advent-of-code
Advent of Code Solutions (by karjonas)
advent-of-code | AdventOfCode2021 | |
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6 | 12 | |
2 | 1 | |
- | - | |
6.6 | 2.6 | |
5 months ago | over 2 years ago | |
Rust | Perl | |
- | - |
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.
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 2021-12-21.
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-🎄- 2021 Day 22 Solutions -🎄-
Rust GitHub. My approach is to go through all cuboids and always remove their intersection with all previously added cuboids. Then, If it is a "on" cuboid it is added to the list of cuboids. This way no cuboids will overlap and I can sum all their volumes in the end.
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-🎄- 2021 Day 19 Solutions -🎄-
Rust GitHub. Kinda ugly brute force solution which runs in ~10 sec.
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-🎄- 2021 Day 18 Solutions -🎄-
Rust GitHub. This took me much longer that I care to admit. I started with a tree-based solution, tried a list, went back to tree and the back to the list again...
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-🎄- 2021 Day 6 Solutions -🎄-
Rust GitHub
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2020 Day 21 Solutions
GitHub.
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2020 Day 20 Solutions
Rust GitHub. This took a very long time to solve, and the code is not very nice looking.
AdventOfCode2021
Posts with mentions or reviews of AdventOfCode2021.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2021-12-17.
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-🎄- 2021 Day 18 Solutions -🎄-
Full program on GitHub.
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-🎄- 2021 Day 15 Solutions -🎄-
Full program including code to deal with heaps, on GitHub.
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[2021 Day 11 (Part 2)] What input takes the most steps to synchronize?
Program I used for the above results
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-🎄- 2021 Day 8 Solutions -🎄-
See my solution on GitHub.
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Day 6 Proof of Correctness
Note also that you can solve this without a complexity dependency on n. Most solutions I have seen, including mine run in time O(tD), where t is the maximum value of a timer, and D the number of generation, requiring O(t) memory. (This is assuming we can do the required arithmetic operations in constant time, and each numbers require a fixed around of memory storage; if the number of fish gets huge, throw in an additional log n in the complexities, where n is the number of fish on the final day).
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-🎄- 2021 Day 6 Solutions -🎄-
Based on my matrix exponentiation solution, here is a closed-form solution:
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How do I read today's input ? Part 1
In my Perl solution of today (I assume, you mean 2021, Day 4), I read stuff in paragraph mode ($/ = "") which makes Perl split input on 2 or more newlines.
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2021 Day #4 (Part 1) [Native Python ONLY] - Conceptual Guidance?
I considered doing that for my (Perl) solution, but given the cards are small, that seemed overkill.
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-🎄- 2021 Day 4 Solutions -🎄-
Python implementation on GitHub
What are some alternatives?
When comparing advent-of-code and AdventOfCode2021 you can also consider the following projects:
aoc2021 - My solutions for the 2021 Advent of Code
Elixir - Elixir is a dynamic, functional language for building scalable and maintainable applications
Advent-of-Code - My solutions for the Advent of Code puzzles (work in progress).
Advent-of-code - My solutions of adventofcode.com
AdventOfCode2021.jl - Advent of Code 2021 in Julia
Advent_of_Code_2021_Solutions_Java - Personal AoC/2021 Solutions in Java
adventofcode - :christmas_tree: Advent of Code (2015-2023) in C#
adventofcode - Advent of Code solutions of 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022 and 2023 in Scala
adventofcode - Solutions for problems from AdventOfCode.com
adventofcode - Advent of Code challenge solutions
aoc2021 - Advent of Code 2021
advent-of-code vs aoc2021
AdventOfCode2021 vs Elixir
advent-of-code vs Advent-of-Code
AdventOfCode2021 vs Advent-of-code
advent-of-code vs AdventOfCode2021.jl
AdventOfCode2021 vs Advent_of_Code_2021_Solutions_Java
advent-of-code vs adventofcode
AdventOfCode2021 vs adventofcode
advent-of-code vs adventofcode
AdventOfCode2021 vs adventofcode
advent-of-code vs aoc2021
AdventOfCode2021 vs adventofcode