1 files changed, 96 insertions, 0 deletions
diff --git a/2023/day11.rs b/2023/day11.rs
new file mode 100644
index 0000000..f78f45d
--- /dev/null
+++ b/2023/day11.rs
@@ -0,0 +1,96 @@
+#![allow(dead_code)]
+#![allow(unused_variables)]
+#![allow(unused_mut)]
+use std::fs::File;
+use std::io::Read;
+
+fn transpose<T>(original: Vec<Vec<T>>) -> Vec<Vec<T>> {
+    assert!(!original.is_empty());
+    let mut transposed = (0..original[0].len()).map(|_| vec![]).collect::<Vec<_>>();
+
+    for original_row in original {
+        for (item, transposed_row) in original_row.into_iter().zip(&mut transposed) {
+            transposed_row.push(item);
+        }
+    }
+    transposed
+}
+
+fn insert_rows(m: Vec<Vec<bool>>) -> Vec<Vec<bool>> {
+    let mut out = Vec::new();
+
+    for r in m {
+        if r.iter().any(|x| *x) {
+            out.push(r);
+        } else {
+            out.push(r.clone());
+            out.push(r);
+        }
+    }
+    out
+}
+
+fn print_m(m: &Vec<Vec<bool>>) {
+    for i in 0..m.len() {
+        for j in 0..m[0].len() {
+            if m[i][j] {
+                print!("#");
+            } else {
+                print!(".");
+            }
+        }
+        println!();
+    }
+    println!();
+}
+
+fn main() {
+    // let filename = "in/day11.ref";
+    let filename = "in/day11.pzl";
+
+    let mut f = File::open(filename).expect("cannot open file");
+    let mut content = String::new();
+    f.read_to_string(&mut content).expect("cannot read file");
+    let lines = content.trim_end().split('\n');
+
+    let mut m: Vec<Vec<bool>> = Vec::new();
+    for line in lines {
+        let mut r: Vec<bool> = Vec::new();
+        for c in line.chars() {
+            r.push(if c == '#' { true } else { false });
+        }
+        m.push(r);
+    }
+
+    m = insert_rows(m);
+
+    m = transpose(m);
+    m = insert_rows(m);
+    m = transpose(m);
+
+    let mut p: Vec<(i32, i32)> = Vec::new();
+    for y in 0..m.len() {
+        for x in 0..m[0].len() {
+            if m[y][x] {
+                p.push((x as i32, y as i32));
+            }
+        }
+    }
+    println!("{:?}", p);
+
+    let mut res1 = 0;
+    let mut res2 = 0;
+
+    for i in 0..p.len() {
+        for j in i..p.len() {
+            if i != j {
+                let (x1, y1) = p[i];
+                let (x2, y2) = p[j];
+                res1 += (x2 - x1).abs() + (y2 - y1).abs();
+            }
+        }
+    }
+
+    println!("res1: {}", res1);
+    println!("res2: {}", res2);
+}