aoc2021
Advent of Code 2021 (by ednl)
Advent-of-code
My solutions of adventofcode.com (by MichalMarsalek)
Our great sponsors
aoc2021 | Advent-of-code | |
---|---|---|
9 | 25 | |
1 | 27 | |
- | - | |
0.0 | 0.0 | |
9 months ago | over 1 year ago | |
C | Nim | |
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.
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 2022-09-18.
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[2021 day 6] What's you're fastest solution?
This in C runs in 215 us on a Pi 4 with the cpu in performance mode: https://github.com/ednl/aoc2021/blob/main/day06.c
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[DAY 6] C# solution with commentary
I took a few hints from the solutions thread and made this in C which executes in 0.4 milliseconds on a Raspberry Pi 4: https://github.com/ednl/aoc2021/blob/main/day06.c
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[2021 Day 18] [C++] Overcomplicated solution after a lot of grief and hair loss.
Good outcome. I'm not well versed in C++ so I can't say much about it. For my solution in C, I figured that a full-blown tree was too much work and also not really needed if I kept track of the level myself, because everything is always in the same order left to right, just expanding and contracting. So I used a linked list and a SF number became an array of SF digits where each digit is a struct { left,right,level,value }. I guess the trickiest bit was to do the accountancy of keeping everything linked correctly when exploding and splitting.
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[2021] What did you learn or take away from AoC 2021?
The constant time thing is counting fish in an age histogram mod 9, right? I think that idea floated around the solution thread. I am no longer sure if I saw it there first or came up with it myself..... but here's my implementation in C: https://github.com/ednl/aoc2021/blob/main/day06.c
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-🎄- 2021 Day 14 Solutions -🎄-
Added lots of comments as explanation of the ideas and the code: https://github.com/ednl/aoc2021/blob/main/day14.c
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-🎄- 2021 Day 6 Solutions -🎄-
Good ol' C code. Very simple program once you think of making a circular buffer from the population histogram by age bins, and simulating every day. I got stuck for a while trying to come up with a direct mathematical function which never gave me the exact number. The crux:
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-🎄- 2021 Day 4 Solutions -🎄-
C, which takes some bookkeeping but it can be fast. I didn't push for every last drop of speed but still: about 3 ms on a Raspberry Pi 4 (1.8 GHz overclock, Buster desktop, not very quiet so I picked a good run). Code with lots of comments
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 2022-12-10.
- -🎄- 2022 Day 11 Solutions -🎄-
- -🎄- 2022 Day 9 Solutions -🎄-
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-🎄- 2022 Day 6 Solutions -🎄-
Wow, almost identical to mine: https://github.com/MichalMarsalek/Advent-of-code/blob/master/2022/Nim/day6.nim
- -🎄- 2022 Day 4 Solutions -🎄-
- -🎄- 2022 Day 3 Solutions -🎄-
- -🎄- 2022 Day 2 Solutions -🎄-
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[2021] [Nim] Nim is Beautiful + All days in < 130ms
This year I was writing two sets of solutions in Nim. The first one focuses on idiomatic, nice and short and readable Nim. The other focuses purely on speed. The combined running times of the fast solutions is 130 ms. Please let me know if you have any tips on how to make my solutions more simple and/or idiomatic.
- -🎄- 2021 Day 19 Solutions -🎄-
- -🎄- 2021 Day 18 Solutions -🎄-
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-🎄- 2021 Day 15 Solutions -🎄-
Beautiful Nim! My solution is actually very similar.
What are some alternatives?
When comparing aoc2021 and Advent-of-code you can also consider the following projects:
AdventOfCode
AdventOfCode2021 - Solutions to all 25 AoC 2021 problems in Rust :crab: Less than 100 lines per day and under 1 second total execution time! :christmas_tree:
aoc-2021 - Advent of code 2021 challenges written in Rust to learn the language and get more comfortable with the it (and sometimes I just use C++)
aoc2021 - Solutions to Advent of Code 2021
Wren - The Wren Programming Language. Wren is a small, fast, class-based concurrent scripting language.
CSpydr - A static typed low-level compiled programming language inspired by Rust and C
AdventOfCode_2022_Rust
AdventOfCode2021
advent-of-code
advent-of-code - Advent Of Code Solutions
AdventOfCode2022
ride - Remote IDE for Dyalog APL
aoc2021 vs AdventOfCode
Advent-of-code vs AdventOfCode2021
aoc2021 vs aoc-2021
Advent-of-code vs aoc2021
Advent-of-code vs Wren
Advent-of-code vs CSpydr
Advent-of-code vs AdventOfCode_2022_Rust
Advent-of-code vs AdventOfCode2021
Advent-of-code vs advent-of-code
Advent-of-code vs advent-of-code
Advent-of-code vs AdventOfCode2022
Advent-of-code vs ride