Day 08

src/day08/mod.rs

@@ -1,26 +1,80 @@
 use crate::read;
-use indextree::Arena;
-use itertools::Itertools;
-
-#[derive(Debug)]
-struct Directory {
-    pub size: usize,
-    pub name: String
-}
 
 pub fn run() {
-    for line in read("08").lines() {
+    let input = read("08");
+    let lines = input.lines().collect::<Vec<_>>();
+    let mut count = 0;
+    let mut max_score = 0;
 
+    for r in 1..lines.len() - 1 {
+        let row = lines[r];
+        for c in 1..row.len() - 1 {
+            let height = row[c..=c].parse().unwrap();
+
+            let mut is_visible = 4;
+            let mut score = 1;
+
+            score *= if let Some(sc_score) = (0..c)
+                .rev()
+                .map(|cc| (c - cc, row[cc..=cc].parse::<usize>().unwrap()))
+                .find(|(_sc_score, other_height)| other_height >= &height)
+            {
+                is_visible -= 1;
+                sc_score.0
+            } else {
+                c
+            };
+
+            score *= if let Some(sc_score) = (c + 1..row.len())
+                .map(|cc| (cc - c, row[cc..=cc].parse::<usize>().unwrap()))
+                .find(|(_sc_score, other_height)| other_height >= &height)
+            {
+                is_visible -= 1;
+                sc_score.0
+            } else {
+                row.len() - c - 1
+            };
+
+            score *= if let Some(sc_score) = (0..r)
+                .rev()
+                .map(|rr| (r - rr, lines[rr][c..=c].parse::<usize>().unwrap()))
+                .find(|(_sc_score, other_height)| other_height >= &height)
+            {
+                is_visible -= 1;
+                sc_score.0
+            } else {
+                r
+            };
+
+            score *= if let Some(sc_score) = lines
+                .iter()
+                .enumerate()
+                .skip(r + 1)
+                .map(|(rr, l)| (rr - r, l[c..=c].parse::<usize>().unwrap()))
+                .find(|(_sc_score, other_height)| other_height >= &height)
+            {
+                is_visible -= 1;
+                sc_score.0
+            } else {
+                lines.len() - r - 1
+            };
+
+            max_score = max_score.max(score);
+
+            if is_visible > 0 {
+                count += 1;
+            }
+        }
     }
+    count += 2 * lines.len() + 2 * (lines[0].len() - 2);
 
     #[cfg(feature = "part1")]
     {
-        println!("Day 8, Part 01: {}", "TODO");
+        println!("Day 8, Part 01: {}", count);
     }
 
     #[cfg(feature = "part2")]
     {
-        println!("Day 8, Part 02: {}", "TODO");
+        println!("Day 8, Part 02: {}", max_score);
     }
 }
-