Initial commit

.gitignore

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+/target

Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "adventofcode2024"
+version = "0.1.0"

Cargo.toml

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+[package]
+name = "adventofcode2024"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]

input/02-0.in

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+7 6 4 2 1
+1 2 7 8 9
+9 7 6 2 1
+1 3 2 4 5
+8 6 4 4 1
+1 3 6 7 9

src/bin/01.rs

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+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);
+}

src/bin/02.rs

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+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);
+}

src/main.rs

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+fn main() {}