Day 01 Part 1

Cargo.toml

@@ -6,3 +6,4 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+regex = "1.10.2"

src/input/day01_test

@@ -0,0 +1,4 @@
+1abc2
+pqr3stu8vwx
+a1b2c3d4e5f
+treb7uchet

src/main.rs

@@ -1,5 +1,20 @@
 mod utils;
-
 mod solutions;
 
-fn main() {}
+use std::error::Error;
+
+use solutions::{
+    dayxx::Solution, 
+    day01
+};
+
+use crate::utils::get_input;
+
+fn main() -> Result<(), Box<dyn Error>>{
+    // Day 1
+    let day01 = day01::Day01{};
+    println!("Day01 Part1 Test: {}", day01.part1(get_input(day01.get_day(), utils::InputType::Test)?.as_mut())?);
+    println!("Day01 Part1 Result: {}", day01.part1(get_input(day01.get_day(), utils::InputType::Actual)?.as_mut())?);
+
+    Ok(())
+}

src/solutions/day01.rs

@@ -0,0 +1,48 @@
+use super::dayxx::Solution;
+use regex::Regex;
+
+const REG: &str = r#"[0-9]"#;
+
+pub struct Day01 {}
+
+impl Solution for Day01 {
+    fn part1(
+        &self,
+        input: &mut Vec<String>,
+    ) -> Result<Box<dyn std::fmt::Display>, Box<dyn std::error::Error>> {
+        let mut total: u32 = 0;
+        for line in input {
+            total += self.regex_get_num(line);
+        }
+
+        Ok(Box::new(total))
+    }
+
+    fn part2(
+        &self,
+        input: &mut Vec<String>,
+    ) -> Result<Box<dyn std::fmt::Display>, Box<dyn std::error::Error>> {
+        Ok(Box::new(0))
+    }
+
+    fn get_day(&self) -> u8 {
+        1
+    }
+}
+
+impl Day01 {
+    fn regex_get_num(&self, input: &mut String) -> u32 {
+        let re = Regex::new(REG).unwrap();
+
+        // Get all single digits out of string
+        let matches: Vec<u32> = re
+            .find_iter(input)
+            .map(|m| m.as_str().parse::<u32>().unwrap_or_default())
+            .collect();
+
+        let mut num: u32 = matches.first().unwrap_or(&0) * 10;
+        num += matches.last().unwrap_or(&0);
+
+        num
+    }
+}

src/utils.rs

@@ -14,8 +14,8 @@ pub enum InputType {
 pub fn get_input(day: u8, input: InputType) -> Result<Vec<String>, Box<dyn Error>> {
     // Find Input File Name
     let file_name = match input {
-        InputType::Test => format!("src/input/day{:02}_test.txt", day),
-        InputType::Actual => format!("src/input/day{:02}.txt", day),
+        InputType::Test => format!("src/input/day{:02}_test", day),
+        InputType::Actual => format!("src/input/day{:02}", day),
     };
 
     // Read file into buffer