advent-of-code VS advent-of-code-kotlin

For a full write-up, see this repo, and for a non-annotated solution, see:

Otherwise, the main way I solved this was with a flat list of tokens rather than a truly nested structure. This was very similar to last year's Day 18, which I also solved in a similar manner.

Code can be found in this repo.

code

First 2D one! Got to reuse my InfiniteGrid class, which made this much easier.

Mine only took about 2 minutes when I originally recorded it. I've since added some optimizations to my Intcode computer, and re-running my original program with the optimized computer now runs in about 45 seconds. 😁

Here is my solution in JS, which also has a long comment explaining the main iterative loop.

Your solution is very similar to mine, and I too found that using an Array of a set size was way faster than an ordinary Object. I believe it has to resizing the array / object.

Main code for part two here, with comments, and full code for all parts found here.

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.