#1 Created base repo ready to start solving some problems.

Cargo.toml

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+[package]
+name = "OxidisedLeetCode"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+tokio = { version = "1.38.0", features = ["full"] }

src/main.rs

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+mod solutions;
+mod utils;
+
+use std::{error::Error, time::SystemTime};
+
+use solutions::*;
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn Error>> {
+    let problems: Vec<Box<dyn Solution + Sync>> = vec![Box::new(xx::XX {})];
+
+    let mut t = vec![];
+
+    // Run through and generate solutions
+    for problem in problems.leak() {
+        let task = tokio::spawn(async { problem.run().unwrap() });
+        t.push(task);
+    }
+
+    let start_time = SystemTime::now();
+
+    let mut problems = vec![];
+    for thread in t {
+        problems.push(thread.await?);
+    }
+
+    for problem in problems {
+        println!("========= Problem {} ==========", problem.id);
+        println!("Test1 Result: {}", problem.test1);
+        println!("Test2 Result: {}", problem.test2);
+        println!("Test3 Result: {}", problem.test3);
+        println!("========= {}ms =========\n", problem.time.as_millis());
+    }
+
+    println!(
+        "Ran LeetCode in {}ms",
+        SystemTime::now().duration_since(start_time)?.as_millis()
+    );
+    Ok(())
+}

src/solutions/mod.rs

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+use crate::utils::{self, get_input};
+use std::{error::Error, fmt::Display, time::SystemTime};
+
+pub mod xx;
+
+pub trait Solution {
+    // Run and return the solution to the problem
+    fn solution(&self, input: &mut Vec<String>) -> Result<Box<dyn Display + Sync>, Box<dyn Error>>;
+
+    // Get the id of the problem in question
+    fn get_id(&self) -> u8;
+
+    fn run(&self) -> Result<Run, Box<dyn std::error::Error>> {
+        let start_time = SystemTime::now();
+
+        let run = Run {
+            test1: self.solution(get_input(self.get_id(), utils::InputType::Test1)?.as_mut())?,
+            test2: self.solution(get_input(self.get_id(), utils::InputType::Test2)?.as_mut())?,
+            test3: self.solution(get_input(self.get_id(), utils::InputType::Test3)?.as_mut())?,
+            id: self.get_id(),
+            time: SystemTime::now().duration_since(start_time)?,
+        };
+        Ok(run)
+    }
+}
+
+pub struct Run {
+    pub test1: Box<dyn Display + Sync>,
+    pub test2: Box<dyn Display + Sync>,
+    pub test3: Box<dyn Display + Sync>,
+    pub id: u8,
+    pub time: core::time::Duration,
+}
+
+unsafe impl Send for Run {}

src/solutions/xx.rs

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+use super::Solution;
+
+pub struct XX {}
+
+impl Solution for XX {
+    fn solution(
+        &self,
+        _input: &mut Vec<String>,
+    ) -> Result<Box<dyn std::fmt::Display + Sync>, Box<dyn std::error::Error>> {
+        Ok(Box::new("Ready"))
+    }
+
+    fn get_id(&self) -> u8 {
+        0
+    }
+}
+
+impl XX {}
+
+/// Test from puzzle input
+#[cfg(test)]
+mod test {
+    use super::*;
+    use crate::*;
+
+    #[test]
+    fn test1() {
+        let solution = xx::XX {};
+
+        //Complete the Challenge
+        let answer = solution
+            .solution(
+                utils::get_input(solution.get_id(), utils::InputType::Test1)
+                    .unwrap()
+                    .as_mut(),
+            )
+            .unwrap()
+            .to_string();
+
+        assert_eq!(answer, "Ready");
+    }
+
+    #[test]
+    fn test2() {
+        let solution = xx::XX {};
+
+        //Complete the Challenge
+        let answer = solution
+            .solution(
+                utils::get_input(solution.get_id(), utils::InputType::Test2)
+                    .unwrap()
+                    .as_mut(),
+            )
+            .unwrap()
+            .to_string();
+
+        assert_eq!(answer, "Ready");
+    }
+}

src/utils.rs

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+use std::{
+    error::Error,
+    fs::File,
+    io::{prelude::*, BufReader},
+};
+
+/// Enum used to specify input
+#[allow(unused)]
+pub enum InputType {
+    Test1,
+    Test2,
+    Test3,
+}
+
+/// Function to get the input for a given leetcode problem
+pub fn get_input(id: u8, input: InputType) -> Result<Vec<String>, Box<dyn Error>> {
+    // Find Input File Name
+    let file_name = match input {
+        InputType::Test1 => format!("src/input/{}_test1", id),
+        InputType::Test2 => format!("src/input/{}_test2", id),
+        InputType::Test3 => format!("src/input/{}_test3", id),
+    };
+
+    // Read file into buffer
+    let file = File::open(file_name)?;
+    let reader = BufReader::new(file);
+
+    // Convert itterate buffer and return string vec
+    let data = reader
+        .lines()
+        .map(|s| s.unwrap_or(String::from("")))
+        .collect();
+
+    Ok(data)
+}
+
+//
+// Below this line are a series of utils that can be re-used
+// for any of the problems identified
+#[allow(unused)]
+//
+///=========================================================
+//
+
+pub fn lcm(first: u64, second: u64) -> u64 {
+    first * second / gcd(first, second)
+}
+
+pub fn gcd(first: u64, second: u64) -> u64 {
+    let mut max = first;
+    let mut min = second;
+    if min > max {
+        std::mem::swap(&mut max, &mut min);
+    }
+
+    loop {
+        let res = max % min;
+        if res == 0 {
+            return min;
+        }
+
+        max = min;
+        min = res;
+    }
+}