summaryrefslogtreecommitdiff
path: root/2024/2/p1.rs
diff options
context:
space:
mode:
Diffstat (limited to '2024/2/p1.rs')
-rw-r--r--2024/2/p1.rs42
1 files changed, 0 insertions, 42 deletions
diff --git a/2024/2/p1.rs b/2024/2/p1.rs
deleted file mode 100644
index 7c0abe3..0000000
--- a/2024/2/p1.rs
+++ /dev/null
@@ -1,42 +0,0 @@
-const INPUT_FILE: &str = "input";
-
-#[derive(PartialEq, Clone, Copy)]
-enum Direction {
- Up,
- Down,
- Unknown,
-}
-use Direction::*;
-
-fn is_safe(levels: &[u32]) -> bool {
- let mut direction = Unknown;
- for i in 0..levels.len() - 1 {
- let [x, y] = levels[i..=i + 1] else {
- unreachable!()
- };
- let (diff, d) = if x > y { (x - y, Down) } else { (y - x, Up) };
- if direction == Unknown {
- direction = d;
- }
- if diff == 0 || diff > 3 || direction != d {
- return false;
- }
- }
- return true;
-}
-
-fn main() {
- let input = std::fs::read_to_string(INPUT_FILE).unwrap();
-
- let mut total = 0;
- for report in input.lines() {
- let levels: Vec<u32> = report
- .split_whitespace()
- .map(|l| l.parse().unwrap())
- .collect();
- if is_safe(&levels) {
- total += 1;
- }
- }
- println!("Levels! {:?}", total);
-}