Add day 1 part 1

Author: Mr-Ker

input_examples/day01.txt

@@ -0,0 +1,6 @@
+3   4
+4   3
+2   5
+1   3
+3   9
+3   3

src/days.rs

@@ -0,0 +1,16 @@
+mod day01;
+
+pub fn run_day(day: u8) {
+    let mut result_part1: i64 = -1;
+    let mut result_part2: i64 = -1;
+    match day {
+        1 => {
+            let day01: day01::Day01 = day01::Day01::new(String::from("/workspaces/advent-of-code-2024/input/day01.txt"));
+            result_part1 = day01.part1();
+            result_part2 = day01.part2();
+        }
+        _ => println!("Day not implemented yet"),
+    }
+    println!("Result of part 1 is {}", result_part1);
+    println!("Result of part 2 is {}", result_part2)
+}

src/days/day01.rs

@@ -0,0 +1,61 @@
+use std::fs::read_to_string;
+
+pub struct Day01 {
+    pub input_file: String,
+    first_list: Vec<i64>,
+    second_list: Vec<i64>,
+}
+
+impl Day01 {
+    pub fn new(input_file: String) -> Day01 {
+        let mut day01: Day01 = Day01 {
+            input_file: input_file,
+            first_list: Vec::new(),
+            second_list: Vec::new(),
+        };
+        day01.open_input();
+        day01
+    }
+    fn open_input(&mut self) {
+        for line in read_to_string(self.input_file.clone()).unwrap().lines() {
+            let values: Vec<&str> = line.split_whitespace().collect();
+            self.first_list.push(values[0].parse().unwrap());
+            self.second_list.push(values[1].parse().unwrap());
+        }
+    }
+    pub fn part1(&self) -> i64 {
+        let mut sorted_first_list: Vec<i64> = self.first_list.clone();
+        let mut sorted_second_list: Vec<i64> = self.second_list.clone();
+        sorted_first_list.sort();
+        sorted_second_list.sort();
+        let mut result: i64 = 0;
+        let len = sorted_first_list.len();
+        for i in 0..len {
+            let distance: i64 = sorted_first_list[i] - sorted_second_list[i];
+            result += distance.abs();
+        }
+        result
+    }
+
+    pub fn part2(&self) -> i64 {
+        23
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn result_part1() {
+        let day01: Day01 = Day01::new(String::from("/workspaces/advent-of-code-2024/input_examples/day01.txt"));
+        let result = day01.part1();
+        assert_eq!(result, 11);
+    }
+
+    #[test]
+    fn result_part2() {
+        let day01: Day01 = Day01::new(String::from("input_examples/day01.txt"));
+        assert_eq!(day01.part2(), 23);
+    }
+}

src/main.rs

@@ -3,14 +3,13 @@ use clap::Parser;
 #[derive(Parser, Debug)]
 #[command(version, about, long_about = None)]
 struct Args {
-    #[arg(short, long, default_value_t = String::from("input_examples"))]
-    input_folder: String,
     #[arg(short, long, default_value_t = 1)]
     day: u8,
 }
 
+mod days;
+
 fn main() {
     let args = Args::parse();
-
-    println!("Running day {} with input folder <{}>!", args.day, args.input_folder);
+    days::run_day(args.day)
 }