day11 part2

day11/input.txt

@@ -1,10 +1,140 @@
-...#......
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day11/src/main.rs

@@ -6,38 +6,48 @@ fn main() {
         .map(|x| x.chars().collect::<Vec<char>>())
         .collect();
 
-    let mut rotate: Vec<Vec<char>> = vec![];
+    let mut y_expand: Vec<i32> = vec![];
+    for line in &input {
+        if line.iter().all(|char| char == &'.') {
+            y_expand.push(1);
+        } else {
+            y_expand.push(0);
+        }
+    }
+
+    let mut x_expand: Vec<i32> = vec![];
     for j in 0..input[0].len() {
-        let mut tmp: Vec<char> = vec![];
+        let mut is_empty = true;
         for i in 0..input.len() {
-            tmp.push(input[i][j]);
+            if input[i][j] != '.' {
+                is_empty = false;
+            }
+        }
+        if is_empty {
+            x_expand.push(1);
+        } else {
+            x_expand.push(0);
+        }
     }
 
-        if tmp.iter().all(|x| x == &'.') {
+    // println!("{:?}", x_expand);
-            rotate.push(tmp.clone());
-        }
-        rotate.push(tmp);
-    }
 
+    let mut galaxies: Vec<(i64, i64)> = vec![];
 
-    let mut expanded: Vec<Vec<char>> = vec![];
+    let mut y_offset: i64 = 0;
-    for j in 0..rotate[0].len() {
-        let mut tmp: Vec<char> = vec![];
-        for i in 0..rotate.len() {
-            tmp.push(rotate[i][j]);
-        }
-        if tmp.iter().all(|x| x == &'.') {
-            expanded.push(tmp.clone());
-        }
-        expanded.push(tmp);
-    }
 
-    let mut galaxies: Vec<(i32, i32)> = vec![];
+    for (i, line) in input.iter().enumerate() {
+        if y_expand[i] == 1 {
+            y_offset += 1000000 - 1;
+        }
+        let mut x_offset: i64 = 0;
 
-    for (i, line) in expanded.iter().enumerate() {
         for (j, char) in line.iter().enumerate() {
+            if x_expand[j] == 1 {
+                x_offset += 1000000 - 1;
+            }
             if char == &'#' {
-                galaxies.push((i as i32,j as i32));
+                galaxies.push((i as i64 + y_offset, j as i64 + x_offset));
             }
         }
     }
@@ -53,3 +63,59 @@ fn main() {
     println!("{:?}", dist_total);
 
 }
+
+// use std::fs;
+
+// fn main() {
+//     let input = fs::read_to_string("input.txt").unwrap();
+//     let input: Vec<_> = input.split('\n')
+//         .map(|x| x.chars().collect::<Vec<char>>())
+//         .collect();
+
+//     let mut rotate: Vec<Vec<char>> = vec![];
+//     for j in 0..input[0].len() {
+//         let mut tmp: Vec<char> = vec![];
+//         for i in 0..input.len() {
+//             tmp.push(input[i][j]);
+//         }
+
+//         if tmp.iter().all(|x| x == &'.') {
+//             rotate.push(tmp.clone());
+//         }
+//         rotate.push(tmp);
+//     }
+
+
+//     let mut expanded: Vec<Vec<char>> = vec![];
+//     for j in 0..rotate[0].len() {
+//         let mut tmp: Vec<char> = vec![];
+//         for i in 0..rotate.len() {
+//             tmp.push(rotate[i][j]);
+//         }
+//         if tmp.iter().all(|x| x == &'.') {
+//             expanded.push(tmp.clone());
+//         }
+//         expanded.push(tmp);
+//     }
+
+//     let mut galaxies: Vec<(i32, i32)> = vec![];
+
+//     for (i, line) in expanded.iter().enumerate() {
+//         for (j, char) in line.iter().enumerate() {
+//             if char == &'#' {
+//                 galaxies.push((i as i32,j as i32));
+//             }
+//         }
+//     }
+
+//     let dist_total = galaxies.clone().into_iter().enumerate()
+//         .fold(0, |mut acc, (i, gal)| {
+//             for next in &galaxies[i + 1..] {
+//                 acc += gal.0.abs_diff(next.0) + gal.1.abs_diff(next.1);
+//             }
+//             acc
+//         });
+
+//     println!("{:?}", dist_total);
+
+// }