aoc2022

Advent of Code 2022 solutions in Rust
git clone git://code.mfashby.net:/aoc2022
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day1.rs (676B)

      1 struct Foo {
      2     acc: u32,
      3     max: [u32;3],
      4 }
      5 
      6 pub fn run(input: String) {
      7     let init = Foo{
      8         acc: 0,
      9         max: [0,0,0],
     10     };
     11     let res = input.lines().fold(init, |foo, line| {
     12         return if line.is_empty() {
     13             let mut arr = [foo.acc, foo.max[0], foo.max[1], foo.max[2]];
     14             arr.sort();
     15             Foo {
     16                 acc: 0,
     17                 max: [arr[1], arr[2], arr[3]],
     18             }
     19         } else {
     20             Foo {
     21                 acc: foo.acc + line.parse::<u32>().expect("input line wasn't a u32!"),
     22                 max: foo.max,
     23             }
     24         }
     25     });
     26     println!("day 1: {}", res.max.into_iter().sum::<u32>());
     27 }