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๐ - 2023 DAY 12 SOLUTIONS -๐
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this post was submitted on 12 Dec 2023
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Advent Of Code
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An unofficial home for the advent of code community on programming.dev! Other challenges are also welcome!
Advent of Code is an annual Advent calendar of small programming puzzles for a variety of skill sets and skill levels that can be solved in any programming language you like.
Everybody Codes is another collection of programming puzzles with seasonal events.
EC 2025
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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