advent_of_code
This repository contains solutions to each of the problems in Advent of Code 2017, 2018, 2019, 2020, 2021, 2022 and 2023 in C++ (and 2020 in Python as well) (by vss2sn)
aoc2021
Advent of Code 2021 - my answers (by ephemient)
Our great sponsors
| advent_of_code | aoc2021 | |
|---|---|---|
| 8 | 32 | |
| 42 | 26 | |
| - | - | |
| 8.0 | 0.0 | |
| 16 days ago | about 1 year ago | |
| C++ | Kotlin | |
| - | - |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
advent_of_code
Posts with mentions or reviews of advent_of_code.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2022-12-11.
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[2023 Day 6 p2] using maths?
In case you'd like to see an implementation, take a look here, though I'd suggest attempting to code it in without looking.
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-🎄- 2022 Day 12 Solutions -🎄-
Part 2 (Each file is a self-contained solution)
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[2022 Day 7] Trying to do AoC in C++ having known the language for less than 2 weeks:
In case you're pursuing this and want a reference: Part 1 Part 2 implemented using unique_ptr in cpp.
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2022 Day1 [C++] I can't find a single Solution in Your megathread in C++
One more for the list: https://github.com/vss2sn/advent_of_code
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-🎄- 2021 Day 24 Solutions -🎄-
Part 1
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-🎄- 2021 Day 17 Solutions -🎄-
Solutions in C++: Part 1 Part 2 (As always, every file is a self ontained solution) Explanatory notes added for the math used.
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[2021 Day 14 (Part2)][C++20] It still takes hours :-D
Should you choose the latter: Part 2 in C++.
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-🎄- 2021 Day 1 Solutions -🎄-
Solutions in C++: Part 1 Part 2
aoc2021
Posts with mentions or reviews of aoc2021.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2022-02-04.
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All years, all days, everything in Haskell
I've done every year in Haskell (2015 2016 2017 2018 2019 2020 2021), and so have several other people such as /u/glguy. I don't see if /u/mstksg has anything published for 2015 but they've done 2016 2017 2018 2019 2020 2021 along with some pretty good writeups, I recommend checking those out.
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Jetbrains looks like it's about to release Compose ui for ios, and web!
I ran my own benchmarks for a whole ton of code at https://github.com/ephemient/aoc2021 on both Linux x64 and macos x64, and ended up disabling Kotlin/Native because it was varying between 10x and 100x slower than Kotlin/JVM, eventually timing out on CI. The generated code may be reasonable thanks to LLVM, but the runtime certainly is not.
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-🎄- 2021 Day 25 Solutions -🎄-
Took a while for me to get around to completing this in Kotlin, Python, and Rust as well, since I was working on optimizing other solutions, but I finally made it.
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-🎄- 2021 Day 24 Solutions -🎄-
So I switched tacks and implemented this in Kotlin, where mutation is easier. First version was brute-force with duplicate state avoidance (checked before the state explosion at every input), which worked quickly enough for part 1, but ran into OOMs for part 2. Once I replaced the HashSet with a custom LruSet (and later a simpler CacheSet which simply overwrites on hash collisions) it ran part 2 in a few minutes. I then ported this into Haskell.
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-🎄- 2021 Day 23 Solutions -🎄-
Haskell 1171/339
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-🎄- 2021 Day 22 Solutions -🎄-
Kotlin, Python, and Rust solutions are the same solution but much uglier.
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-🎄- 2021 Day 21 Solutions -🎄-
I'm doing the same cached recursion in Kotlin, Python, and Rust.
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-🎄- 2021 Day 20 Solutions -🎄-
Haskell 621/603
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-🎄- 2021 Day 19 Solutions -🎄-
Haskell 258/240
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-🎄- 2021 Day 18 Solutions -🎄-
Haskell Kotlin 622/1185
What are some alternatives?
When comparing advent_of_code and aoc2021 you can also consider the following projects:
OpenSeesPy - OpenSeesPy versions, doc, and pip
adventofcode - Advent of Code solutions of 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 and 2023 in Scala
advent-of-code-2021
AoC - my personal repo for the advent of code yearly challenge
gifski - GIF encoder based on libimagequant (pngquant). Squeezes maximum possible quality from the awful GIF format.
adventofcode - Advent of Code challenge solutions
signal-temporal-logic - A library for efficiently working with Signal Temporal Logic (STL) and its quantitative semantics. Has Python bindings!
roast - 🦋 Raku test suite
adventofcode - AoC solutions and visualizations for the years 2021 (Julia), 2022 (Kotlin), 2023 (Python)
advent-2021 - [Moved to: https://github.com/Crazytieguy/advent-of-code]
AOC - Advent of Code solutions collection using C++23
advent-of-code-go - All 8 years of adventofcode.com solutions in Go/Golang; 2015 2016 2017 2018 2019 2020 2021 2022
advent_of_code vs OpenSeesPy
aoc2021 vs adventofcode
advent_of_code vs advent-of-code-2021
aoc2021 vs AoC
advent_of_code vs gifski
aoc2021 vs adventofcode
advent_of_code vs signal-temporal-logic
aoc2021 vs roast
advent_of_code vs adventofcode
aoc2021 vs advent-2021
advent_of_code vs AOC
aoc2021 vs advent-of-code-go