2022 - Day 1

2022/src/bin/day1.rs

@@ -0,0 +1,41 @@
+use aoc::Solver;
+
+pub struct Day {}
+fn main() {
+    Day::solve();
+}
+#[test]
+fn part1() {
+    Day::test(aoc::Part::ONE);
+}
+#[test]
+fn part2() {
+    Day::test(aoc::Part::TWO);
+}
+
+
+impl aoc::Solver for Day {
+    fn day() -> u8 {
+        1
+    }
+    fn part1(input: &str) -> u32 {
+        input.split("\n\n")
+            .map(|elf| elf.split("\n")
+                 .flat_map(|snack| snack.parse::<u32>())
+                 .sum())
+            .max()
+            .unwrap()
+    }
+
+    fn part2(input: &str) -> u32 {
+        let mut elfs: Vec<u32> = input.split("\n\n")
+            .map(|elf| elf.split("\n")
+                 .flat_map(|snack| snack.parse::<u32>())
+                 .sum())
+            .collect();
+
+        elfs.sort_by(|a, b| b.cmp(a));
+
+        elfs.iter().take(3).sum()
+    }
+}