advent-of-code-next VS Advent-of-Code

My solution is also written in (immutable) Typescript.

[Source Code](https://github.com/MartinSeeler/advent-of-code-next/blob/main/puzzles/09/solution.ts) | [Run Online](https://advent-of-code-next.vercel.app/day-09-rope-bridge)

Source Code | View Online

Thanks! Feel free to watch my Github Repo if you want to be notified ;-)

Swift. I tried to use GameplayKit's pathfinding, but I got fed up with it being in Objective-C and not working with subtypes properly. shortestPathSources is just an implementation of Dijkstra that works on matrices.

Swift.

Swift. Algorithms had me covered for Part 2, but I had to make something for Part 1 that would allow for getting the elements of a Sequence based on sorted offsets, without having to start from the beginning each time.

I recommend SIMD2—it can save you a lot of reinventing the 2D wheel!

Swift. We don't have good types for this. 🤮

Swift. containsOnlyUniqueElements is not in the standard library; it relies on this Set initializer.

Works grood.

No, I edited my comment. I was wrong in thinking that there was a proper overload. The one I'm using is just from `extension Collection where Self.Element : Equatable` in the new _StringProcessing section for Regex. It gives the correct result, but it's not as fast as it could be. (https://stackoverflow.com/questions/64066681/check-if-one-range-is-within-another)

Swift, using some helpers for `CaseIterable`.