softrabbit / aoc2020

Advent of Code 2020, 50 programming puzzles in 25 languages

aoc2020's Issues

Part 2 of Day 13 is way too slow

I left the code running all day and got lucky, the number I was looking for was in the first 1/15000th part of a 64-bit integer range. Nevertheless, a multi-hour runtime means I should figure out a better solution.

aoc2020/13/solution.scala

Line 49 in 29148b7

// Solution, part 2

Rewrite the Java stuff

Should really revisit the Java in day 7, it's probably wrong in so many ways.

Day 8, Perl algorithm could be improved

The algorithm for running the simple program after patching should be amended to remember state up to the point where the patch is being made and only run from there on.

And those Perl references and data structures sure need some checking and refinement, too.

Day 16, Go code should use lists

It was a bit late that I discovered that Go actually has a list type in the standard library. Googling for stuff left that pretty unknown to me, so I just did slices all the way. Should revisit and refactor to lists at some point. Other refactoring wouldn't hurt either.

Get back on track!

Should do the remaining days before next round starts on 2021-12-01.

Day 12/Clojure needs some attention

There's got to be a better way than this. Not that I'm sure variables are too good. either.

aoc2020/12/solution.clj

Line 54 in 8ce8094

(defn rot [x y wpx wpy d]