From b5c89d906f2614146eb5d195c527fdf67b9e9cc3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Josef=20Kucha=C5=99?= <josef.kuchar267@gmail.com>
Date: Tue, 3 Dec 2024 08:55:47 +0100
Subject: [PATCH] refactor: cleanup all days

---
 data/examples/03.txt |  1 -
 src/bin/01.rs        |  4 ++--
 src/bin/02.rs        | 13 ++++++-------
 src/bin/03.rs        |  3 ++-
 4 files changed, 10 insertions(+), 11 deletions(-)
 delete mode 100644 data/examples/03.txt

diff --git a/data/examples/03.txt b/data/examples/03.txt
deleted file mode 100644
index f274bda..0000000
--- a/data/examples/03.txt
+++ /dev/null
@@ -1 +0,0 @@
-xmul(2,4)%&mul[3,7]!@^do_not_mul(5,5)+mul(32,64]then(mul(11,8)mul(8,5))
diff --git a/src/bin/01.rs b/src/bin/01.rs
index 2aadd43..fe305f4 100644
--- a/src/bin/01.rs
+++ b/src/bin/01.rs
@@ -7,8 +7,8 @@ fn get_lists(input: &str) -> (Vec<u32>, Vec<u32>) {
         .lines()
         .flat_map(|line| line.split_whitespace().map(|x| x.parse::<u32>().unwrap()))
         .collect();
-    let left = numbers.iter().step_by(2).map(|x| *x).collect();
-    let right = numbers.iter().skip(1).map(|x| *x).step_by(2).collect();
+    let left = numbers.iter().step_by(2).copied().collect();
+    let right = numbers.iter().skip(1).step_by(2).copied().collect();
 
     (left, right)
 }
diff --git a/src/bin/02.rs b/src/bin/02.rs
index 6c887f0..14c715e 100644
--- a/src/bin/02.rs
+++ b/src/bin/02.rs
@@ -6,20 +6,19 @@ fn is_ok(sequence: &[i32]) -> bool {
     sequence
         .windows(2)
         .map(|x| x[0] - x[1])
-        .fold(Some(Ordering::Equal), |acc, x| {
+        .try_fold(Ordering::Equal, |acc, x| {
             let ord = x.cmp(&0);
             if x.abs() >= 1 && x.abs() <= 3 {
                 match acc {
-                    Some(Ordering::Equal) => Some(ord),
-                    Some(Ordering::Less) => match ord {
+                    Ordering::Equal => Some(ord),
+                    Ordering::Less => match ord {
                         Ordering::Less => Some(Ordering::Less),
                         _ => None,
                     },
-                    Some(Ordering::Greater) => match ord {
+                    Ordering::Greater => match ord {
                         Ordering::Greater => Some(Ordering::Greater),
                         _ => None,
                     },
-                    None => None,
                 }
             } else {
                 None
@@ -43,7 +42,7 @@ pub fn part_one(input: &str) -> Option<u32> {
     Some(
         parse_input(input)
             .iter()
-            .map(|line| is_ok(&line))
+            .map(|line| is_ok(line))
             .filter(|x| *x)
             .count() as u32,
     )
@@ -54,7 +53,7 @@ pub fn part_two(input: &str) -> Option<u32> {
         parse_input(input)
             .iter()
             .map(|line| {
-                let mut ok = is_ok(&line);
+                let mut ok = is_ok(line);
                 for i in 0..line.len() {
                     let mut line = line.clone();
                     line.remove(i);
diff --git a/src/bin/03.rs b/src/bin/03.rs
index 5822297..d0b65f7 100644
--- a/src/bin/03.rs
+++ b/src/bin/03.rs
@@ -55,7 +55,8 @@ mod tests {
 
     #[test]
     fn test_part_one() {
-        let result = part_one(&advent_of_code::template::read_file("examples", DAY));
+        let result =
+            part_one("xmul(2,4)%&mul[3,7]!@^do_not_mul(5,5)+mul(32,64]then(mul(11,8)mul(8,5))");
         assert_eq!(result, Some(161));
     }