2022, day1: done

3 files changed, 44 insertions, 0 deletions

diff --git a/2022/day1/part2/Cargo.toml b/2022/day1/part2/Cargo.toml
new file mode 100644
index 0000000..69fa504
--- /dev/null
+++ b/2022/day1/part2/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "part2"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+itertools = "0.10.5"
diff --git a/2022/day1/part2/example b/2022/day1/part2/example
new file mode 100644
index 0000000..2094f91
--- /dev/null
+++ b/2022/day1/part2/example
@@ -0,0 +1,14 @@
+1000
+2000
+3000
+
+4000
+
+5000
+6000
+
+7000
+8000
+9000
+
+10000
diff --git a/2022/day1/part2/src/main.rs b/2022/day1/part2/src/main.rs
new file mode 100644
index 0000000..2a65d1a
--- /dev/null
+++ b/2022/day1/part2/src/main.rs
@@ -0,0 +1,21 @@
+use itertools::Itertools;
+
+fn main() {
+    let input: String = include_str!("../../input").to_string();
+    let mut calories: Vec<usize> = Vec::new();
+
+    for (key, group) in &input.lines().group_by(|line| *line != "") {
+        if key {
+            calories.push(group.into_iter().map(|i| i.parse::<usize>().unwrap()).sum());
+        }
+    }
+
+    println!(
+        "{}",
+        calories
+            .iter()
+            .sorted_by(|a, b| Ord::cmp(b, a))
+            .take(3)
+            .sum::<usize>()
+    );
+}