From 3ef5039528f34bc8f42e6c97386448b0f4f7e3a5 Mon Sep 17 00:00:00 2001
From: Dreaded_X <tim@huizinga.dev>
Date: Tue, 6 Dec 2022 22:08:56 +0100
Subject: [PATCH] Even faster

---
 2022/src/bin/day6.rs | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/2022/src/bin/day6.rs b/2022/src/bin/day6.rs
index 9e1b21b..5d60dbc 100644
--- a/2022/src/bin/day6.rs
+++ b/2022/src/bin/day6.rs
@@ -76,25 +76,24 @@ mod tests {
 }
 
 // -- Helpers --
-fn is_start_marker((index, window): (usize, &[u8])) -> Option<usize> {
+fn is_start_marker(window: &[u8]) -> bool {
     for i in 0..window.len() {
         for j in i+1..window.len() {
             if window[i] == window[j] {
-                return None;
+                return false;
             }
         }
     }
 
-    return Some(index + window.len());
+    return true;
 }
 
 fn solution(input: &str, length: usize) -> usize {
     input
         .as_bytes()
         .windows(length)
-        .enumerate()
-        .find_map(is_start_marker)
-        .expect("Invalid input")
+        .position(is_start_marker)
+        .expect("Invalid input") + length
 }
 
 // -- Solution --