From 3bdf2b156e41629befa7edc24a3d9be4c20ed98d Mon Sep 17 00:00:00 2001
From: JonOfUs <jonofus@flueren.eu>
Date: Tue, 6 Dec 2022 15:34:46 +0100
Subject: [PATCH] Day 6

---
 res/06/input.txt |  1 +
 src/d06.rs       | 36 ++++++++++++++++++++++++++++++++++++
 src/main.rs      |  4 ++--
 3 files changed, 39 insertions(+), 2 deletions(-)
 create mode 100644 res/06/input.txt
 create mode 100644 src/d06.rs

diff --git a/res/06/input.txt b/res/06/input.txt
new file mode 100644
index 0000000..0ba323b
--- /dev/null
+++ b/res/06/input.txt
@@ -0,0 +1 @@
+mgwwjddqzqdqsstctjjsdjsdsrsfsmfsfwwltwlwhwnhhlffzddgffwlffbsfshfshhgvvdrrltlzlnzznrrnrsnnhgnnfjnnvpnnbjjnwwrcwrrhlhvlhhmzmqzqrqtqmqpmpwwmssgsrgrgtgmtgmtgtdtvdvmvsvsbvsbvbtthmmftmmdnmddcrcvcrrfjfhhfjhffjllcpllmcctjtrttwmtwmwffrlrqlqzzpddsqdqqgjqgjgngwnncjnnvsnswwbzbtzzflzzqsqbsbvbmbnnjpnpnnpfpmpmnpmmjljtltssqnsqslstswtwswwjddvmmzlzqlzqzqjjlttmtrtbtmtgmtmsttrctrrsqrqvvrzrcrhhlnhllbfbtthrhdhllmwlmlgglgsgmgsmszzprpwpfprfftffpssjzjgzjzddqfqmmwqwvwlvlqqtbtwwrwttmsmppbmmpcmctcnnhssnjncnlcnctcjjrzrwrfwfcwffczztrtsrtstlsssljssmvssjzssrqqrcqqwlqwlwffsflssrrzhzzhrzzdgdppspwplpqptttvddggzszccrrnzzwwdwjddrvvwggpvgpvvhdhqddffrnngcncjcjlcchrrftrrjccrcrqqgcglcgcscmmlzmmtcmcffwfcfrcrggdmggdvvnrvnnphnngzzpdpgpspqqgrrnffmfpmffmgfmmjmzztlljlggljjcnnrqnqpnqndnffnwwbpwpjwjjlslmsmtmtjttsvsggrmmdpmmcjjswsqqwfwwrwffczfzggqvggdlldhllsdsfdsdhhmmzmjjmpjpddsccqrrjhjlhjjcnnpwnnffjwwcsszrrnmnsmnnjbnndwnnnhnwwjtwtlwtwqqbnqnbnqqfjfdjdbbwbqwqpqggbcbhhtrtqrrddpdwdlwdddzvzwvvdfdpdcdvdtdpttwwdzdzmdmqmzmnzmnmhmwmjwwshhcqcpcvvzgzdggnjnnhwnhhswwvccqrqlqggcngnmggmffblbglltlstshhrjjlvlppsqslljtjtgglvltvlvmllhrhdrrmqrmqmjjdcjjppqwwllvsvsrszslsvvghvvhmmfbfvfpfmmvdvppwggtrrjvvsbbzffbmffpqqqhnhncclzczwcwpwssrprfrsrbsbnbvnnwzwqqpsqsspmssztssstrtcczsznzvvpvttnssdjdhjddngdgvvmsszbzsbsmbbgsbgsgmmhwhghrhjhphshchgglmlvlhlbhlldwdggdsscvcbcssfbbvggvwwtstltrrwttjdtdvttlsttfhfmhhcbclbcbffqqslshlldhdqhhjwwlffrbrdbrrgcrrfmffbhhlslrslrslrlsrsnsnvvqfqnnfdfmfmttmcmcrrcmmmjttjvtvvjbjqjnnbtbnblbtlblplgltlqltlztzvvtdvvtpvvwdwfflbflfrrhbrbbmjmcjmccztzwwjzwwzwdzdnnwcclbllqgghjhlhthwrdglrmcpbmtrnrdtvjrpmzqmljzzrtpzsrhnjrsdmpnsgdhvqchcfqjqdncjqfnscwjqvszpzzfhpjljmvsqnjzmrsgsbzlvrddtdmwbwwgprlvdfflrpztdzrhtmlzrrtdmpmcprqzzwlnmfjvsrltfjgcnnfllnzmbjcbthvbffczsspmczrpgpdjmvrvfmprfmnqdcnfwwvgdrwvrbtlqmhrrjvtrmmgrlprtnzdlszgbtbwztdrmpmlfblshzcnsczlblgwzrpnlccwhmcqhssmpznbdnnqgzzmjprjttdjhmjbmgqvzblsjwmplzsthrswhsdbvtqgrfzmbpqtpqgqdqcvzlgjrtvrhvzgmcmrwdmfpdvjddsmmsnvrdgnsbsdzcbprbqchqcgnwmfsrmqtrcdhdtzztbvmpblftwqlmlmmjcjhhjlgnnhljnncvbnjhgbjrltlwscswgvqmcnssbcdrtbgnhgmpmvjwtrbrbrdbdqfrncvhdstwztwcpbjrjwzmdlwvlvmsrhghjwjnjstbcqjqtjrgcvhzjdhdgbgdlhvjmztwvhgzzggwwhhhzvtrldchztmwfjvnqnvhnwpfvzzvnlvsccmvsngzgtnttssmdmhwzlhtpnfhczsdfnrstbwvwpqmslcvpvhfzttzhsgzpbhqdtswshljpncznjhzmgvvbcllmzprhrvwljwcjpcdqmwbzvsdcgtmwnrhswsgqhwpwhbjpnhnpjvgsqcjltzrqvqfflcdcvpwnznvtqbfbtlpmtdgbbwdwncqsqnbtgfdzzqzzvjnwmzdmlgstmnjwznjqghglvmwjzlqrnddcqhgndlhlbmqdhrqgrjqztnhpzssnwmrqclmwpgbvfrvgqqvtthznsqwgndjrprbgrhcvhpzbfhdmgnhsrqjvjstbtmnltsbjfzczvjqnhtldqclsflbhvvlzjwrqqgbgpwqwpfjctqpzdqwcfstmwbzgrgrtzngljjnvtggrqcbgjwtqsdgwmfjqppnzgfsfdmlctztbhnntnntdlvrsdvnllvmpggjzspqfhzwrttwzpqrnqjhmpjnmrzrpnqzshcqgctbtflqflcrzpmnphgbbghhwzplljwngbtffwmrwggdztvtfgwldlswqvjptvbfvnbpglhgrdgcfmvrslqldmwjqvjpvwgpjddvglllvpqwvbchqsmjrncgvgmqbsbcwfbsbpqcqzjfpcdzszgmvqgqjlflpfzbsrhsrzrdbpssrjbcfhvztftlzqpsglpwhbscgwdlbgghzsbwznnbgnnsgjghmmpmmrmqmdhnflgvgprqfcbpzbcpjscvnpfrmtvzsbflmffvcfsvdsggzdqtppcjzphcqwrqtrczqmwcdmdqndzmhdpnfqsbndnvjlzrsjzmpcrfgjwccsdtzvslccwhlvzjwjgvwpsnsggmqgsjfbwmjstsgnqmtjhljvfnflnngdrqvscwlqqdsglhghczhjdvgrjcqblmncdbjvsbwgptgpvvzhcjgjnvttrgzrjnqlvfbrmpzdcbbnnrqptpzpssznbsrstdphbgdrsnrhcjwwgsncdzvqfnmnvqcmcgdgjdbqjzdrvvbvhjdfcqndmqwscmsvppclzrhgbldqtwctbdhpbbwfvwpcpsvddmrhqbhlrrmrblnmqqqbwvcwwbwprlmhtdncmjhmjgphmrrhcdrqgmcrzwsznqzpngbtsvjgglrddhjflbrhvqwmmhmqzhphwnvqwzczdvqjsnlhfqbcgddtwgnlcgbfqmzfpqmnbpvfhdhjlnwtrlmggtbfnfvmqrzjvjjvffctsrwgfcpghhnzqmwtlsfhjrvqpwqhngrhpswslsvtgnbvbmwsfwmpntfsfpshrjzvghhpvnlbmnrhltfpmqdwzfhztvhlmbnmhnbvdzbbtczvwbvwtvjghhjjrtgbrqrhmbgvssstdwztdmdsqtctghjhsnpslqttdlvndmjfnmdzwrblfjqcwptfttvlcgsvwcbmfzbdlmrtchgqlfspwznbzfjthjtfwshqgfsfdsmzsmpptzschlzjshvfwtmpszvrvlggbrgpcnqwndhjjprztdfddblhfljbvttfvhchhdfsftrhccrbncmhwpcpwfqthngcqptmvsmpcswdrdlcbqvvhwmcqqwbzlblrgfcrrndwdvlvnpjvwchzjzmgrqhzzmgqqdsdflpclpdtlhvhcthzjfbvjvzsnbvwfsnglvbnwnbgrqwpbgclhjhztttbjwvmlmmgmzncbwswncqhmcfjfnwnpbrmchhpgwngrfwgdfdqmblwlghdjvdhjftdblrtcvvgbvpmbjhfwgpmghqbqrcpgfvhtvqtlbjdblggcpjzlrhpbsqwntfhbhwwszpdlsgbpfqhvrjrhsldcgvqhqmwdfcrcmhrvvwvbrfsrrcvwzhqqvgltlnhwhdrhrdqsvmdzjwgmqdsccwhcgwltfhdfqpsltjccwsttmrc
diff --git a/src/d06.rs b/src/d06.rs
new file mode 100644
index 0000000..6dda269
--- /dev/null
+++ b/src/d06.rs
@@ -0,0 +1,36 @@
+use std::collections::HashSet;
+use std::fs;
+
+pub fn d06() {
+    let path = "res/06/input.txt";
+
+    let contents = fs::read_to_string(path).expect("I/O error, wrong path?");
+
+    // Parse chars, filter out newlines
+    let chars: Vec<char> = contents.chars().filter(|c| *c != '\n').collect();
+
+    // Task 1
+    let res = find_marker(4, &chars);
+    println!("Result 1: {}", res);
+
+    // Task 2
+    let res = find_marker(14, &chars);
+    println!("Result 2: {}", res);
+}
+
+// Finds 1st occurence of l unique characters in chars and returns
+// the index of the last of them or -1
+fn find_marker(l: usize, chars: &Vec<char>) -> i32 {
+    for i in l - 1..chars.len() {
+        let slice = &chars[i - (l - 1)..=i];
+        let mut set: HashSet<char> = HashSet::new();
+        slice.iter().for_each(|c| {
+            set.insert(*c);
+        });
+        if set.len() == l {
+            return (i + 1) as i32;
+        }
+    }
+
+    -1
+}
diff --git a/src/main.rs b/src/main.rs
index 50db96a..655829f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,5 +1,5 @@
-mod d05;
+mod d06;
 
 fn main() {
-    d05::d05();
+    d06::d06();
 }