From cf6303a5bc1558ebdb7b467da38f74cd3ac3a9b1 Mon Sep 17 00:00:00 2001
From: Santo Cariotti <santo@dcariotti.me>
Date: Mon, 5 Dec 2022 19:46:06 +0100
Subject: Add 2022

---
 day9/src/lib.rs | 90 ---------------------------------------------------------
 1 file changed, 90 deletions(-)
 delete mode 100644 day9/src/lib.rs

(limited to 'day9/src')

diff --git a/day9/src/lib.rs b/day9/src/lib.rs
deleted file mode 100644
index 3391a74..0000000
--- a/day9/src/lib.rs
+++ /dev/null
@@ -1,90 +0,0 @@
-use std::str::FromStr;
-
-#[derive(Debug)]
-struct Heightmap {
-    data: Vec<Vec<u8>>,
-    rows: usize,
-    cols: usize,
-}
-
-impl FromStr for Heightmap {
-    type Err = ();
-
-    fn from_str(s: &str) -> Result<Self, Self::Err> {
-        let rows: Vec<_> = s.trim().split('\n').collect::<Vec<&str>>();
-        let mut data: Vec<Vec<u8>> = vec![];
-        for row in &rows {
-            data.push(
-                row.chars()
-                    .map(|x| x.to_digit(10).unwrap() as u8)
-                    .collect::<Vec<u8>>(),
-            );
-        }
-        Ok(Heightmap {
-            data,
-            rows: rows.len(),
-            cols: rows[0].chars().count(),
-        })
-    }
-}
-
-impl Heightmap {
-    fn resolve(&self) -> usize {
-        let mut count: usize = 0;
-
-        for i in 0..self.rows {
-            for j in 0..self.cols {
-                let top = if i > 0 { self.data[i - 1][j] } else { 10 };
-
-                let bottom = if i < self.rows - 1 {
-                    self.data[i + 1][j]
-                } else {
-                    10
-                };
-
-                let left = if j > 0 { self.data[i][j - 1] } else { 10 };
-
-                let right = if j < self.cols - 1 {
-                    self.data[i][j + 1]
-                } else {
-                    10
-                };
-                let center = self.data[i][j];
-
-                if center < top && center < bottom && center < left && center < right {
-                    count += (center + 1) as usize;
-                }
-            }
-        }
-
-        count
-    }
-}
-
-pub fn part1(input: &str) -> usize {
-    let grid: Heightmap = input.parse().unwrap();
-    let result = grid.resolve();
-
-    result
-}
-
-#[cfg(test)]
-mod day9_test {
-    use super::*;
-
-    #[test]
-    fn test_with_example_data() {
-        let data = include_str!("../example.txt");
-        let result = part1(data);
-
-        assert_eq!(result, 15);
-    }
-
-    #[test]
-    fn test_puzzle_input_part1() {
-        let data = include_str!("../input.txt");
-        let result = part1(data);
-
-        assert_eq!(result, 541);
-    }
-}
-- 
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