advent-of-code
aoc2021
advent-of-code | aoc2021 | |
---|---|---|
14 | 32 | |
70 | 26 | |
- | - | |
8.5 | 0.0 | |
5 months ago | about 1 year ago | |
JavaScript | Kotlin | |
MIT License | - |
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advent-of-code
- [2022] Relevant XKCD: Game AIs
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-🎄- 2021 Day 24 Solutions -🎄-
For a full write-up, see this repo, and for a non-annotated solution, see:
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-🎄- 2021 Day 18 Solutions -🎄-
Otherwise, the main way I solved this was with a flat list of tokens rather than a truly nested structure. This was very similar to last year's Day 18, which I also solved in a similar manner.
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-🎄- 2021 Day 9 Solutions -🎄-
Code can be found in this repo.
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-🎄- 2021 Day 7 Solutions -🎄-
code
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-🎄- 2021 Day 5 Solutions -🎄-
First 2D one! Got to reuse my InfiniteGrid class, which made this much easier.
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How to beat AOC 2019, day 13, part 2?
Mine only took about 2 minutes when I originally recorded it. I've since added some optimizations to my Intcode computer, and re-running my original program with the optimized computer now runs in about 45 seconds. 😁
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[2015 Day 19 (Part 2)] I don't want specifics, but can someone point me in which direction I should work this problem?
Here is my solution in JS, which also has a long comment explaining the main iterative loop.
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[2020 - Day 15 - Part 1/2] [JS/Python] - Why is the Javascript solution so much faster?
Your solution is very similar to mine, and I too found that using an Array of a set size was way faster than an ordinary Object. I believe it has to resizing the array / object.
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2020 Day 13 Solutions
Main code for part two here, with comments, and full code for all parts found here.
aoc2021
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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?
AlgorithmProblems - Solutions to Algorithm Problems :chart_with_upwards_trend: :neckbeard:
adventofcode - Advent of Code solutions of 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 and 2023 in Scala
adventOfCode - Solutions to the 'Advent of Code' (http://adventofcode.com) programming challenges in Elm
AoC - my personal repo for the advent of code yearly challenge
adventofcode - Advent of code solution programs.
adventofcode - Advent of Code challenge solutions
adventofcode - Advent of Code solutions 2015-2023
roast - 🦋 Raku test suite
advent-of-code - Advent of code solutions
advent-2021 - [Moved to: https://github.com/Crazytieguy/advent-of-code]
aoc2017apl - Advent of Code 2017 solutions in APL
advent-of-code-go - All 8 years of adventofcode.com solutions in Go/Golang; 2015 2016 2017 2018 2019 2020 2021 2022