feat: solve 01/2024 part 1

readme.md

@@ -1,4 +1,5 @@
 # How to run
+
 * `cargo run -- -d1 -y2024 solve` - solve puzzle for a given day and year
 * `cargo run -- -d1 -y2024 solve -a1` - solve puzzle for a given day and year and submit answer for part 1 to AoC server
 * `cargo run -- -d1 -y2024 input` - download and save input for given puzzle
@@ -8,9 +9,9 @@
 
 # 2024
 
-| Day | Solved | Part 1 time (ms) | Part 2 time (ms) |
-|-----|:------:|-----------------:|-----------------:|
-|     |        |                  |                  |
+| Day                                                           | Solved | Part 1 time (ms) | Part 2 time (ms) |
+|---------------------------------------------------------------|:------:|-----------------:|-----------------:|
+| [Day 1: Historian Hysteria ](src/solutions/year2024/day01.rs) |   ⭐    |            0.221 |                  |
 
 # 2023
 

src/solutions/year2024/day01.rs

@@ -3,8 +3,26 @@ use crate::solutions::Solution;
 pub struct Day01;
 
 impl Solution for Day01 {
-    fn part_one(&self, _input: &str) -> String {
-        String::new()
+    fn part_one(&self, input: &str) -> String {
+        let (mut left, mut right): (Vec<i32>, Vec<i32>) = input
+            .lines()
+            .map(|line| {
+                let mut split = line.split_terminator("   ");
+                (
+                    split.next().unwrap().parse::<i32>().unwrap(),
+                    split.next().unwrap().parse::<i32>().unwrap(),
+                )
+            })
+            .unzip();
+
+        left.sort_unstable();
+        right.sort_unstable();
+
+        left.iter()
+            .zip(right.iter())
+            .map(|(a, b)| (a - b).abs())
+            .sum::<i32>()
+            .to_string()
     }
 
     fn part_two(&self, _input: &str) -> String {
@@ -17,10 +35,15 @@ mod tests {
     use crate::solutions::year2024::day01::Day01;
     use crate::solutions::Solution;
 
-    const EXAMPLE: &str = "";
+    const EXAMPLE: &str = r#"3   4
+4   3
+2   5
+1   3
+3   9
+3   3"#;
 
     #[test]
     fn part_one_example_test() {
-        assert_eq!("", Day01.part_one(EXAMPLE));
+        assert_eq!("11", Day01.part_one(EXAMPLE));
     }
 }