fix: day6 tests and rust fmt

src/bin/03.rs

@@ -13,10 +13,10 @@ pub fn part_one(input: &str) -> Option<u32> {
             '<' => x -= 1,
             '^' => y += 1,
             'v' => y -= 1,
-            _ => panic!("oops")
+            _ => panic!("oops"),
         };
         visited.insert((x, y));
-    };
+    }
     Some(visited.len() as u32)
 }
 pub fn part_two(input: &str) -> Option<u32> {
@@ -29,7 +29,7 @@ pub fn part_two(input: &str) -> Option<u32> {
             '<' => x1 -= 1,
             '^' => y1 += 1,
             'v' => y1 -= 1,
-            _ => panic!("oops")
+            _ => panic!("oops"),
         };
         visited.insert((x1, y1));
         match robot {
@@ -37,10 +37,10 @@ pub fn part_two(input: &str) -> Option<u32> {
             '<' => x2 -= 1,
             '^' => y2 += 1,
             'v' => y2 -= 1,
-            _ => panic!("oops")
+            _ => panic!("oops"),
         };
         visited.insert((x2, y2));
-    };
+    }
     Some(visited.len() as u32)
 }
 fn main() {

src/bin/04.rs

@@ -29,7 +29,9 @@ pub fn part_two(input: &str) -> Option<u32> {
         let mut output = [0; 16];
         hasher.result(&mut output);
 
-        if output.starts_with(&[0,0,0]) { return Some(x as u32)}
+        if output.starts_with(&[0, 0, 0]) {
+            return Some(x as u32);
+        }
         hasher.reset();
     }
     None

src/bin/06.rs

@@ -63,19 +63,19 @@ impl From<&str> for Command {
 }
 
 pub fn part_one(input: &str) -> Option<u32> {
-    let mut a = [[0; 1000]; 1000];
+    let mut a = vec![[0; 1000]; 1000];
     for line in input.trim().split('\n') {
         let Command {
             instruction,
             from,
             to,
         } = Command::from(line);
-        for x in from.x..=to.x {
-            for y in from.y..=to.y {
+        for x in a.iter_mut().take(to.x + 1).skip(from.x) {
+            for y in x.iter_mut().take(to.y + 1).skip(from.y) {
                 match instruction {
-                    On => a[x][y] = 1,
-                    Off => a[x][y] = 0,
-                    Toggle => a[x][y] = 1 - a[x][y],
+                    On => *y = 1,
+                    Off => *y = 0,
+                    Toggle => *y = 1 - *y,
                 }
             }
         }
@@ -84,20 +84,20 @@ pub fn part_one(input: &str) -> Option<u32> {
 }
 
 pub fn part_two(input: &str) -> Option<u32> {
-    let mut a = [[0; 1000]; 1000];
+    let mut a = vec![[0; 1000]; 1000];
     for line in input.trim().split('\n') {
         let Command {
             instruction,
             from,
             to,
         } = Command::from(line);
-        for x in from.x..=to.x {
-            for y in from.y..=to.y {
+        for x in a.iter_mut().take(to.x + 1).skip(from.x) {
+            for y in x.iter_mut().take(to.y + 1).skip(from.y) {
                 match instruction {
-                    On => a[x][y] = 1,
-                    Off if a[x][y] > 0 => a[x][y] -= 1,
-                    Off => (),
-                    Toggle => a[x][y] += 2,
+                    On => *y += 1,
+                    Toggle => *y += 2,
+                    Off if y > &mut 0 => *y -= 1,
+                    _ => (),
                 }
             }
         }