advent-of-code

https://adventofcode.com/ solutions in zig for fun.

needs latest zig master.

• zig build run runs all days from 2018, 2019, 2020, 2021
  older years not included in the build script. (and may not even compile with latest zig version)

• zib build run2020 for a specific year

• manually run a single day:

  • for 2021:
    zig run 2021/day03.zig --pkg-begin "tools" "common/tools_v2.zig" --pkg-end
  • older years:
    zig run 2018/day10.zig --pkg-begin "tools" "common/tools.zig" --pkg-end

• make an exe with all days and input embeded:\

  • zig build-exe 2021/alldays.zig --pkg-begin "tools" "common/tools_v2.zig" --pkg-end -OReleaseFast (runtime < 0.5s)
  • zig build-exe 2020/alldays.zig --pkg-begin "tools" "common/tools.zig" --pkg-end -OReleaseFast (runtime < 1 second)
  • zig build-exe 2019/alldays.zig --pkg-begin "tools" "common/tools.zig" --pkg-end -OReleaseFast (runtime < 5 second)

• 2019 intcode bench: (best year by far! )
  zig run 2019/intcode_bench.zig --pkg-begin "tools" "common/tools.zig" --pkg-end -OReleaseFast

benching 'sum-of-primes'...
...ok. 15ms
benching 'ackermann'...
...ok. 9ms
benching 'isqrt'...
...ok. 36µs
benching 'divmod'...
...ok. 39µs
benching 'factor1'...
...ok. 36ms
benching 'factor2'...
...ok. 94ms