advent-of-code/2021

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Parnic 84c7f424ba

>2x speedup for part 2

Based on a suggestion from @tocchan I converted the total risk map from a Dictionary to an array and things really took off (125ms to 50ms on my machine in Release). And that's with a sub-optimal fill/memset of the array to int.MaxValue (which I couldn't find a better way to do without diving into `unsafe` territory), though that step only takes about 500us with this method anyway, so it's hardly the worst part.

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Day 04 in javascript

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Day 15 solution

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Enable running all days at once

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>2x speedup for part 2

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.gitignore

Day 1 in Go

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advent-of-code-2021.csproj

Day 15 solution

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advent-of-code-2021.sln

Day 2 solution in C#

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Cargo.lock

Day 1 solution in Rust

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Cargo.toml

Day 1 solution in Rust

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go.mod

Day 1 in Go

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main.go

Day 1 in Go

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README.md

Add readme

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README.md

Advent of Code 2021

My solutions to Advent of Code 2021.