2022 day10/rust: add solution

2022/day10/rust/Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "rust_2022_10"
+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" }

2022/day10/rust/src/main.rs

@@ -0,0 +1,69 @@
+#![warn(clippy::pedantic)]
+
+use std::{
+    io::{stdin, Read},
+    str::FromStr,
+};
+
+use aoc::*;
+
+enum Instruction {
+    Noop,
+    Addx(i32),
+}
+
+impl FromStr for Instruction {
+    type Err = ();
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        let mut args = s.split_whitespace();
+        match args.next().unwrap() {
+            "noop" => Ok(Self::Noop),
+            "addx" => {
+                let i = args.next().unwrap().parse().unwrap();
+                Ok(Self::Addx(i))
+            }
+            _ => Err(()),
+        }
+    }
+}
+
+fn main() {
+    let mut data = String::new();
+    stdin().read_to_string(&mut data).unwrap();
+
+    let values = data
+        .lines()
+        .map(|l| l.parse().unwrap())
+        .flat_map(|i: Instruction| match i {
+            Instruction::Noop => vec![0],
+            Instruction::Addx(i) => vec![0, i],
+        })
+        .scan(1, |acc, i| {
+            *acc += i;
+            Some(*acc)
+        });
+    let values = [1, 1]
+        .into_iter()
+        .chain(values)
+        .enumerate()
+        .map(|(i, x)| (i32::try_from(i).unwrap(), x));
+    let sum: i32 = values
+        .clone()
+        .skip(20)
+        .step_by(40)
+        .map(|(i, x)| i * x)
+        .sum();
+
+    let crt: Vec<_> = values
+        .skip(1)
+        .map(|(i, x)| ((i - 1) % 40 - x).abs() < 2)
+        .map(|x| if x { '#' } else { '.' })
+        .collect();
+    let (_, crt) = crt.split_last().unwrap();
+
+    println!("{:?}", sum);
+    for line in crt.chunks(40) {
+        println!("{}", line.iter().collect::<String>());
+    }
+}

Cargo.lock

@@ -531,6 +531,13 @@ dependencies = [
  "aoc",
 ]
 
+[[package]]
+name = "rust_2022_10"
+version = "0.1.0"
+dependencies = [
+ "aoc",
+]
+
 [[package]]
 name = "ryu"
 version = "1.0.11"

Cargo.toml

@@ -19,4 +19,5 @@ members = [
 	"2022/day7/rust",
 	"2022/day8/rust",
 	"2022/day9/rust",
+	"2022/day10/rust",
 ]