initial commit

.gitignore

+# rust
+target/

01/.vscode/launch.json

+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "lldb",
+            "request": "launch",
+            "name": "Debug executable 'aoc'",
+            "cargo": {
+                "args": [
+                    "build",
+                    "--bin=aoc",
+                    "--package=aoc"
+                ],
+                "filter": {
+                    "name": "aoc",
+                    "kind": "bin"
+                }
+            },
+            "args": [],
+            "cwd": "${workspaceFolder}"
+        },
+        {
+            "type": "lldb",
+            "request": "launch",
+            "name": "Debug unit tests in executable 'aoc'",
+            "cargo": {
+                "args": [
+                    "test",
+                    "--no-run",
+                    "--bin=aoc",
+                    "--package=aoc"
+                ],
+                "filter": {
+                    "name": "aoc",
+                    "kind": "bin"
+                }
+            },
+            "args": [],
+            "cwd": "${workspaceFolder}"
+        }
+    ]
+}
\ No newline at end of file

01/Cargo.lock

+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "anyhow"
+version = "1.0.75"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4668cab20f66d8d020e1fbc0ebe47217433c1b6c8f2040faf858554e394ace6"
+
+[[package]]
+name = "aoc"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+]

01/Cargo.toml

+[package]
+name = "aoc"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+anyhow = "1.0.75"

01/src/main.rs

+use std::{collections::HashMap, fs};
+
+use anyhow::Result;
+
+fn reverse_string(text: &str) -> String {
+    text.chars().rev().collect()
+}
+
+fn remove_art(line: &str) -> (u32, u32) {
+    let patterns = [
+        ["one", "1"],
+        ["two", "2"],
+        ["three", "3"],
+        ["four", "4"],
+        ["five", "5"],
+        ["six", "6"],
+        ["seven", "7"],
+        ["eight", "8"],
+        ["nine", "9"],
+    ];
+
+    let a = patterns
+        .iter()
+        .filter_map(|v| {
+            if let Some(found) = v.iter().filter_map(|v| line.find(v)).min() {
+                Some((v[1].parse::<u32>().unwrap(), found))
+            } else {
+                None
+            }
+        })
+        .min_by(|x, y| x.1.cmp(&y.1))
+        .map(|v| v.0.to_owned())
+        .unwrap();
+
+    let b = patterns
+        .iter()
+        .filter_map(|v| {
+            if let Some(found) = v
+                .iter()
+                .filter_map(|v| reverse_string(&line).find(&reverse_string(v)))
+                .min()
+            {
+                Some((v[1].parse::<u32>().unwrap(), found))
+            } else {
+                None
+            }
+        })
+        .min_by(|x, y| x.1.cmp(&y.1))
+        .map(|v| v.0.to_owned())
+        .unwrap();
+
+    (a, b)
+}
+
+fn main() -> Result<()> {
+    let data = fs::read_to_string("data.txt")?;
+    let result_a: u32 = data
+        .lines()
+        .map(|v| {
+            let a = v.chars().find(|v| v.is_ascii_digit()).unwrap();
+            let b = v.chars().rev().find(|v| v.is_ascii_digit()).unwrap();
+
+            format!("{a}{b}").parse::<u32>().unwrap()
+        })
+        .sum();
+
+    println!("{result_a}");
+
+    let result_b: u32 = data
+        .lines()
+        .map(|v| {
+            let (a, b) = remove_art(v);
+            format!("{a}{b}").parse::<u32>().unwrap()
+        })
+        .sum();
+
+    println!("{result_b}");
+
+    Ok(())
+}