From a31254fc6a75d2bfb4f50da598726efbc5db2496 Mon Sep 17 00:00:00 2001
From: Ishan Jain <contact@ishanjain.me>
Date: Sun, 11 Dec 2022 12:42:06 +0530
Subject: [PATCH] Cleaned up day 11 part 2

---
 src/main.rs | 23 +++++------------------
 1 file changed, 5 insertions(+), 18 deletions(-)

diff --git a/src/main.rs b/src/main.rs
index 30a56bf..67a27b6 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -37,9 +37,8 @@ fn parse(input: &'static str) -> (Vec<Monkey>, usize) {
                 .collect();
 
             let op = lines.next().unwrap();
-            let nop = op
+            let nop = op[21..]
                 .bytes()
-                .filter(|c| (b'0'..=b'9').contains(c))
                 .fold(0, |a, x| (a * 10) + (x - b'0') as usize);
 
             let op = move |old: usize| -> usize {
@@ -54,25 +53,16 @@ fn parse(input: &'static str) -> (Vec<Monkey>, usize) {
                 }
             };
 
-            let test = lines
-                .next()
-                .unwrap()
+            let test = lines.next().unwrap()[21..]
                 .bytes()
-                .filter(|c| (b'0'..=b'9').contains(c))
                 .fold(0, |a, x| (a * 10) + (x - b'0') as usize);
 
-            let true_result = lines
-                .next()
-                .unwrap()
+            let true_result = lines.next().unwrap()[29..]
                 .bytes()
-                .filter(|c| (b'0'..=b'9').contains(c))
                 .fold(0, |a, x| (a * 10) + (x - b'0') as usize);
 
-            let false_result = lines
-                .next()
-                .unwrap()
+            let false_result = lines.next().unwrap()[30..]
                 .bytes()
-                .filter(|c| (b'0'..=b'9').contains(c))
                 .fold(0, |a, x| (a * 10) + (x - b'0') as usize);
 
             lcm = lcm * test / gcd(lcm, test);
@@ -105,11 +95,8 @@ fn solution(mut input: Vec<Monkey>, lcm: usize) -> usize {
     for _ in 0..10000 {
         for i in 0..mlen {
             let monkey = &input[i].clone();
-            let ilen = monkey.items.len();
-
-            for j in 0..ilen {
-                let item = monkey.items[j];
 
+            for &item in monkey.items.iter() {
                 let newwlevel = (monkey.operation)(item);
                 let newwlevel = newwlevel % lcm;