added day 1-1

src/day1/1.rs

@@ -1 +1,23 @@
 const INPUTS: [&'static str; 2] = [include_str!("./sample.txt"), include_str!("./input.txt")];
+
+fn main() {
+    for input in INPUTS.iter() {
+        let mut total = 0;
+        for line in input.split('\n') {
+            let first = line
+                .chars()
+                .find(|c| c.is_numeric())
+                .map_or(0, |x| 10 * x.to_digit(10).unwrap());
+
+            let last = line
+                .chars()
+                .rev()
+                .find(|c| c.is_numeric())
+                .map_or(0, |x| x.to_digit(10).unwrap());
+
+            total += (first + last);
+        }
+
+        println!("total = {}", total);
+    }
+}

src/day1/sample.txt

@@ -0,0 +1,4 @@
+1abc2
+pqr3stu8vwx
+a1b2c3d4e5f
+treb7uchet