-2021

PowerShell

Solutions to AoC in PowerShell.

Python

Solutions to AoC in Python.

• AkaruiYami/AdventOfCode-2021
• Arrezz/AdventOfCode2021
• Aufbakanleitung/advent-of-code-2021
• DevOFVictory/AdventOfCode
• GeertLitjens/advent-of-code-2021
• IanFindlay/advent-of-code
• James-Ansley/adventofcode
• JohnScolaro/advent-of-code
• KevinL10/advent-of-code-2021
• MasterMedo/aoc
• NimVek/advent-of-code
• SwampThingTom/AoC2021
• TechnoTone/AdventOfCode2021
• TomDufall/prog-puzzles
• Vasile-Hij/AOC-2021
• adamml/advent-of-code
• alihacks/advent-of-code
• alvesvaren/AoC-2021
• benediktwerner/AdventOfCode
• blackfisch/adventofcode-2021
• cobanov/advent-of-code
• codemicro/adventOfCode
• daggy1234/aoc2021
• dhimmel/advent-of-code
• dionyziz/advent-of-code
• ernestoarbitrio/AoC2021
• evalkaz/advent-of-code-2021
• filipmlynarski/Advent-of-Code
• fridokus/advent-of-code
• fuglede/adventofcode
• gamma032steam/advent-of-code-2021
• grigoresc/adventofcode.2021
• jhrcook/advent-of-code_2021
• jopein/aoc2021
• k2bd/advent-of-code
• kresimir-lukin/AdventOfCode2021
• lostella/advent-of-code
• lukacupic/Advent-Of-Code-2021
• lypnol/adventofcode-2021
• martino-vic/Advent
• mathstrains21/Advent-Of-Code
• mebeim/aoc
• nhrade/advent-of-code
• nitekat1124/advent-of-code-2021
• noah-kg/AdventOfCode
• novoselov-ab/adventofcode-2021-python
• orfeasa/advent-of-code-2021
• pranasziaukas/advent-of-code-2021
• prashnts/advent-of-code--2021
• python-b5/advent-of-code-2021
• red-clown/advent-of-code
• redraw/aoc
• roronoasins/adventofcode
• rosscon/rosscon_advent_of_code
• sejaldua/advent-of-code-2021
• smetanin-av/advent_of_code
• taddeus/advent-of-code
• tobi6112/AoC-2021
• viliampucik/adventofcode
• vlopezferrando/advent-of-code
• w-m/aoc2021
• widdin/advent-of-code
• xanthoko/Advent-of-Code
• yspreen/adventofcode
• zedrdave/advent_of_code

R

Solutions to AoC in R.

• CharnelMouse/AdventOfCode2021
• Zedseayou/advent_of_code
• bigfarts/aoc2021
• czeildi/advent-of-code
• midoriyama0323/adventofcode2021
• plannapus/Advent_of_Code
• rrrlw/advent-of-code

Racket

Solutions to AoC in Racket.

• Bogdanp/aoc2021
• filiplajszczak/advent-of-code-2021
• lojic/LearningRacket
• parry84/aoc2021

Raku

Solutions to AoC in Raku.

• Hydrazer/advent-of-code

ReasonML

Solutions to AoC in ReasonML.

Red

Solutions to AoC in Red.

REXX

Solutions to AoC in REXX.

• wizardofzos/aoc2021

Ruby

Solutions to AoC in Ruby.

• damyvv/advent-of-code-2021
• danhealy/advent-of-code-2021
• narze/advent-of-code-2021
• zsarge/advent-of-code-2021

Rust

Solutions to AoC in Rust.

• Basicprogrammer10/Advent-Of-Code-2021
• Hydrazer/advent-of-code
• ManevilleF/AdventOfCode2021
• agubelu/Advent-of-Code-2021
• akaritakai/AdventOfCode2021-Rust
• asdrubalini/advent-of-code
• believer/advent-of-code
• dominikstanojevic/advent-of-code-2021
• fee1-dead/aoc
• fspoettel/advent-of-code-2021
• ga-paul-t/advent-of-code-2021
• hashedone/aoc2021
• janreggie/aoc-rs
• martinxxd/adventofcode-2021-rust
• mayjs/advent_of_code_2021
• megatank58/adventofcode
• nickyvanurk/advent-of-code
• pemoreau/advent-of-code-2021
• poyea/aoc
• richardneililagan/adventofcode-2021
• sathwikmatsa/aoc21
• sergree/aoc2021
• sigma67/aoc21
• snxk/adventofcode-2021
• stevejb71/rust-advent-of-code-2021
• timvisee/advent-of-code-2021
• tobiges/advent-of-code-2021
• tumdum/aoc2021
• varunmehrishi/AdventOfCode2021
• yeurch/advent-of-code
• zsacul/AdventOfCode2021

Smalltalk

Solutions to AoC in Smalltalk.

Scala

Solutions to AoC in Scala.

• 2m/adventofcode2021
• FlorianCassayre/AdventOfCode-2021
• fdlk/advent-2021
• ggzor/advent-of-code-2021
• gnmathur/AdventOfCode-2021
• mzielinski/advent-of-code-2021
• sim642/adventofcode
• williamhaw/advent-of-code-2021

Scheme

Solutions to AoC in Scheme.

• AiziChen/advent-of-code
• jitwit/aoc

Solidity

Solutions to AoC in Solidity.

• ethsgo/aoc

SpectX

Solutions to AoC in SpectX.

SQL

Solutions to AoC in SQL.

• alihacks/advent-of-code

Standard ML

Solutions to AoC in Standard ML.

• qweeze/adventofcode

Swift

Solutions to AoC in Swift.

• Frugghi/Advent-of-Code-2021
• bence-t0th/Advent-of-Code-2021
• bhargavg/AdventOfCode
• fguchelaar/AdventOfCode2021
• onevcat/advent2021
• scottluxenberg/AdventOfCode2021
• davedelong/AOC

TypeScript

Solutions to AoC in TypeScript.

• Charlesworth/adventOfCode2021
• DarthGandalf/advent-of-code
• atme/advent-of-code-2021
• caderek/aoc2021
• fstreicher/aoc-2021
• marcobiedermann/advent-of-code
• pierreyoda/advent-2021-svelte
• sanraith/aoc2021
• wodorek/advent-of-code-JS

Deno

Solutions to AoC in Deno (TypeScript).

• Im-Beast/advent_of_code
• LionC/aoc-2021
• N8Brooks/deno_aoc
• ismtabo/advent-of-code-2021

Unison

Solutions to AoC in Unison.

VB.NET

Solutions to AoC in VB.NET.

Whitespace

Solutions to AoC in Whitespace.

• andrewarchi/ws-challenges

Zig

Solutions to AoC in Zig.

• jwarwick/aoc_2021
• scorphus/advent-of-code-2021
• DearRude/advent-of-code

Live Streams

Folks who are live streaming their process.

• Aufbakanleitung