Day 6 ~ Performant Solution?

• rusty-aoc

  5 0 10.0 Rust

  My solutions to Advents of Code in Rust

  I use itertools::Itertools which have a nice all_unique (internally, it creates a hashset and insert elements one by one unless it already contains it) but if I really wanted efficiency, I would manage my own hashset because this method is called for each character.

• advent-of-code

  1 0 10.0 Rust

  my attempt at advent of code (by Isawan)

  for my solution, I used a bitset as an auxillary data structure. The trick is that since chracters are all lower case there's only 26 of them. This means if you use a u32 where each bit is a chracter, you can just OR the slice together and count the number of bits after ORing. https://github.com/Isawan/advent-of-code/blob/master/2022/src/bin/day6-fast.rs

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