From 4e5012e63e2fd59f7a819cd2b530b1af7676ae5b Mon Sep 17 00:00:00 2001
From: hal8174 <henning.lindemann@pm.me>
Date: Mon, 2 Dec 2024 22:47:47 +0100
Subject: [PATCH] Initial commit

---
 .gitignore    |    1 +
 Cargo.lock    |    7 +
 Cargo.toml    |    6 +
 input/01-1.in | 1000 +++++++++++++++++++++++++++++++++++++++++++++++++
 input/02-0.in |    6 +
 input/02-1.in | 1000 +++++++++++++++++++++++++++++++++++++++++++++++++
 src/bin/01.rs |   22 ++
 src/bin/02.rs |   50 +++
 src/main.rs   |    1 +
 9 files changed, 2093 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 Cargo.lock
 create mode 100644 Cargo.toml
 create mode 100644 input/01-1.in
 create mode 100644 input/02-0.in
 create mode 100644 input/02-1.in
 create mode 100644 src/bin/01.rs
 create mode 100644 src/bin/02.rs
 create mode 100644 src/main.rs

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..cc11b73
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "adventofcode2024"
+version = "0.1.0"
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..83a1806
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "adventofcode2024"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
diff --git a/input/01-1.in b/input/01-1.in
new file mode 100644
index 0000000..ec0133e
--- /dev/null
+++ b/input/01-1.in
@@ -0,0 +1,1000 @@
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diff --git a/src/bin/01.rs b/src/bin/01.rs
new file mode 100644
index 0000000..5145cb2
--- /dev/null
+++ b/src/bin/01.rs
@@ -0,0 +1,22 @@
+fn main() {
+    let text = std::fs::read_to_string("input/01-1.in").unwrap();
+
+    let (mut vec1, mut vec2) = text
+        .trim()
+        .lines()
+        .map(|l| l.split_once("   ").unwrap())
+        .map(|(a, b)| (a.parse::<u32>().unwrap(), b.parse::<u32>().unwrap()))
+        .collect::<(Vec<_>, Vec<_>)>();
+
+    vec1.sort();
+
+    vec2.sort();
+
+    let sum = vec1
+        .iter()
+        .zip(vec2.iter())
+        .map(|(&a, &b)| a.abs_diff(b))
+        .sum::<u32>();
+
+    println!("{}", sum);
+}
diff --git a/src/bin/02.rs b/src/bin/02.rs
new file mode 100644
index 0000000..ac44c6e
--- /dev/null
+++ b/src/bin/02.rs
@@ -0,0 +1,50 @@
+fn main() {
+    let text = std::fs::read_to_string("input/02-1.in").unwrap();
+
+    let t = text
+        .lines()
+        .filter(|l| {
+            let mut f = l.split(' ').map(|c| c.parse::<u32>().unwrap()).peekable();
+            let mut last = f.next().unwrap();
+            let ascending = *f.peek().unwrap() > last;
+            for c in f {
+                if !(1..=3).contains(&c.abs_diff(last)) || (c > last) != ascending {
+                    return false;
+                }
+                last = c;
+            }
+            true
+        })
+        .count();
+
+    println!("{}", t);
+
+    let t = text
+        .lines()
+        .filter(|l| {
+            let o = l
+                .split(' ')
+                .map(|c| c.parse::<usize>().unwrap())
+                .collect::<Vec<_>>();
+
+            (0..o.len()).any(|i| {
+                let f = o
+                    .iter()
+                    .enumerate()
+                    .filter_map(|(j, v)| if i != j { Some(v) } else { None });
+                let mut f = f.peekable();
+                let mut last = f.next().unwrap();
+                let ascending = f.peek().unwrap() > &last;
+                for c in f {
+                    if !(1..=3).contains(&c.abs_diff(*last)) || (c > last) != ascending {
+                        return false;
+                    }
+                    last = c;
+                }
+                true
+            })
+        })
+        .count();
+
+    println!("{}", t);
+}
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..f328e4d
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1 @@
+fn main() {}