cleanup

2024/Cargo.lock

@@ -51,12 +51,6 @@ dependencies = [
  "windows-sys 0.59.0",
 ]
 
-[[package]]
-name = "autocfg"
-version = "1.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ace50bade8e6234aa140d9a2f552bbee1db4d353f69b8217bc503490fc1a9f26"
-
 [[package]]
 name = "bitflags"
 version = "2.6.0"
@@ -192,7 +186,6 @@ dependencies = [
  "divan",
  "helper",
  "nom",
- "num-integer",
  "smallvec",
 ]
 
@@ -280,24 +273,6 @@ dependencies = [
  "minimal-lexical",
 ]
 
-[[package]]
-name = "num-integer"
-version = "0.1.46"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7969661fd2958a5cb096e56c8e1ad0444ac2bbcd0061bd28660485a44879858f"
-dependencies = [
- "num-traits",
-]
-
-[[package]]
-name = "num-traits"
-version = "0.2.19"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
-dependencies = [
- "autocfg",
-]
-
 [[package]]
 name = "proc-macro2"
 version = "1.0.92"

2024/day08/Cargo.toml

@@ -10,7 +10,6 @@ nom.workspace = true
 helper.workspace = true
 divan.workspace = true
 smallvec = "1.13.2"
-num-integer = "0.1.46"
 
 [[bench]]
 name = "benches"

2024/day08/src/lib.rs

@@ -344,15 +344,8 @@ fn part2(input: &str) -> u64 {
                     continue;
                 }
 
-                let mut diff = (a.0 - b.0, a.1 - b.1);
-
-                loop {
-                    let gcd = num_integer::gcd(diff.0, diff.1);
-                    if gcd == 1 {
-                        break;
-                    }
-                    diff = (diff.0 / gcd, diff.1 / gcd);
-                }
+                // diff is always reduced already, no reduction is needed.
+                let diff = (a.0 - b.0, a.1 - b.1);
 
                 let mut antinode = a;
                 while (0..(width as i64)).contains(&antinode.0)