Day 1 initial finish

day-1/src/part2.rs

@@ -0,0 +1,57 @@
+
+pub fn part2(input: &str) -> String {
+    let values = input.lines().map(parse_line).collect::<Vec<Vec<u32>>>();
+    println!("{values:?}");
+    values.iter().map(|v| v.first().unwrap() * 10 + v.last().unwrap() ).sum::<u32>().to_string()
+}
+
+fn parse_line(line: &str) -> Vec<u32> {
+    (0..line.len()).filter_map(|index| {
+        let reduced_line = &line[index..];
+        let result = if reduced_line.starts_with("one") {
+            Some(1)
+        } else if reduced_line.starts_with("two"){
+            Some(2)
+        } else if reduced_line.starts_with("three"){
+            Some(3)
+        } else if reduced_line.starts_with("four"){
+            Some(4)
+        } else if reduced_line.starts_with("five"){
+            Some(5)
+        } else if reduced_line.starts_with("six"){
+            Some(6)
+        } else if reduced_line.starts_with("seven"){
+            Some(7)
+        } else if reduced_line.starts_with("eight"){
+            Some(8)
+        } else if reduced_line.starts_with("nine"){
+            Some(9)
+        } else if reduced_line.starts_with("zero"){
+            Some(0)
+        } else {
+            reduced_line.chars().next().unwrap().to_digit(10)
+        };
+
+        result
+
+    }).collect()
+}
+
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    const INPUT: &str = "two1nine
+eightwothree
+abcone2threexyz
+xtwone3four
+4nineeightseven2
+zoneight234
+7pqrstsixteen";
+
+    #[test]
+    fn part2_works() {
+        let  result = part2(INPUT);
+        assert_eq!(result, "281".to_string());
+}}