completed day 3, ready for day 4.

src/day03/part1.rs

@@ -0,0 +1,15 @@
+use crate::utilities::*;
+
+pub fn part1() -> usize {
+    0
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_part1() {
+        assert_eq!(part1(), 0);
+    }
+}

src/day03/part2.rs

@@ -0,0 +1,15 @@
+use crate::utilities::*;
+
+pub fn part2() -> usize {
+    0
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_part2() {
+        assert_eq!(part2(), 0);
+    }
+}

src/day03/solve.rs

@@ -0,0 +1,14 @@
+mod part1;
+mod part2;
+mod utilities;
+
+fn main() {
+    let _input = include_str!("./input.txt");
+    let _structured_input = utilities::parse(_input);
+
+    println!("Part One");
+    println!("Result: {}", part1::part1());
+
+    println!("Part Two");
+    println!("Result: {}", part2::part2());
+}

src/day03/utilities.rs

@@ -0,0 +1,17 @@
+pub fn parse(input: &str) -> usize {
+    println!("{}", input);
+    0
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_parse() {
+        let input =
+"test"
+;
+        assert_eq!(parse(input), 0);
+    }
+}