Added day 6 (two programs. had to rewrite for the second problem). Added starter files.

2022/6/Makefile

@@ -0,0 +1,6 @@
+all: a.out b.out
+a.out: main.cpp
+	clang++ -std=c++2b -g -O0 main.cpp
+
+b.out: main2.cpp
+	clang++ -std=c++2b -g -O0 main2.cpp -o b.out

2022/6/data.txt

@@ -0,0 +1 @@
+hqhnqhqshhslswsffchfcfbblvlblqlggfwwqfwwqdddbbbhzhjjrqjqbjqjwqjwqwhwrrmcrrjqjjlllcvcrrnpptzpzmmswmmzrzjrrfcrfccpbpzzvrrdndllttwftwwgzzwhwggdvdnnlrnncscbcfcctchcdchdccztzgzjjtdtcdtcchrrgpgzgsgpsggvtvppdccfhcfclfcfdfnddlbbptbtdbtdtjdjgdjjzljlssgbgcgqcqzccfnftfjjsgstggsngsscvssjzjnjtntvnvssrqqhtqtvqtvvjbvvbnvvqvmvrmmdsdvdwwnbnvbnvvcgvcczcfzftfsfrfsfttldtdrrgrgmgbbdvvbqbhqbqlqsqbsbpbgbvgbgwwrswrwrwttvnnzdnzzwggrmrfmmvllzwlwzzlvlbvllgsllpnlnvncvcvqqrwwcmcczhchzczbccdwcwvwzwwvddlwlhljlqjqnncntnctczzmwmlmccpggljlssqswsmmpvmvwvrrcpcrprmprrtdrtdrrsjsmshmmdpdlppbnbvvmmflmmjvjhvhjvjsjbjwjvvblvbvlbbllwlslvljvlvdvdgvgcchnhpnhnvhhtfhhvssczztlzzgvvqqghqgqssdscsnsrsmrmmwgwmgmlmdmggbgzbgzgdzdzccghgfgddtntftddpdrdrmrjmmmzttqmttnwngggtgtqtqnqhnqqpnnntrntrnnshhjtjzzfqqblqqlblslflmlttcwtwzzrlrnrcrrrgtrrftfhthzhggwggvgvvfvddcnddfjddzqzrrvtrvrfrrgpgrgngsgddlmddzgzppdzzjzhjhjhqqbpbvvlrvrsvrvnrrsgsttndnbngnppmlppvgvfggvcvrvnnsnfnnfqfwwppnddrrfqqgbqqfmmlnlnngwgcgjgnjgjsgjgqjjnccdttpqttswwcgcmgmccrppmqmbbfwwvdwdfwfjwfjjblldsdrdvvgcvcwwllfpllcslsvssnvsnvvhnvnvwwcgwccslsbbnlbnbrrrtprptpdpdvdttgsgwswppcdchhqbqcbqbzbgbbstshthsttqgtqtpqqzhhwhghwwmbbdlbbtlltsllbvbnvvmqvqtvqvttlwtltmmrttwgtwwfdddwcchtchhbthbbclczzqbzzpvvwzwswggjddntnrnnwmnnbdbmbccqgqvvsnvvqbvbzvvzmvzzrfrlfrfhhdvddnmnnmhmqhhrhlrldljlbljjgqqvdvhhgmgvgddmmznndmmhssznsswvwdvdzdhhscssntnftfmmrggbmbmgmlltctbtbntnqqscqcscrcrhrlhhdchhzccvvbfvvpfffbwbsbjjmgmwgmgppjnpjphhlmhhpwwhwzhhhzbbzzcbchhpnnptpvphhsdsccffqbqllchlhlwlcljlppnccqsstzstswtwwljwjmmpttvqqspsjjclljqqlhqqtnnbrrsbrbjjllrmrjmjzmmclmclmmcvvbddhnnmhmbbwqqqhrqqtqmqbqdbdtdvvcscshccmffhqffdgdcgddljdjbdbjbdbrrtjjtnntpntpnpmnpmpgghffrnfrnnmdnmnhmmjcjffftrrttfwfvwvcwwrmwmpwmmnvntthmmgmbbcdclcppjhpjhjwwlppgsszqqwggmttfrfqflfsfmmmhchshmmjtjjgdjjnnsvsmsnwcgdfqljmnphlfdrhpggfqnhnszgpndhdqcgfhtdcgbsbtmhvnnrmqzqqcjdqndzbnrhwjvbvcldmnwltgpqbmstntnggtbqjzzqrfdsfttdfrcnsrpwrjrjqbgtjfmlwsrzdbdqvbtczgsjqhtgmctjfmdglfrsvqtgwpbqghzgzdfwzhbdhlmhdvhwjrdhhtjptvwpmjnmfcjdmdczmczvdqwvbgtvlwvwnvdlbqfshmlmvzzcmjbtpwpwgsqhfsgljzhbppcztfjdntzcvllqnzrqjwfjrlgvhmbpvbtqjrdzcsmcjzcdsmvcmhrbhgnscnfrfmscqsqpqplbrzhsrlsvvpmfdtdmtlrtvspmlljmfpshfmstjgnrrwmqlbnwbndcfdstrtqtnzpfqlcgrzmsnmhllljdgtmvftjttbwhqzcqwbwdbshgcqrptfjwbbfsjnvzztlbdchqrlbbrcnsswmhwphfwrbnvrncbrthprmltlwwlfpbqhdfqzwwcwjgqzdnvmhwpzpbtpwwvzcpfcsfqpwjljzzfwzmlfvhsccppzlzjlrvlpdtjpcptnvqjwtdbzrqwnfwmmjndflqqggczrfjlpdfjffctprnmhfdqvnzbfvhszzdmngnlmwzfdrbvlvjnmbllgrczssqcrhbmnpmqlrzgmqmhgsvcdlqnmlhlzvqzhnccbctslzlbcpdvqltqncpcrzwdchrqmwfwlcbcvfnnpjntfrznqdjsdtzqjjttddwvnfqmznhflblzvvtbwdzrrlqlmndzzzwnpbhhlvlbswfjtbnhlccscbnfgjtwbfdlwvzszwnwzhlbcdpvgqjcrpzsvvnfwqcqvrmhzhggvmzwggdpbfrdscjwhsdsbbjcnzldhzcvqtjrhsbfjlrlpvtcqhnnsvslfrdjvjhfhdcfzqchpvvhzbpqglqlrdttrdtndzhnzhtqndghtgmpsnhptprqzhbbdcrgmbvrvqmbptqgnmsccwmhrlpddvmhjntllwrzqwnsjchnblcgndjtmpswwgcstdftqcbhzgttrhnpvrhspjznhhvrlpdqbzzrvzjphcswhljdldvsrdhzltwgrcsvqwnhtqqjjrjgrplzmsnjhzrfbtqgdfgnbpvjrfzrrpdphgzrfbswdhzgbzswqtwwdtrvvswmjvwhqddfzjhgdqsfnwbmlcfwtmpldrdpwjwggbpmncvbghzjmpsqpvnmbhjfzzpsjdgmrtnndhzrphjzdbgrrnthtrfnspdngbdmwbnfjlsndqswfsvfqftqlgqjpfsfpmdbsjfrptvbpvflqgvlmmbchhghhrwmvdlrhlsdtvjjchwglcrwfsfnnbhjbtccbjsfwrbzrvgsbfnvzghhrqblqchjvdtrrbrwwwmfnczzmmrqdggsfrqbldbbfbbcthtsvpcnlbjjztwvhctbrjltqdwbzmrrfslbmjpnqwllbvjzgfsfqqtwbgwgclgdflshfhwggwdqlgbmdmdqglrtfwbddtsltmsvswhgjtqwtnrncpdzhnpfqcjnjzmtbjfzpjwgfbfggmsmfdhfbjctnhchpgfspthdbfpmvrmdbbspvwzqqwnmfwdnnblbcjszbccgflngnjjwsqshfbhjwgzrmvsgnrdbgwfhdvpmznpnvznfcqdclztcptjrrpbmpztwwbvlvtmngfhmfbfmrjbjzlrcvgllrlgthltstnwmffntqrwsrndlzqhztwpcwbdjjztgdzmgtthcvtvnjzzhvstfqhgddddgdsrbcqzqspjrncphhtbnslzphrtfqphffjrrlgwbrwqfzzqvzhnffcwvrncttgplshccglvchvlcbnlthhmzvcrfjvjqfsjjzzgqlpslfwngqnbgcwffpcqhlmlhvwssrpjbrcbftpzbbpptzrdqwpzpdjhtwbvwcqbfnwtflfgzgttglpcwdnzsmjffgfftdnpzlpszmzrrhvlzdfpgbzqlvvfslnndcmjvvpwzwcdzpcttfwbsdswmfqbbhbfbjvbvtspbbhmphzjsjcmmzpvvzhtvzlgwlqqvbnrgtszvghjfmchrwwhpmbsvfmgvqdtmvdtjppchbsgqrtgtnzczqmpgjdbmmflfpjbcdmhldwpgdtdvsbzhztjzfhcsbndfjntbldjnqwdffqspfnlplbtcdjtwdjhldtsdfrnmpfhzghnpcqlhhgblmqjvwhndqfbccvzzlbzbdprvcpwjjhrqnjptwssbjhgvpgtfzqwrzjvbdgwtnmptvdjrffcmbzmzcmrfbjv

2022/6/main.cpp

@@ -0,0 +1,56 @@
+#include <deque>
+#include <fstream>
+#include <iostream>
+#include <set>
+#include <string>
+#include <vector>
+
+bool Unique(const std::deque<char> &buf)
+{
+	std::set<char> s;
+	for(const char &ch : buf)
+		s.insert(ch);
+	return (s.size() == 4);
+}
+
+int main()
+{
+	std::ifstream ifs("data.txt");
+	if(!ifs.is_open())
+	{
+		std::cerr << "Missing data.txt." << std::endl;
+		return -1;
+	}
+
+	for(std::string line; std::getline(ifs, line); )
+	{
+		if(line == "")
+			continue;
+
+		std::deque<char> buf;
+
+		int idx = 0;
+		for(const char &ch : line)
+		{
+			++idx;
+			buf.push_back(ch);
+			if(buf.size() >= 4)
+			{
+				while(buf.size() > 4)
+					buf.pop_front();
+
+				if(Unique(buf))
+				{
+					std::cout << "At index " << idx << ": ";
+					for(const char &ch : buf)
+						std::cout << ch;
+					std::cout << std::endl;
+
+					break;
+				}
+			}
+		}
+	}
+
+	return 0;
+}

2022/6/main2.cpp

@@ -0,0 +1,52 @@
+#include <fstream>
+#include <iostream>
+#include <string>
+#include <vector>
+
+int main()
+{
+	std::ifstream ifs("data.txt");
+	if(!ifs.is_open())
+	{
+		std::cerr << "Missing data.txt." << std::endl;
+		return -1;
+	}
+
+	for(std::string line; std::getline(ifs, line); )
+	{
+		if(line == "")
+			continue;
+
+		std::vector<char> buf;
+
+		int idx = 0;
+		for(const char &ch : line)
+		{
+			++idx;
+
+			// clear out from beginning up until this character is found:
+			auto i = std::find(buf.begin(), buf.end(), ch);
+			if(i != buf.end())
+				buf.erase(buf.begin(), i+1);
+
+			buf.push_back(ch);
+
+			if(buf.size() == 4)
+			{
+				std::cout << "Start-of-Packet at index " << idx << ": ";
+				for(const char &ch : buf)
+					std::cout << ch;
+				std::cout << std::endl;
+			}
+			else if(buf.size() == 14)
+			{
+				std::cout << "Start-of-Message at index " << idx << ": ";
+				for(const char &ch : buf)
+					std::cout << ch;
+				std::cout << std::endl;
+			}
+		}
+	}
+
+	return 0;
+}

2022/starter/Makefile

@@ -0,0 +1,2 @@
+a.out: main.cpp
+	clang++ -std=c++2b -g -O0 main.cpp

2022/starter/main.cpp

@@ -0,0 +1,29 @@
+#include <fstream>
+#include <iostream>
+#include <set>
+#include <string>
+#include <vector>
+
+int main()
+{
+	std::ifstream ifs("data.txt");
+	if(!ifs.is_open())
+	{
+		std::cerr << "Missing data.txt." << std::endl;
+		return -1;
+	}
+
+	unsigned long total = 0;
+	unsigned long total_pt2 = 0;
+
+	for(std::string line; std::getline(ifs, line); )
+	{
+		if(line == "")
+			continue;
+	}
+
+	std::cout << "    Total: " <<     total << std::endl;
+	std::cout << "PT2 Total: " << total_pt2 << std::endl;
+
+	return 0;
+}