2022 Day 6 Complete!

2022/day06/input

@@ -0,0 +1 @@
+mgwwjddqzqdqsstctjjsdjsdsrsfsmfsfwwltwlwhwnhhlffzddgffwlffbsfshfshhgvvdrrltlzlnzznrrnrsnnhgnnfjnnvpnnbjjnwwrcwrrhlhvlhhmzmqzqrqtqmqpmpwwmssgsrgrgtgmtgmtgtdtvdvmvsvsbvsbvbtthmmftmmdnmddcrcvcrrfjfhhfjhffjllcpllmcctjtrttwmtwmwffrlrqlqzzpddsqdqqgjqgjgngwnncjnnvsnswwbzbtzzflzzqsqbsbvbmbnnjpnpnnpfpmpmnpmmjljtltssqnsqslstswtwswwjddvmmzlzqlzqzqjjlttmtrtbtmtgmtmsttrctrrsqrqvvrzrcrhhlnhllbfbtthrhdhllmwlmlgglgsgmgsmszzprpwpfprfftffpssjzjgzjzddqfqmmwqwvwlvlqqtbtwwrwttmsmppbmmpcmctcnnhssnjncnlcnctcjjrzrwrfwfcwffczztrtsrtstlsssljssmvssjzssrqqrcqqwlqwlwffsflssrrzhzzhrzzdgdppspwplpqptttvddggzszccrrnzzwwdwjddrvvwggpvgpvvhdhqddffrnngcncjcjlcchrrftrrjccrcrqqgcglcgcscmmlzmmtcmcffwfcfrcrggdmggdvvnrvnnphnngzzpdpgpspqqgrrnffmfpmffmgfmmjmzztlljlggljjcnnrqnqpnqndnffnwwbpwpjwjjlslmsmtmtjttsvsggrmmdpmmcjjswsqqwfwwrwffczfzggqvggdlldhllsdsfdsdhhmmzmjjmpjpddsccqrrjhjlhjjcnnpwnnffjwwcsszrrnmnsmnnjbnndwnnnhnwwjtwtlwtwqqbnqnbnqqfjfdjdbbwbqwqpqggbcbhhtrtqrrddpdwdlwdddzvzwvvdfdpdcdvdtdpttwwdzdzmdmqmzmnzmnmhmwmjwwshhcqcpcvvzgzdggnjnnhwnhhswwvccqrqlqggcngnmggmffblbglltlstshhrjjlvlppsqslljtjtgglvltvlvmllhrhdrrmqrmqmjjdcjjppqwwllvsvsrszslsvvghvvhmmfbfvfpfmmvdvppwggtrrjvvsbbzffbmffpqqqhnhncclzczwcwpwssrprfrsrbsbnbvnnwzwqqpsqsspmssztssstrtcczsznzvvpvttnssdjdhjddngdgvvmsszbzsbsmbbgsbgsgmmhwhghrhjhphshchgglmlvlhlbhlldwdggdsscvcbcssfbbvggvwwtstltrrwttjdtdvttlsttfhfmhhcbclbcbffqqslshlldhdqhhjwwlffrbrdbrrgcrrfmffbhhlslrslrslrlsrsnsnvvqfqnnfdfmfmttmcmcrrcmmmjttjvtvvjbjqjnnbtbnblbtlblplgltlqltlztzvvtdvvtpvvwdwfflbflfrrhbrbbmjmcjmccztzwwjzwwzwdzdnnwcclbllqgghjhlhthwrdglrmcpbmtrnrdtvjrpmzqmljzzrtpzsrhnjrsdmpnsgdhvqchcfqjqdncjqfnscwjqvszpzzfhpjljmvsqnjzmrsgsbzlvrddtdmwbwwgprlvdfflrpztdzrhtmlzrrtdmpmcprqzzwlnmfjvsrltfjgcnnfllnzmbjcbthvbffczsspmczrpgpdjmvrvfmprfmnqdcnfwwvgdrwvrbtlqmhrrjvtrmmgrlprtnzdlszgbtbwztdrmpmlfblshzcnsczlblgwzrpnlccwhmcqhssmpznbdnnqgzzmjprjttdjhmjbmgqvzblsjwmplzsthrswhsdbvtqgrfzmbpqtpqgqdqcvzlgjrtvrhvzgmcmrwdmfpdvjddsmmsnvrdgnsbsdzcbprbqchqcgnwmfsrmqtrcdhdtzztbvmpblftwqlmlmmjcjhhjlgnnhljnncvbnjhgbjrltlwscswgvqmcnssbcdrtbgnhgmpmvjwtrbrbrdbdqfrncvhdstwztwcpbjrjwzmdlwvlvmsrhghjwjnjstbcqjqtjrgcvhzjdhdgbgdlhvjmztwvhgzzggwwhhhzvtrldchztmwfjvnqnvhnwpfvzzvnlvsccmvsngzgtnttssmdmhwzlhtpnfhczsdfnrstbwvwpqmslcvpvhfzttzhsgzpbhqdtswshljpncznjhzmgvvbcllmzprhrvwljwcjpcdqmwbzvsdcgtmwnrhswsgqhwpwhbjpnhnpjvgsqcjltzrqvqfflcdcvpwnznvtqbfbtlpmtdgbbwdwncqsqnbtgfdzzqzzvjnwmzdmlgstmnjwznjqghglvmwjzlqrnddcqhgndlhlbmqdhrqgrjqztnhpzssnwmrqclmwpgbvfrvgqqvtthznsqwgndjrprbgrhcvhpzbfhdmgnhsrqjvjstbtmnltsbjfzczvjqnhtldqclsflbhvvlzjwrqqgbgpwqwpfjctqpzdqwcfstmwbzgrgrtzngljjnvtggrqcbgjwtqsdgwmfjqppnzgfsfdmlctztbhnntnntdlvrsdvnllvmpggjzspqfhzwrttwzpqrnqjhmpjnmrzrpnqzshcqgctbtflqflcrzpmnphgbbghhwzplljwngbtffwmrwggdztvtfgwldlswqvjptvbfvnbpglhgrdgcfmvrslqldmwjqvjpvwgpjddvglllvpqwvbchqsmjrncgvgmqbsbcwfbsbpqcqzjfpcdzszgmvqgqjlflpfzbsrhsrzrdbpssrjbcfhvztftlzqpsglpwhbscgwdlbgghzsbwznnbgnnsgjghmmpmmrmqmdhnflgvgprqfcbpzbcpjscvnpfrmtvzsbflmffvcfsvdsggzdqtppcjzphcqwrqtrczqmwcdmdqndzmhdpnfqsbndnvjlzrsjzmpcrfgjwccsdtzvslccwhlvzjwjgvwpsnsggmqgsjfbwmjstsgnqmtjhljvfnflnngdrqvscwlqqdsglhghczhjdvgrjcqblmncdbjvsbwgptgpvvzhcjgjnvttrgzrjnqlvfbrmpzdcbbnnrqptpzpssznbsrstdphbgdrsnrhcjwwgsncdzvqfnmnvqcmcgdgjdbqjzdrvvbvhjdfcqndmqwscmsvppclzrhgbldqtwctbdhpbbwfvwpcpsvddmrhqbhlrrmrblnmqqqbwvcwwbwprlmhtdncmjhmjgphmrrhcdrqgmcrzwsznqzpngbtsvjgglrddhjflbrhvqwmmhmqzhphwnvqwzczdvqjsnlhfqbcgddtwgnlcgbfqmzfpqmnbpvfhdhjlnwtrlmggtbfnfvmqrzjvjjvffctsrwgfcpghhnzqmwtlsfhjrvqpwqhngrhpswslsvtgnbvbmwsfwmpntfsfpshrjzvghhpvnlbmnrhltfpmqdwzfhztvhlmbnmhnbvdzbbtczvwbvwtvjghhjjrtgbrqrhmbgvssstdwztdmdsqtctghjhsnpslqttdlvndmjfnmdzwrblfjqcwptfttvlcgsvwcbmfzbdlmrtchgqlfspwznbzfjthjtfwshqgfsfdsmzsmpptzschlzjshvfwtmpszvrvlggbrgpcnqwndhjjprztdfddblhfljbvttfvhchhdfsftrhccrbncmhwpcpwfqthngcqptmvsmpcswdrdlcbqvvhwmcqqwbzlblrgfcrrndwdvlvnpjvwchzjzmgrqhzzmgqqdsdflpclpdtlhvhcthzjfbvjvzsnbvwfsnglvbnwnbgrqwpbgclhjhztttbjwvmlmmgmzncbwswncqhmcfjfnwnpbrmchhpgwngrfwgdfdqmblwlghdjvdhjftdblrtcvvgbvpmbjhfwgpmghqbqrcpgfvhtvqtlbjdblggcpjzlrhpbsqwntfhbhwwszpdlsgbpfqhvrjrhsldcgvqhqmwdfcrcmhrvvwvbrfsrrcvwzhqqvgltlnhwhdrhrdqsvmdzjwgmqdsccwhcgwltfhdfqpsltjccwsttmrc

2022/day06/main.go

@@ -0,0 +1,51 @@
+package main
+
+import (
+	"fmt"
+
+	h "git.bullercodeworks.com/brian/adventofcode/helpers"
+)
+
+func main() {
+	inp := h.StdinToString()
+	fmt.Println("# Part 1")
+	fmt.Printf("First Start of Packet @ %d\n", findFirstStartOfPacket(inp))
+	fmt.Println("")
+	fmt.Println("# Part 2")
+	fmt.Printf("First Start of Message @ %d\n", findFirstStartOfMessage(inp))
+}
+
+func findFirstStartOfPacket(inp string) int {
+	return findFirstWithXUnique(inp, 4)
+}
+
+func findFirstStartOfMessage(inp string) int {
+	return findFirstWithXUnique(inp, 14)
+}
+
+func findFirstWithXUnique(inp string, x int) int {
+	for i := range inp {
+		if i < x {
+			continue
+		}
+		if findUniqueCountBefore(inp, i) >= x {
+			return i + 1
+		}
+	}
+	return -1
+}
+
+func findUniqueCountBefore(inp string, pos int) int {
+	if len(inp) < pos {
+		return -1
+	}
+	counts := make(map[byte]int)
+	for i := pos; i >= 0; i-- {
+		if _, ok := counts[inp[i]]; !ok {
+			counts[inp[i]]++
+		} else {
+			return len(counts)
+		}
+	}
+	return pos
+}

2022/day06/problem

@@ -0,0 +1,112 @@
+Advent of Code
+br0xen (AoC++) 12*
+{ʼyearʼ:2022}
+
+--- Day 6: Tuning Trouble ---
+
+   The preparations are finally complete; you and the Elves leave camp on
+   foot and begin to make your way toward the star fruit grove.
+
+   As you move through the dense undergrowth, one of the Elves gives you a
+   handheld device. He says that it has many fancy features, but the most
+   important one to set up right now is the communication system.
+
+   However, because he's heard you have significant experience dealing with
+   signal-based systems, he convinced the other Elves that it would be okay
+   to give you their one malfunctioning device - surely you'll have no
+   problem fixing it.
+
+   As if inspired by comedic timing, the device emits a few colorful sparks.
+
+   To be able to communicate with the Elves, the device needs to lock on to
+   their signal. The signal is a series of seemingly-random characters that
+   the device receives one at a time.
+
+   To fix the communication system, you need to add a subroutine to the
+   device that detects a start-of-packet marker in the datastream. In the
+   protocol being used by the Elves, the start of a packet is indicated by a
+   sequence of four characters that are all different.
+
+   The device will send your subroutine a datastream buffer (your puzzle
+   input); your subroutine needs to identify the first position where the
+   four most recently received characters were all different. Specifically,
+   it needs to report the number of characters from the beginning of the
+   buffer to the end of the first such four-character marker.
+
+   For example, suppose you receive the following datastream buffer:
+
+ mjqjpqmgbljsphdztnvjfqwrcgsmlb
+
+   After the first three characters (mjq) have been received, there haven't
+   been enough characters received yet to find the marker. The first time a
+   marker could occur is after the fourth character is received, making the
+   most recent four characters mjqj. Because j is repeated, this isn't a
+   marker.
+
+   The first time a marker appears is after the seventh character arrives.
+   Once it does, the last four characters received are jpqm, which are all
+   different. In this case, your subroutine should report the value 7,
+   because the first start-of-packet marker is complete after 7 characters
+   have been processed.
+
+   Here are a few more examples:
+
+     • bvwbjplbgvbhsrlpgdmjqwftvncz: first marker after character 5
+     • nppdvjthqldpwncqszvftbrmjlhg: first marker after character 6
+     • nznrnfrfntjfmvfwmzdfjlvtqnbhcprsg: first marker after character 10
+     • zcfzfwzzqfrljwzlrfnpqdbhtmscgvjw: first marker after character 11
+
+   How many characters need to be processed before the first start-of-packet
+   marker is detected?
+
+   Your puzzle answer was 1544.
+
+--- Part Two ---
+
+   Your device's communication system is correctly detecting packets, but
+   still isn't working. It looks like it also needs to look for messages.
+
+   A start-of-message marker is just like a start-of-packet marker, except it
+   consists of 14 distinct characters rather than 4.
+
+   Here are the first positions of start-of-message markers for all of the
+   above examples:
+
+     • mjqjpqmgbljsphdztnvjfqwrcgsmlb: first marker after character 19
+     • bvwbjplbgvbhsrlpgdmjqwftvncz: first marker after character 23
+     • nppdvjthqldpwncqszvftbrmjlhg: first marker after character 23
+     • nznrnfrfntjfmvfwmzdfjlvtqnbhcprsg: first marker after character 29
+     • zcfzfwzzqfrljwzlrfnpqdbhtmscgvjw: first marker after character 26
+
+   How many characters need to be processed before the first start-of-message
+   marker is detected?
+
+   Your puzzle answer was 2145.
+
+   Both parts of this puzzle are complete! They provide two gold stars: **
+
+References
+
+   Visible links
+   . https://adventofcode.com/
+   . https://adventofcode.com/2022/about
+   . https://adventofcode.com/2022/events
+   . https://adventofcode.com/2022/settings
+   . https://adventofcode.com/2022/auth/logout
+   . Advent of Code Supporter
+	https://adventofcode.com/2022/support
+   . https://adventofcode.com/2022
+   . https://adventofcode.com/2022
+   . https://adventofcode.com/2022/support
+   . https://adventofcode.com/2022/sponsors
+   . https://adventofcode.com/2022/leaderboard
+   . https://adventofcode.com/2022/stats
+   . https://adventofcode.com/2022/sponsors
+   . https://adventofcode.com/2016/day/6
+   . https://adventofcode.com/2016/day/25
+   . https://adventofcode.com/2019/day/7
+   . https://adventofcode.com/2019/day/9
+   . https://adventofcode.com/2019/day/16
+   . https://adventofcode.com/2021/day/25
+   . https://adventofcode.com/2022
+   . https://adventofcode.com/2022/day/6/input

2022/day06/testinput

@@ -0,0 +1 @@
+mjqjpqmgbljsphdztnvjfqwrcgsmlb