2024.1

1 files changed, 23 insertions, 0 deletions

diff --git a/2024/1/p1.rs b/2024/1/p1.rs
new file mode 100644
index 0000000..4ffeb63
--- /dev/null
+++ b/2024/1/p1.rs
@@ -0,0 +1,23 @@
+const INPUT_FILE: &str = "input";
+
+fn main() {
+    let input = std::fs::read_to_string(INPUT_FILE).expect("Reading input file");
+    let mut left: Vec<u32> = vec![];
+    let mut right: Vec<u32> = vec![];
+    for line in input.lines() {
+        let mut fields = line.split_whitespace();
+        let e = "Wrong file format";
+        left.push(fields.next().expect(e).parse().expect(e));
+        right.push(fields.next().expect(e).parse().expect(e));
+    }
+    left.sort_unstable();
+    right.sort_unstable();
+
+    let mut distance: u32 = 0;
+    for i in 0..left.len() {
+        let l = left[i];
+        let r = right[i];
+        distance += if l >= r { l - r } else { r - l };
+    }
+    println!("Distance: {}", distance);
+}