commit 80f32ef868594f190657b649b92364bc457a8c35
Author: LongHairedHacker <sebastian@sebastians-site.de>
Date:   Wed Dec 1 20:04:56 2021 +0100

    Finished day1

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..c0d6e3e
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,65 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "aho-corasick"
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+checksum = "1e37cfd5e7657ada45f742d6e99ca5788580b5c529dc78faf11ece6dc702656f"
+dependencies = [
+ "memchr",
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+[[package]]
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+ "regex",
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+[[package]]
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+dependencies = [
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+[[package]]
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..f04b4cc
--- /dev/null
+++ b/Cargo.toml
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+[package]
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+edition = "2021"
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+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
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diff --git a/inputs/day1.txt b/inputs/day1.txt
new file mode 100644
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diff --git a/src/bin/day1.rs b/src/bin/day1.rs
new file mode 100644
index 0000000..95451b0
--- /dev/null
+++ b/src/bin/day1.rs
@@ -0,0 +1,40 @@
+use std::error::Error;
+use std::fs::File;
+use std::io::{self, BufRead};
+use std::vec::Vec;
+
+fn main() -> Result<(), Box<dyn Error>> {
+    let file = File::open("inputs/day1.txt")?;
+    let lines = io::BufReader::new(file).lines().map(|l| l.unwrap());
+
+    let numbers: Vec<u64> = lines.map(|l| l.parse().unwrap()).collect();
+
+    let mut last_number: Option<u64> = None;
+    let mut count = 0;
+    for num in numbers.iter() {
+        if let Some(last_number) = last_number {
+            if num > &last_number {
+                count += 1;
+            }
+        }
+        last_number = Some(*num);
+    }
+
+    println!("Answer Part1: {}", count);
+
+    count = 0;
+    last_number = None;
+    for window in numbers.windows(3) {
+        let num = window.iter().fold(0, |a, b| a + b);
+        if let Some(last_number) = last_number {
+            if num > last_number {
+                count += 1;
+            }
+        }
+        last_number = Some(num);
+    }
+
+    println!("Answer Part2: {}", count);
+
+    Ok(())
+}