I finished AoC 2023 in Python, but I'm rewriting it in C because it is the programming language of the future. My favourites:
- Primitive string conditional parsing, interval splitting & hashmaps.
- Dijkstra's algorithm, with custom priority queue using a min heap.
- Interval splitting.
- Network navigation with least common multiple.
- Dynamic programming.
- Cycle detection in function output.
- Shoelace formula to calculate area
