Day 01 Part 1

src/solutions/day01.rs

@@ -0,0 +1,48 @@
+use super::dayxx::Solution;
+use regex::Regex;
+
+const REG: &str = r#"[0-9]"#;
+
+pub struct Day01 {}
+
+impl Solution for Day01 {
+    fn part1(
+        &self,
+        input: &mut Vec<String>,
+    ) -> Result<Box<dyn std::fmt::Display>, Box<dyn std::error::Error>> {
+        let mut total: u32 = 0;
+        for line in input {
+            total += self.regex_get_num(line);
+        }
+
+        Ok(Box::new(total))
+    }
+
+    fn part2(
+        &self,
+        input: &mut Vec<String>,
+    ) -> Result<Box<dyn std::fmt::Display>, Box<dyn std::error::Error>> {
+        Ok(Box::new(0))
+    }
+
+    fn get_day(&self) -> u8 {
+        1
+    }
+}
+
+impl Day01 {
+    fn regex_get_num(&self, input: &mut String) -> u32 {
+        let re = Regex::new(REG).unwrap();
+
+        // Get all single digits out of string
+        let matches: Vec<u32> = re
+            .find_iter(input)
+            .map(|m| m.as_str().parse::<u32>().unwrap_or_default())
+            .collect();
+
+        let mut num: u32 = matches.first().unwrap_or(&0) * 10;
+        num += matches.last().unwrap_or(&0);
+
+        num
+    }
+}