aoc2021 VS advent-of-code-kotlin

I've been doing similar (in three langs, though Ive fallen behind on go and rust over the past few days) -- https://github.com/A-UNDERSCORE-D/aoc2021/blob/main/aoc/go/util/slice.go is most of my generic go fun, lots of implementations of higher order functions and nice wrappers

Python source

As usual, first implementation. Actually started by doing sum(range(1, steps+1)), and after solving remembered that theres a math thing for that (sum(0..n) = n * (n + 1) / 2). Nothing super fancy other than that. Code Finally starting to see speedup from pypy. That JIT is amazing but has its costs.

https://github.com/A-UNDERSCORE-D/aoc2021/blob/main/aoc/go/six/06.go -- Nothing super fancy. Nice ability to pick arrays over slices here though. Probably contributes a bit of speedup.

Kotlin solution (part 1 and part 2 merged)

Kotlin solution, probably not the most efficient but does the job.

Kotlin solution for day 7, can be done fairly concisely:

Kotlin solution using a fish counter map:

Day 3 — a few key concepts used are: extensions for example on List type higher-order functions aka a function which takes other functions as parameters

Kotlin solution, fairly concise with minimal maths involved.

Nice! here is my solution also in Kotlin

Kotlin solution for Day 4, leverages OOO a lot.

Kotlin solution for day 3, not the most concise nor most optimized but gets the job done and fairly readable.