Started day 3

src/day3/mod.rs

@@ -0,0 +1,50 @@
+use std::{fs::File, io::Read};
+
+fn read_file(file: &str) -> String {
+    let mut directory = "/home/jason/Programming/Rust/aoc2025/src/day3/".to_owned();
+    directory.push_str(file);
+    let mut handle = File::open(directory).unwrap();
+    let mut file = String::new();
+    handle.read_to_string(&mut file).unwrap();
+    file
+}
+
+pub fn part_1(file: &str) -> u64{
+    let data = read_file(file);
+
+    let mut batteries: Vec<Vec<u8>> = Vec::new();
+
+    for row in data.lines() {
+        let mut rowvec = Vec::new();
+        for c in row.chars() {
+            rowvec.push(c.to_digit(10).unwrap() as u8);
+        }
+        batteries.push(rowvec);
+    }
+
+    for bank in batteries {
+        let mut first_digit = 0;
+        let mut second_digit = 0;
+        let mut bank_iter = bank.iter().peekable();
+
+        loop {
+            let current = bank_iter.next().unwrap();
+            let next = bank_iter.peek();
+            match next {
+                Some(_) => {},
+                None => {},
+            }
+        }
+    }
+    0
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn day_three_part_1() {
+        assert_eq!(part_1("test.txt"), 357);
+    }
+}

src/main.rs

@@ -1,3 +1,4 @@
+mod day3;
 mod day6;
 mod day7;