adventofcode
Advent of code solutions (by mathsaey)
aoc2021
Advent of Code 2021 - my answers (by ephemient)
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adventofcode | aoc2021 | |
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55 | 32 | |
20 | 26 | |
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7.8 | 0.0 | |
4 months ago | about 1 year ago | |
Elixir | Kotlin | |
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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.
adventofcode
Posts with mentions or reviews of adventofcode.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-12-09.
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-❄️- 2023 Day 10 Solutions -❄️-
Part one went fairly fast, but spent quite some time on getting part two right. I settled on the approach of just iterating over the grid and using a boolean to see if I had to count elements or not. However, I had some issues figuring out when to swap, this post by /u/rogual helped me figure it out. After that I lost quite some time on an error that only occurred with my input, not with the example input. It turned out that my loop (which I take form my p1 solution) didn't include the start node, which caused all sorts of counting issues.
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-❄️- 2023 Day 4 Solutions -❄️-
[Language: Elixir] https://github.com/mathsaey/adventofcode/blob/master/lib/2023/4.ex
- -🎄- 2022 Day 25 Solutions -🎄-
- -🎄- 2022 Day 24 Solutions -🎄-
- -🎄- 2022 Day 23 Solutions -🎄-
- -🎄- 2022 Day 22 Solutions -🎄-
- -🎄- 2022 Day 21 Solutions -🎄-
- -🎄- 2022 Day 20 Solutions -🎄-
- -🎄- 2022 Day 19 Solutions -🎄-
- -🎄- 2022 Day 18 Solutions -🎄-
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 adventofcode and aoc2021 you can also consider the following projects:
AdventOfCode2021 - Advent of code 2021
adventofcode - Advent of Code solutions of 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 and 2023 in Scala
AoC - my personal repo for the advent of code yearly challenge
adventofcode - Answers to Advent of Code
adventofcode - Advent of Code challenge solutions
roast - 🦋 Raku test suite
rockstar - The Rockstar programming language specification
advent-2021 - [Moved to: https://github.com/Crazytieguy/advent-of-code]
aoc2021 - Advent of Code 2021 on my homemade 16-bit CPU SCAMP
advent-of-code-go - All 8 years of adventofcode.com solutions in Go/Golang; 2015 2016 2017 2018 2019 2020 2021 2022