advent-of-code-kotlin VS aoc2021

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

Nice! here is my solution also in Kotlin

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

Kotlin, solution for part 1 and 2 — not super concise but a few cool concepts if you're learning the language.

You can find the source code for my solution here.

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.