advent-of-code-kotlin-2021
aoc2021
advent-of-code-kotlin-2021 | aoc2021 | |
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5 | 32 | |
1 | 26 | |
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0.0 | 0.0 | |
over 2 years ago | about 1 year ago | |
Kotlin | Kotlin | |
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advent-of-code-kotlin-2021
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-🎄- 2021 Day 18 Solutions -🎄-
Kotlin - I went with solving it in place ( sort of, I had to replace [ ] with ( ) because of the way I stored the numbers ). My first day attempt of it I tried to do it with binary tree, but I'm just not familiar enough with the subject to do it that way and I failed miserably ( I'm studying the subject now, as I think it will be helpful with future code challenges ). So my next day attempt I figured I'd try solving it in place and everything worked out really well ( solved it yesterday, but wanted today to review my code before submitting it ).
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-🎄- 2021 Day 15 Solutions -🎄-
Kotlin - it's probably a bit of a memory hog compared to other solutions, but I didn't want to have to deal with index numbers anymore than I had to.
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-🎄- 2021 Day 12 Solutions -🎄-
Kotlin - I didn't finish it until three in the morning and just now got around to cleaning up the code. I really struggled with part 2 ( path finding was one of my least favorite subject in computer science ). Though it probably wouldn't have taken so long if I had just scrapped part 2 when it became a mess, instead of wasting time trying to fix it.
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-🎄- 2021 Day 10 Solutions -🎄-
Kotlin solution. I converted them to numbers ( like round brackets would be 1 and -1 ), and then just used the numbers to work with.
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[2021 Day 7] I'm just happy my gigantic list comprehension worked
I think my solution is a binary search. I originally went with a brute force implementation, but when I started the second part it occurred to me that I could do a binary search that would reduce the number of indexes I had to check the cost of moving to.
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
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advent-2021 - [Moved to: https://github.com/Crazytieguy/advent-of-code]
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