Day One

3 files changed, 29 insertions, 0 deletions

diff --git a/2022/rust/day01/Cargo.lock b/2022/rust/day01/Cargo.lock
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+++ b/2022/rust/day01/Cargo.lock
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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "day01"
+version = "0.1.0"
diff --git a/2022/rust/day01/Cargo.toml b/2022/rust/day01/Cargo.toml
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+++ b/2022/rust/day01/Cargo.toml
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+[package]
+name = "day01"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/2022/rust/day01/src/main.rs b/2022/rust/day01/src/main.rs
new file mode 100644
index 0000000..d8a6b9c
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+++ b/2022/rust/day01/src/main.rs
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+use std::env;
+use std::fs;
+
+fn main() {
+    let args = env::args().nth(1).unwrap();
+    let mut input = fs::read_to_string(args).unwrap().trim().split("\n\n").map(|x| x.trim().split("\n")
+        .map(|x| x.parse::<i32>().unwrap()).collect()).collect::<Vec<Vec<i32>>>().iter()
+        .map(|x| x.iter().fold(0, |x,y| x + y)).collect::<Vec<i32>>();
+    // println!("{:?}", input);
+    println!("{}", input.iter().fold(0, |x,y| x.max(*y)));
+
+    input.sort_by(|x,y| y.cmp(x));
+    println!("{}", input[0] + input[1] + input[2]);
+}