Advent of Code is an Advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language you like. People use them as a speed contest, interview prep, company training, university coursework, practice problems, or to challenge each other.

You don’t need a computer science background to participate - just a little programming knowledge and some problem solving skills will get you pretty far. Nor do you need a fancy computer; every problem has a solution that completes in at most 15 seconds on ten-year-old hardware.

Blazing fast Rust solutions for every Advent of Code puzzle from 2015 to 2025, solving 524 stars in less than 1 second.

• UpdatedDec 16, 2025
• Rust

🎄 Advent of Code (2015-2025) in C#

• UpdatedDec 15, 2025
• C#

Advent of Code solutions 2015-2023

• UpdatedApr 3, 2024
• Jupyter Notebook

Python solutions to Advent of Code puzzles,https://adventofcode.com/

• UpdatedDec 12, 2025
• Python

Advent of Code statistics for the first 100 submissions visualized

• UpdatedDec 26, 2024
• HTML

Advent of Code problems solved in Python.

• UpdatedDec 14, 2025
• Jupyter Notebook

My C# and F# Advent Of Code solutions

• UpdatedDec 17, 2025
• C#

Advent of Code solutions of 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 and 2025 in Scala

• UpdatedDec 15, 2025
• Scala

My solutions for Advent of Code

• UpdatedJan 1, 2025
• TypeScript

This repository contains solutions to each of the problems in Advent of Code 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023 and 2024 (all years) in C++

• UpdatedDec 9, 2025
• C++

Advent of Code in Rust, ReScript, ReasonML, Go, TypeScript, and Python

• UpdatedDec 13, 2025
• Rust

Advent of Code

• UpdatedDec 9, 2023
• Swift

🎄 Advent of Code (2015-2025) in JavaScript

• UpdatedDec 15, 2025
• JavaScript

Answers to Advent of Code

• UpdatedDec 12, 2025
• C#

Solutions for Advent of Code puzzles. In C, C++, Python, Rust, Golang, PHP and Lua. All years.

• UpdatedDec 12, 2025
• C

Complete 2022 to 2015 entries for the annual Advent of Code challenge, written in concise idiomatic functional Scala.

• UpdatedNov 3, 2024
• Scala

(Mostly) Elm solutions for Advent of Code

• UpdatedDec 11, 2025
• Elm

My Advent of Code Solutions - 350/350 Stars

• UpdatedDec 1, 2024
• Python

Advent of Code (http://adventofcode.com) solutions written in Python 3

• UpdatedDec 16, 2024
• Python

Collection of my Advent of Code repositories from 2015-2025 - 524/524 stars ⭐

• UpdatedDec 12, 2025
• Python