day 6 solution

2022/day6.txt

@@ -0,0 +1 @@
+rqwqtwwrmrqqrcrtrpppjrjgrgjgqgttgbbhppftpfpdpmpsstffqvfqvvdjjpllltqltqtrrzlllbldbdsdqqgpqggzccgbgnnmjmljmljldjldjjlnnhndhdmmslmslmlhmmntnrtnrnbrbqrqhqfftwftfsfzfcfrrzllchcwwtwstwwjwrjjfwwgzwzqzpzhzqhqbhqhssltsszhsszdssrwssdppjcpjjrwjwnwjnnzjjhsjhsjsjvvtffffqfflglwglgbgpbgbgghfghfhdfhdfhfssqppvlvslltwwhwvwpwgggnpnnmqnntqnnlhhdbhdbbtvvcrrcgrrdrvrjvvlmlnmndnmnrncnznsnsqnsswrwzwmwzzbpbhphqhpqpbpqpjpjvpvwpvwppdvdhdccqbccfncctrcrjcjjdsdhdnhhwpwlwwbmbhmbhhpzhhccvffqqnsqqmnnspnnpfpzppspgsppgbbdwbbdcchfhgfhfllljtllnjlnlddvcdvdqvvqwqppprtpthtthqqfbqqpfpzfpfcfsscrsccbgbngbbgdbbpgpqqlmqlmmgffqqqsbqbtblbwbqqvbqvbqvvnzvzpvvqhvqqtltptllbflbflbflltddlblflvfvbffmsffhlhshmmgbbgjjdndqqmqllzjzvvhjhnhcnchhznnhhppwqpwpffwvwzzppwpfwftwtnnqbnqnrnrzznffzzblzlvzlzrrszscsqcssbggcgvvddsttgqqgwgcclzzszddlvddvbddrlrcllrblrrhlldzdtdccqllsblsszlszzdllhjljhhhzhffdwfdwfddwdtdrtdtntddldsllqffdvdhdpdhdrdprprrhggdqgghggmwgmghhchlhmllrnrdrcrqccbqqfbqbccjpjhhvppcwpwffmmzzfqflfjfdfbfqqtmthmttwftwwpmpzplzzpvvgppsbpbccbtcbcddzbzwwmsscrcctgtgjgtjthhjzzcqqmmmvccwjcwjwzzwnnwgwtgwwbsbvbccrscccnggfjfwfjfrfsfddncdncndnqqwzzmssbdsbswswdddpdqdbddcvcmmwwssrtrrlddndmdtmtdmttwwmsmffwqwvwbwhbbqfqqgcqcmctctntjntnbnrbrmbbqtqccqbcbvbnbqnnghgbbmfmwmdwmdmpmwppdwpdwwnzwnwrnwrnntqnttcmcqqbrqrttsjtstcscpcspsnswsggrhggjrjjbhhbnbmmdlmddtqdtdrdwwjvjgjjdhjdddbwwsfflppbwbcbpbjjzqznnrwnnvmvjvwvqqrlljgjmjjqhjhwjhwjjsvsnvvlwlqqjpjjbsjjcddtfthffrqfrqrfqfrfllfzzqllztltnltntpttqmmgwmwwwjjdrjrzrlrwlwzzzzphpphvphvphvpvdvfdflljgglrlrqlrrfpfqpqnpqpmmblbflbfbpfpwpjwpjpbjpjmjljblldbllnrnjjjljrlrcrrgzgbbzrznzzhnzhhtmhmqhmqqnzzvfzvzfftjftfvvpmvppwzzhnzhzvvwzwwqcwctwwgrrtgglgngsgvgwvwpvpbbrvrvwrvwvbwwpsprrrcbbpqppfjjjqnjndnmddvsvlslmmwwdwcchmmrjmjwwsrwrhwwpcgmpmvbdmlmqbnblbbgtmtgqslnvcnmwrflrnwhqzrsnwhncwdvbcpjrqsscwzrjvslhscpvmqjnltwhshjmbhgttbzllrvpnhgdmwtddbwmpgbhrndpgwzfvqdmpcvhlnjnqbwqmshgwhmfjgsbscsjtfbfvmlljqwwjtnltbzjpcqdfmdldvmsnmzqmghcvhlpjzzszcpvldrflbcppzwgppfpbslplrqwgbfwpwbtbnrmbrrrpqndzvhmlhvtlnjvhdrhhvmwzjntsgffjsdpdlhnlslnbmbsmdsvpmpbjpjcwhbpfnhbmttfglglnnhhcqvbpvnrwcszwjsdhqwctrpgsrcbfpzhbnrbllrlflqdlgzwpwgwwvmbsppbcjcdltbgwfndqjlvndhtclfmwnqrbfvvqdzspfcslplhtmsqqtrcdvbhfscvnmzplcglwnzbvgflclclqmdgfzjqqrrmpcqrzgqcnzbmncmvdzrmmvfqrrqzqbjmjgjwmfbnmmgvmzsgjjspjqbvfhrdvllgqsffjnfqdthjbjwhwqdqhsnctwgbszvrsbwbpptcjjvftnhdmwmhtjrjrlrdrqjznhqftgtldnpbrlprjmplmwdbzqpmwwvcqccjlhqbhcjprvrfmmfmljwmbrlhcglthgbmrfmbpsztfcglpzlfbpjhmvcmvrprmvmrvvgbbllzschwshhfbnmgwrbhlqvsdjdmmbtjzthwssghtqvhtqcswdhbwhphhsrwhwwtslwvrhpgqfmftnrtqpwfqqdgftdlqfndjlzhvlrthnqdqrzpprdgwwqlplrmqtdqgbdntmjcjhlbbmctvnnhtppfbjpsbmndbdplqlfqfhzqvtqcvmprwbhdtjrqrqvmcssqnfqwtchmjfjlpwsghplbthdnbhfbhhphdmlmtjcvmzjbnqbfldrvlmjfnnrlsnwrtnrpfqdhchltmbvjzhgjwzblqdthmffztqvzzfszmdqdzlfpbfgjfdjqscrhvjflbllnlghncczrlpcbwpnmzcnqhbfnlmnbqvmwvbchwhlfcssctsdcwmtfdgbhljwprfncdgwlgzzmvfqrdsmlwbrmbmtzqqdqdpzvtbstscglrwdpndnstrhgjchnpzsvcjngmzsddwsbllpvqqzzjlmsbncbndqmqphzqzcngjzpfnjmsvngtcvhhjsssrnhjrsmvbsrdjcrppvgsqbqjzbrhjqlgmqfclbrdhwwjdlsjnmjcjrmsstngswrhmdqthprcbrndfpdjgpqtfmmfvbztqdhzhzbzhjjpfgnvrmspdvmhfvbvztmlrhfqfdcfnzzndlfldpfhrbjrwlwnprdmqjwppbrdjhpbvnrvjlrbwdwttzhqqgcclbwghbgrhcvwjrrchqgzztrjgrltcpdscjdfcphndfzdqsbpsjrljdnflfvrzcrjflddfgpvnpmdqbhzwbfrpzsnpbcbgfchvvmqpnfpvvdvhfnpbfzwmbnlpqzgrpwtsjbpzdrsfmnfqwqvpgnrjhmvmphlfdpfhdjljlzftdzdvhjrvjdctwfrctglwmrtdlrvmhcqvfvpgmstghczmvclptzspdsrlvrgvjtvflhsmqswdpqjrrnhgrggzmcpqsctqbhpqrsbstwzgzghqgltcpbrhbcdqlhfjhlcrnhrpjdzlzqqprvzntbjztqgdqqttmbpbcfbjmdjqsflbczmfnsjdzcnnmjjllhvwbwlgrlpvbffwjvctwnrsfqdnwntscpsjnshhdmcqmcpscrmzltldwlmfnbhbtprsgtsbvzfrsfpvmqjzjqqhwdjjzvbhrvtbscrcpzrqsbgfbpwqfmbsrlhhtntjmtrtlwqsdbmgtdlrwfdnmwwzlltbrjgghbstbnffzmzzdlcdgvmrzsjnqjvczmhrgwbrblrqfmzbbcnfsbfpgjsmptzbclfdnwfgbzlpbgqrdhdmfjdnlzczdpvtbzdmrthslngbrldllfcjplhglmwsfpqjnrgpgqfmbbwchbrqqsncfwnmgdmtchdhlzzqjvtvtvgqbtwvwpsjqwdqhrlfmdgdzchvfbcmqjllpjtnphwqvfwpcjmzqhsbwlcmbsgththrsjtnzlsrcptgtrfcwptbstcsdzbwjljzjztzbqsjdvwglpbpgdjtthjjmsnljltglqcszbzqmblfpncntjzzhmjffldcrcvjjswvzlfffrmsgjtpzggtlpfwpwbmhmggpnmzwrgdjrhglnhfdcjdfjtdjvrnlgqtfqmpgjcvcmnwhhbczwwntfbmgssglngqlttfpcznswvmbprsrzljtlwlljnbbrnwdvvlsbdv

2022/src/days/day6.rs

@@ -0,0 +1,39 @@
+use anyhow::Result;
+use std::collections::{BTreeSet, VecDeque};
+use std::fs;
+
+fn unique_run_position<'a>(line: &'a str, count: usize) -> usize {
+    let mut buf: VecDeque<char> = VecDeque::new();
+    let mut char_counter = 0;
+
+    for c in line.chars() {
+        char_counter += 1;
+        if buf.len() < count {
+            buf.push_back(c);
+            continue;
+        }
+        buf.pop_front();
+        buf.push_back(c);
+        let unique = buf.iter().collect::<BTreeSet<_>>();
+        if unique.len() == count {
+            break;
+        }
+    }
+
+    return char_counter;
+}
+
+pub fn run() -> Result<()> {
+    let file_contents = fs::read_to_string("day6.txt")?;
+    let lines = file_contents.lines();
+    let mut line_counter = 0;
+
+    for line in lines {
+        line_counter += 1;
+        let index = unique_run_position(&line, 4);
+        let index2 = unique_run_position(&line, 14);
+        println!("line {}\t{}\t{}", line_counter, index, index2);
+    }
+
+    Ok(())
+}

2022/src/days/mod.rs

@@ -3,3 +3,4 @@ pub mod day2;
 pub mod day3;
 pub mod day4;
 pub mod day5;
+pub mod day6;

2022/src/main.rs

@@ -24,6 +24,9 @@ fn run_day(number: i32) -> Result<()> {
         5 => {
             days::day5::run()?;
         }
+        6 => {
+            days::day6::run()?;
+        }
         _ => return Err(anyhow!("Invalid day provided")),
     }
     Ok(())

2022/tests/day6.txt

@@ -0,0 +1,5 @@
+mjqjpqmgbljsphdztnvjfqwrcgsmlb
+bvwbjplbgvbhsrlpgdmjqwftvncz
+nppdvjthqldpwncqszvftbrmjlhg
+nznrnfrfntjfmvfwmzdfjlvtqnbhcprsg
+zcfzfwzzqfrljwzlrfnpqdbhtmscgvjw