2023/data/day15.expected

@@ -1,2 +0,0 @@
-515210
-246762

2023/day15/rust/Cargo.toml

@@ -1,9 +0,0 @@
-[package]
-name = "rust_2023_15"
-version = "0.1.0"
-edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
-aoc = { path = "../../../common/rust" }

2023/day15/rust/src/main.rs

@@ -1,56 +0,0 @@
-#![warn(clippy::pedantic)]
-
-use std::io::{stdin, Read};
-
-fn hash(s: &str) -> u8 {
-    s.as_bytes()
-        .iter()
-        .copied()
-        .fold(0, |acc, b| acc.wrapping_add(b).wrapping_mul(17))
-}
-
-fn main() {
-    let mut input = String::new();
-    stdin().read_to_string(&mut input).unwrap();
-    let input = input.trim();
-
-    let steps = input.split(',');
-
-    println!(
-        "{}",
-        steps.clone().map(|s| { u64::from(hash(s)) }).sum::<u64>()
-    );
-
-    let mut boxes: [Vec<(&str, usize)>; 256] = std::array::from_fn(|_| Vec::new());
-
-    for step in steps {
-        let (label, focal_length) = if let Some(label) = step.strip_suffix('-') {
-            (label, None)
-        } else {
-            let (label, focal_length) = step.split_once('=').unwrap();
-            (label, Some(focal_length.parse().unwrap()))
-        };
-
-        let b = &mut boxes[usize::from(hash(label))];
-        if let Some(existing_pos) = b.iter().position(|&(l, _fl)| l == label) {
-            if let Some(fl) = focal_length {
-                b[existing_pos].1 = fl;
-            } else {
-                b.remove(existing_pos);
-            }
-        } else if let Some(fl) = focal_length {
-            b.push((label, fl));
-        }
-    }
-
-    let focal_powers = boxes.into_iter().enumerate().flat_map(|(box_num, lenses)| {
-        lenses
-            .into_iter()
-            .enumerate()
-            .map(move |(lens_num, (_label, focal_length))| {
-                (box_num + 1) * (lens_num + 1) * focal_length
-            })
-    });
-
-    println!("{}", focal_powers.sum::<usize>());
-}

Cargo.lock

@@ -695,13 +695,6 @@ dependencies = [
  "itertools 0.12.0",
 ]
 
-[[package]]
-name = "rust_2023_15"
-version = "0.1.0"
-dependencies = [
- "aoc",
-]
-
 [[package]]
 name = "rustversion"
 version = "1.0.14"

Cargo.toml

@@ -36,5 +36,4 @@ members = [
 	"2023/day8/rust",
 	"2023/day9/rust",
 	"2023/day11/rust",
-	"2023/day15/rust",
 ]