From 7663397c1b6d81f5c2b373d4b640e2f1a8417b60 Mon Sep 17 00:00:00 2001
From: Vivianne Langdon <puttabutta@gmail.com>
Date: Fri, 2 Dec 2022 23:30:14 -0800
Subject: [PATCH] Much cleaner loop for p2

---
 src/bin/p03.rs | 22 ++++++++--------------
 1 file changed, 8 insertions(+), 14 deletions(-)

diff --git a/src/bin/p03.rs b/src/bin/p03.rs
index c546fd5..641c693 100644
--- a/src/bin/p03.rs
+++ b/src/bin/p03.rs
@@ -60,22 +60,16 @@ fn part2(lines: &[String]) {
 
     let mut sum: u32 = 0;
     for chunk in lines.chunks(GROUP_SIZE) {
-        let mut outlier: Option<char> = None;
-        'outlier_search: for i in 0..GROUP_SIZE {
-            if i != GROUP_SIZE - 1 {
-                sets[i].clear();
-                chunk[i].chars().collect_into(&mut sets[i]);
-            } else {
-                for c in chunk[i].chars() {
-                    if sets[0..GROUP_SIZE - 1].into_iter().all(|s| s.contains(&c)) {
-                        outlier = Some(c);
-                        break 'outlier_search;
-                    }
-                }
-            }
+        for i in 0..GROUP_SIZE - 1 {
+            sets[i].clear();
+            chunk[i].chars().collect_into(&mut sets[i]);
         }
 
-        let outlier = outlier.expect("Expect at least one outlier");
+        let outlier = chunk[GROUP_SIZE - 1]
+            .chars()
+            .find(|c| sets[0..GROUP_SIZE - 1].into_iter().all(|s| s.contains(&c)))
+            .expect("Expect at least one outlier");
+
         let priority = to_priority(outlier).unwrap();
         dbg!(outlier, priority);
         sum += priority;