From 6f5f1be338676f051cd39a92905f5e260ed3a32c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Benjamin=20B=C3=A4dorf?= <hello@benjaminbaedorf.eu>
Date: Thu, 2 Dec 2021 11:33:23 +0100
Subject: [PATCH] Day 2

---
 1-alt/aoc01.scala |   10 +
 1-alt/input.txt   | 2000 +++++++++++++++++++++++++++++++++++++++++++++
 1-alt/run.sh      |    6 +
 2/Cargo.lock      |    5 +
 2/Cargo.toml      |    9 +
 2/input           | 1000 +++++++++++++++++++++++
 2/src/main.rs     |   44 +
 shell.nix         |    1 +
 8 files changed, 3075 insertions(+)
 create mode 100644 1-alt/aoc01.scala
 create mode 100644 1-alt/input.txt
 create mode 100755 1-alt/run.sh
 create mode 100644 2/Cargo.lock
 create mode 100644 2/Cargo.toml
 create mode 100644 2/input
 create mode 100644 2/src/main.rs

diff --git a/1-alt/aoc01.scala b/1-alt/aoc01.scala
new file mode 100644
index 0000000..3b3cd29
--- /dev/null
+++ b/1-alt/aoc01.scala
@@ -0,0 +1,10 @@
+def main(args: Array[String]): Unit = {
+  val data: Seq[Int] = io.Source.fromFile("input.txt").getLines.filter(_.nonEmpty).map(_.toInt).toSeq
+  def solution(xs: Seq[Int]): Int = xs.sliding(2, 1).count{case Seq(a, b) => b > a}
+
+  val part1 = solution(data)
+  val part2 = solution(data.sliding(3, 1).map(_.sum).toSeq)
+
+  println(s"Part 1: $part1")
+  println(s"Part 2: $part2")
+}
diff --git a/1-alt/input.txt b/1-alt/input.txt
new file mode 100644
index 0000000..ad0a3bd
--- /dev/null
+++ b/1-alt/input.txt
@@ -0,0 +1,2000 @@
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diff --git a/1-alt/run.sh b/1-alt/run.sh
new file mode 100755
index 0000000..ff89e62
--- /dev/null
+++ b/1-alt/run.sh
@@ -0,0 +1,6 @@
+#!/usr/bin/env bash
+
+nix-shell \
+  -p scala curl \
+  --run \
+  'scala -e "$(curl https://gist.githubusercontent.com/machisuji/7bca405fac2612c5a9575c056204f773/raw/b7556120bfadd9faf2b2a91ce1907df9fca2cf66/aoc01.scala); main(Array[String]());"'
diff --git a/2/Cargo.lock b/2/Cargo.lock
new file mode 100644
index 0000000..9c3ccc5
--- /dev/null
+++ b/2/Cargo.lock
@@ -0,0 +1,5 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "aoc-2020-1"
+version = "0.1.0"
diff --git a/2/Cargo.toml b/2/Cargo.toml
new file mode 100644
index 0000000..6f24acf
--- /dev/null
+++ b/2/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "aoc-2020-1"
+version = "0.1.0"
+authors = ["Benjamin Bädorf <hello@benjaminbaedorf.eu>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/2/input b/2/input
new file mode 100644
index 0000000..83b7ae1
--- /dev/null
+++ b/2/input
@@ -0,0 +1,1000 @@
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diff --git a/2/src/main.rs b/2/src/main.rs
new file mode 100644
index 0000000..1680e0b
--- /dev/null
+++ b/2/src/main.rs
@@ -0,0 +1,44 @@
+use std::fs;
+
+fn main() {
+    // part_1();
+    part_2();
+}
+
+fn part_1() {
+    let contents = fs::read_to_string("./input").expect("Couldn't read file!");
+    let position = contents
+        .lines()
+        .map(|s| {
+            let c: Vec<&str> = s.split(" ").collect();
+            let num = c[1].parse::<usize>().unwrap();
+            return (c[0].to_string(), num);
+        })
+        .fold((0, 0), |acc, command| match command.0.as_str() {
+            "forward" => (acc.0 + command.1, acc.1),
+            "up" => (acc.0, acc.1 - command.1),
+            "down" => (acc.0, acc.1 + command.1),
+            _ => acc,
+        });
+
+    println!("{}", position.0 * position.1);
+}
+
+fn part_2() {
+    let contents = fs::read_to_string("./input").expect("Couldn't read file!");
+    let position = contents
+        .lines()
+        .map(|s| {
+            let c: Vec<&str> = s.split(" ").collect();
+            let num = c[1].parse::<usize>().unwrap();
+            return (c[0].to_string(), num);
+        })
+        .fold((0, 0, 0), |acc, command| match command.0.as_str() {
+            "forward" => (acc.0 + command.1, acc.1, acc.2 + acc.1 * command.1),
+            "up" => (acc.0, acc.1 - command.1, acc.2),
+            "down" => (acc.0, acc.1 + command.1, acc.2),
+            _ => acc,
+        });
+
+    println!("{}", position.0 * position.2);
+}
diff --git a/shell.nix b/shell.nix
index e25d8ef..9caf6e5 100644
--- a/shell.nix
+++ b/shell.nix
@@ -3,5 +3,6 @@
 pkgs.mkShell {
   buildInputs = [
     pkgs.rustup
+    pkgs.scala
   ];
 }