advent-2021-kotlin VS Advent_of_Code

Once I finally understood how the examples worked with subpackets, I was able to come up with what I think is a nice clean solution. I ended up using an Iterator that got passed around to various sealed types that would parse themselves out. I defined several extension functions on Iterator to make things easier to read.

Kotlin -> [Blog/Commentary] - [Code] - [All 2021 Solutions]

Then I came across this Python solution, which was quite short and concise. So I implemented this solution in F#, but I had to use a mutable. I couldn't figure out how to get rid of this mutable. Is there a way, or is this solution not a F# one?

My solutution in Python. Using itertools.cycle for part 1 and functools.cache for part 2.

My solution in Python. This one was fun! Thanks for the many samples and the detailed description.

My solution in Python. At first I was really struggling but then I luckily found some A* pathfinding code I wrote many years ago.

My Solution in Python. This one is pretty compact and amazingly fast thanks to collections.Counter and functools.lru_cache. Here is the function for counting the elements:

My solution in Python. A simple search without recursion.

My solution in Python. It's astonishing how much trouble I had today despite my experience with cellular automata.Lots of off-by-one errors and problems with synchronicity.

My solution in Python. I realised that I could use the median for part 1 and mean for part 2 like some others here.

My solution in Python. Today was fun and very easy. I immediately came to the same conclusion as others here to simply count the number of fish per age group.

My solution in Python. Now it starts to get interesting. I need to remind myself to use collections and itertools more often.