๐ - 2023 DAY 12 SOLUTIONS -๐
(programming.dev)
submitted
11 months ago* (last edited 11 months ago)
by
Ategon@programming.dev
to
c/advent_of_code@programming.dev
Day 12: Hot Springs
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C
That was something! I quickly settled on the main approach for part 1 but it took some unit testing to get it all right. Then part 2 had me stumped for a bit. It was clear some kind of pruning was necessary, possibly with memoization.
Hashmaps are possible but annoying with C so I was happy to realise that, for my implementation,
(num chars, num runs)is a suitable key within the context of a single recursive search. That space is small enough to index with an array ๐https://github.com/sjmulder/aoc/tree/master/2023/c/day12.c