Day 6

src/day6.rs

@@ -0,0 +1,37 @@
+use crate::util::prelude::*;
+
+static INPUT: &str = include_str!("inputs/day6.txt");
+
+fn find_start(s: &str, win_size: usize) -> usize {
+	let chars: Vec<_> = s.chars().collect();
+
+	chars
+		.windows(win_size)
+		.find(|chars| {
+			let char_counts =
+				chars.iter().fold(HashMap::default(), |mut counts, char| {
+					*counts.entry(char).or_insert(0) += 1;
+
+					counts
+				});
+
+			if *char_counts.values().max().unwrap() == 1 {
+				return true;
+			}
+
+			false
+		})
+		.map(|s| {
+			(unsafe { s.as_ptr().offset_from(chars.as_ptr()) } as usize)
+				+ s.len()
+		})
+		.unwrap()
+}
+
+pub fn part1() {
+	println!("{}", find_start(INPUT, 4));
+}
+
+pub fn part2() {
+	println!("{}", find_start(INPUT, 14));
+}

src/inputs/day6.txt

@@ -0,0 +1 @@
+pqffvllhrhthvhshhpnhpnpqpvpvrpvpwvwjjdssmcsmccjvjmjjwnjwjwhjwwwzswwhvhwwlvvlbvbtbzbfbzbtbqbgbpbggwzggvjjdpdffbmffntncchtccbcffcjfjnjfnntssvtstzssmnnhrhlhbbwfwjfwjfwwbhhfhmmpsssbnssssfzzfpffdrdpdqqvnncjjgrjjmhhpqqcjqcjjzdzzpvvprrlglrrcmcqqtltdltddswsrrzzwgzzgssczcmzzmgmwgmggwwzttpccmcsmmvfvnvppzlzvzllgclggpfggfnfrfvrvwwvhwwvgwwrbbgfglflblzblzbznzhzffplffnrrcqqsgsvshvhlldhhvnhhmdddnssdvdwdwccggmddsmswwtctdtqqjsshhjzzdpdmpdmppjtjwjswjsjjjsdjjtrtbrbjjwwvnvppqphqhwhcwhwbbpgbbnhbnhhswwdswwlcczdztzbbbnwwtmmpvvgjjqgqdqzzdjdpjjnnffhccscvvchhbmbcbffpdpggvdvttpvpqqhggdtdhtdhhmghmgggzwgwrgwggwlggvpggcfcttzmtmgmvgmmpqmqlmqllsqqjbjwjsszczlzrzgrzzhshlhjjwttwnntbtjtjpplccqrqhrhssbmbttrddfvfwwjcwcvwcwwvpvggqwgwjgwgccvqqcmqqtqnqpnqnffdqfqhhqnhnmhmvhmhwwfrwrggnmmmcnmmgsszmzlmzmddcwwthtssgjsgjjgpgnppdqqcgqggzjgjngnrnggvffgddvtvctcftcftfnnnnhssbgsgwwthtqtltftqtnqttsrtrggwcgwcwmwgmgvmmzrmzrzjzmmcclmmtjmjhmmlhlwlppnpccbbrlrqrcrjrdrlrnngmnmvmcmzczztbblglccvzvppzspsddrzzlsllfzfsspnpdnpnvvvgmmpccmpcpgcpcwcddtmddgwgngqqcpqqlhqqczqqbvqqgdqgqmgmlmmvrrgfgzffbccldcdmmcmcgcngnghngngdngdndcncbbpqbbphbphpccpcwwjswwfttbqbsszccrbbdndsdrdqrqjrjjbmbtbdbbgbvgvcggwdwcccttqccnffjpjqqzpzlzvlljhhschhzlhhfhcfhchvcvtvtgvgzvzrvrdrgrwrjwjljhljlssszsqzsswhhmlhlrhlhzzgghjhzjjcllwrwtrrbdbrbnrnprnrffjvvphhvbbqbbscstsmslmlvmvrmmvvngnlnzzwqzzjqqsqbqrrtmrtmmfgmgrgjjtmjmrrddmrrqmrrjmjqmqnqmmcmlmfmffcgcclplffzvzwvzzjtztftqftqffjjpwjjbpjjggzdgzgwzzfrfvvhfvvwcvvbccfcvffpcpgpbbqhbbhmmzfmfvvnjvnjjhzhqqmffndndmmzhmmqnnlglvvjhjddvggqwgwdgwdggqbqgqrqlrrtptsswlssqwssbdsdrsddjsszjszjjpnjnvnjvnnmznmnddccpwwhshzzcfcqcwcddsjjmnjmjljwwgmglllqlhhctcvvqrvrrhfrrbcrrfbrfbrfrqffbwbqwbbjggsjjjnqqrqsqhhwnhnshnhhdjjqfqpqmmqgqgqggzmmnncrrpgglgqlqclqlsqqwnnfntnzttrnnmtmvvfppbrprzpzzdzvvtctnncpclpccsbbswwcscjssvhvhhqggzmgmqgmgwwgcwgccrllzhzzlzlbljbllmqqpjqqhrhqhjhbbjmjmhmddmwmcmvvmbbmvbmmznnwvwlwtllhwlwgwpgplgpgmgngjgglbglgmllvvlttgrrrlsrllghlggjdjwwfjwfjfvhjmgqnwhwpbdtzrphsqbmmvscslhbdzffsfshgsdjbqbwlgmrtschcnfhdlnndsvpwmwttfglpghhznmgfcjsdlwhnmfqvmpvhgpnnwtjfztbmtprqhsqtjwzhwcqjtjbtqwlcldnvggrwddmpllwnrqwdljwzfzqwcdwgqwvnthnrpcsfwrmqvbzjvzqnmdnfgtbzgtnrvblfwmhdsddgbffnjzvjzfpwglctpqhnqdvtblcchrlmndzhlsczgnsmnbwgnjngnjtlrdpfhqjrwcrqvcpspbtwcvgvvmpnwqjjpdpnslmcrcjnjmhqmrmfbcmrcmpbcbhpcvwqwflljfpgdvqhgdwgcphjqfnqzjjpsqnbtfzhftjtfcbhhcmmlwcfznsflfpphprrgvqwfgjcwfgjfsghzcbqrldwrjlzlbjhpgrbmgdpgzmfsqsphqbbslwwpzspccrhcfrgcjlfwhlcmzdcltbbpcrzglqgqntpwtmgstqlmcsqqbsqgmsmfznwcrfdgvsmnfqmwtsvqvlhwwjlrlhnsvcnrtwwmrjcgfncvlrcqrllndlvmrjpfjpgrrjcwhsqvlbtnlqgwjjqzwcvtvlnfnmqqshbcnqtcbvnwtwbfdgqmvnpmjhlsfdntfwwntvsrrsmspzqmglfnprjtdbmbgnplzzclsjpnzwdhcbhpfnqrgmgqtpfhgnfbqhrpmznbrshjhntzctslwhtgtjvpqhntmchhtncfjmbzcgnpcbpmldrtnpvrzqfftbjjcjlpwwgvmnstjghftcczjzfsftgzpfhbspqmrbfhcdfmqbrgrbsmjvgpbrnvbblwwvqzzpmqrspzvzppjfbgfftdvsdvmrjzhfslptzmgndnqqgmrrfnbbpvbmvpngwjhzvfbwfnzlrgwffvjsfdldfgchfjmnzfnzhwrwttrzlrhmnwvjjdqfmbpfllhrgmddjgnwjnbqwjnslcrdjrmnldcpsgzjpdhrpdfwhbvwhwnhcsmwcwstvqrcrqsnvjrzljfgbljfszchbsqnldgntvcscwqqmpnlwtlfmswtmvrlpzgbrjhtgjgpnhggnprpvwfqpjffqhtfvpnrptgrtwzzlvplgnfjmqphgmnssccrdndqgpljtwtntshrpgsjcdrpmccjnjdgmpmzbfhqjzphcswtwvvqcrwsjhtdqgrhqjmjjcrblpswcblnpzvfztqtbpgjcgngqmwrjtlmhvlsbmrdzwlgqlfqcqnsnjcnddssqbftjvnlgcwwfcgdpdmqrdsjmcnzrfrpnvjmbsltpzwjhjzqqvbgrltczbgvcpwdzqsvhddsbjgjgcmnldrfhnhddlvjcvsnghprjwlghhtghldcqsdcdgnmbcjglvjjvvlbhzczlmjsdqtdpzdtvfztgsdfjsdtfchvzcgvhjnnncmsrfvvmcsjjdftmlpczgvtwngssqmzlmsrrsrbhhhrnwqhmpcdvqmdsvvtsgsqfdcpgsdgzvmbzpbpgtcbshnvdzlmpnwmqrvnmrjprmvppjwfbjhlhzsfhqqzmpbclqvsvfrcqwprrcvqcbbwvnqfwnrgjhlwmgzpfspqrvqrhmqnwvzjrhvvgdgswlvzjjhjtdctlthlpzqhjvwwbpsclpgflcnsdshrqbhmczcwljqlndfnfrcdgmptpsltrcjccnpdchgnswdcpsslcslcjznzpgfhznhbgqhdqvddmqzdnmpshhdcjrsmfjllhfvjvmzzhzrvlbpzqngwmlwcmqnppqzncvjshfrpjlptvnqfrfcrfnbhwhpdqqvjhsqvsmprtgfrddwzjzlwhhqvjpfrwgwvwpszzsfzwjtwngdjfllhjrmqjtmvwsvggnswpqpjbtcrnhhhlzbrvhjdstnpctjlgsffrrbfdvjzhwsgthgfsqnvqdcjffsttlrjnhtqqdpfqpjtdgfwcdwzmwfvqgglsrmmqwbszclpzwldwcswpwfwldrfmmdndcptjbmnvgcpntqcdrcffvgnlpjmcqjpfmbmwjfpqzbzhqtqbzsghbnfvhphfzzhfznttpfrqwpmzjchpzzrdclhdltlqbjmjdfdjqlqbwptsghcnvtdscwgpqnlhhvsvglplhlrwpnzmdbsbrlhmpczzfz

src/main.rs

@@ -5,8 +5,9 @@ mod day2;
 mod day3;
 mod day4;
 mod day5;
+mod day6;
 mod util;
 
 fn main() {
-	day5::part2();
+	day6::part2();
 }