Advent of Code is an 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. I challenge myself each year to do as many as I can before Christmas hits.
Note: I prefer a more debuggable approach in my solutions. Even when it isn't (strictly) necessary, I try to store intermediate results between steps and solve the puzzles by aggregating over the results.
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Find the 2022 solutions here.
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Find the 2023 solutions here.
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Find the 2024 solutions here.
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Find the 2025 solutions here.
For more info, visit the official website of Advent of Code. Many thanks to Eric Wastl, the creator of Advent of Code, and many thanks to his awesome team of testers for making every year fun!