AdventOfCode2020
Solutions to all 25 AoC 2020 problems in Rust :christmas_tree: (by AxlLind)
aoc2021
Advent of Code 2021 - my answers (by ephemient)
Our great sponsors
AdventOfCode2020 | aoc2021 | |
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23 | 32 | |
29 | 26 | |
- | - | |
2.6 | 0.0 | |
4 months ago | about 1 year ago | |
Rust | Kotlin | |
MIT License | - |
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.
AdventOfCode2020
Posts with mentions or reviews of AdventOfCode2020.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2022-11-25.
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I cannot be the one that thinks this: notice the gaps between each problem, does this mean we'll descend the islands later on?
AoC 2020 was like that too.
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[2023 day 3 and 4] Day 4 is quite a bit higher than day 3. Do you think we will be jumping around like 2020, or will there just be a gap?
As a reminder, https://adventofcode.com/2020 started jumping at day 8
- Broken days order in 2020 calendar?
- Aoe2 datasets
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Zig seems great but it is still in its infancy.
I learned Zig first from the official guide at https://ziglang.org/learn/getting-started/, then from https://ziglearn.org/. I also used Zig to go through https://adventofcode.com/2020, which more about solving given tasks. At certain point you will be ready to read source code of Zig's std library in place for documentation.
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What is a good way to learn .net?
Go through the AdventOfCode in C# - it will show you what you are missing when it comes to data types and algorithms.
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[2021 Day 1-25][Rust] Solutions to all of this year's problems in terse and clean Rust
2020 in Rust
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-🎄- 2021 Day 23 Solutions -🎄-
Link to full solution
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-🎄- 2021 Day 19 Solutions -🎄-
Phew, almost 2 hours of intense coding. This was an incredibly difficult day. Got flashbacks to day 20 of last year.
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Advent of Code (AoC) Day One
This is the seventh year puzzles, if you want to check out previous years take a look at: 2015, 2016, 2017, 2018, 2019, 2020
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 AdventOfCode2020 and aoc2021 you can also consider the following projects:
tour_of_rust - A tour of rust's language features
adventofcode - Advent of Code solutions of 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 and 2023 in Scala
adventofcode.sh - Advent of Code 2020 and 2015, done in bash. Because why not?
AoC - my personal repo for the advent of code yearly challenge
advent-of-code-rust - My solutions to Advent Of Code
adventofcode - Advent of Code challenge solutions
awesome-zig
roast - 🦋 Raku test suite
aoc2021 - My solutions for the 2021 Advent of Code
advent-2021 - [Moved to: https://github.com/Crazytieguy/advent-of-code]
easy_rust - Rust explained using easy English
advent-of-code-go - All 8 years of adventofcode.com solutions in Go/Golang; 2015 2016 2017 2018 2019 2020 2021 2022
AdventOfCode2020 vs tour_of_rust
aoc2021 vs adventofcode
AdventOfCode2020 vs adventofcode.sh
aoc2021 vs AoC
AdventOfCode2020 vs advent-of-code-rust
aoc2021 vs adventofcode
AdventOfCode2020 vs awesome-zig
aoc2021 vs roast
AdventOfCode2020 vs aoc2021
aoc2021 vs advent-2021
AdventOfCode2020 vs easy_rust
aoc2021 vs advent-of-code-go