Day 6.txt

            string input = "qzbzwwghwhwdhdqhhbhfbfsstggdsssgzgdzzdbbbzmbzzvlldppjnjlltwtsszwswgssjnsjnnfqfzqqjzjfjmfmwfmfhfnnmdnmnllbzzlbzlzflldzdbzbsbdddpgdppzhphhjjtccjgcgrgjgcjgjjsbjbffsgsqqrsqqgppgmgcmmrdrqdqbqmmctchcgcdgdwdwcdcjcfjccmpmlpllqqpmpllhfhchppwwdmdhdphpvprrhwhgwwlrwlwggwlwqqnmqnqrrbbzdzwddqzznllzwlljsscqqtlltppqspswsttlrttnvvvwllfslsjsfjssnqnbbbvgvlltjtltjljmljjfgfbggcbgbmbjjvwjvjgvgzvvzddrjdddrwrlrlgldlhlwwcddbsbbtwwcssrnndvvsbsnbsbmbnmngnpgpphfhzhshllltqtppnrrzpzrpzzrttmbmssbrbmbsmsnspnsncscwwmjwmwdmwmrmvmqvqvjqvvnrrtntwwwwsrwrnwnrwwwlslrlhrllvpvhppdpprrgzrgzggqmqgmgvghhsmhhjljfflrflfrlrzzbjjqmmmcncddvhhzjjqzzjfzzbssjqqtsqtqccmttdhttmwtmtffspplhlrhrdhhhpghgrhrchhmgmqgqlglssvnnwrrrrqqbmmpgmpmdmmljlflzzjttqntqqcnqccrvcczffclffmvfvwvmvnvsvnvffczzljzztdtztcztctbtppmrprqprpbbhlhphphhvppvdvmddvcctvvjbvvpmpbpnpllvclvlqlwqqpcpffdwdsdttzftfddbrrgsrgsgvgpgjpggfvgfvvtqtnnscssmnnfqnnblnnjlnlbbjrrmmpgmgnnqbbcjbcjbbmjjljsjrsjrsrwrgwgpgqgccqppfdpdssffgdgwddcvdvzzpttjlttmwwhnnlntncttfvfwvvwrvrwwlhlwlvwvzvpvfpvvsbslblrlssjddwhwfhwffqjfjzfjfmfrrvsrrlbrrdfdmdwmddpnpfnpfnfppczpprzprpvpjjtltptvvrgvvsttflfvfqqhnnbmnbmmpsptpdpttrbbhjbbdnntppbsbmssgccfdfflppbcpbblclrlhrhttffvqqvvnpnmpnnrbnnhqnqrrwvwrrbvbffcvctcjcwwmzmvvtdvtvbtblbvlbvlvdvdrdsrdrprllnzznzhhcjjsgglfglgrlrwwfcfzfjzfztfztzggffjftjffcbfbhhwfwnnbssrpsppmllszstztwwgbwgbgtbgggztgztzwtztbbrffznndhdmmqggssjfssrgssbnsndnqnvqvqvjqvqttlctltvlttrzrqrrdprddpqqvppvddgmdddpldllnvvjdjcjdjvvznzqqbgqbgbpbnbvvdjvvsnndsdjjjhnhggrnnrvrvlvqllqhhsbhssvvlhlssgqgmqqcscpsspsrpsrpspvvdmvdvwwcjwwvhwvvmzvzvfvccfzczjccscbcrcjrrrsgrsspnsntsnnrnwwhdwwzhzbbwgwcgglvlttqrttvrrgprrljlddnttqrqffgdfgdgzzhghthhmdmsmtsshhsfhhgzgvzgzwzffvlffzjjrttsdddbldljlvjvjttwdwzzrbblwbbgmbmgmbggbdbsbqqwzzgnzgzczpzfztftbtwbtbsttrwrfrssbrrdqdjqdqppdsswrwttmgmllqbqnnpspjjzjjmbbsddgjgbjggqqlgqgmgdmmwcmwcmwwsddvgvpphmhqmmlvlpvlpltllphhcshhrsrgsgzssspjspplgghvvwhwgwssbhshvvscshhbccbtcbcvvmnndsdwwbzbffhmmbppfjppbsblbtlltggzczdczdzjdjpjtppwdwlwqwnwjnnvttmcmzzqccvfcvvmrmzmwmhmttgdgmsrlddnbgqfbbmrpdglpbtdqpmctzjrffvvqnltcqlfddwqhvjpzhczzwhsmjtrpgsdtqlcqsljsjzqwhcfwttgghsjqhzqlgjzgrtgttwblpprbppcpzsbntrwwmvfvbmjjrjwjqcjhnstmvwzrbnjpzznnctrtllzhtwttntjqwjnfspzccqpjlzbncgbjjjztbgfmzflzsqflflcrfhtlsgbdfdbtwwqfdrqhzmmqdqthwzwqqqzddfvbwhnqwqtgwhtzlqqpwhcjhglcmmncvfcmqdwnzzmjbflwjrcjzwcblftzrpdcjzcmtzccjbsqmcnfmbsmrvlhswnmrqdczvvzzcnffgljdbtlvjgrqttcjhjmcdllnvhcdpztqghfgvjcqmqvmdwhcgrtwpjlmjfbqmnjnbvvjczcwfcrhcgzmsvmjlplcpghnqtpzddnwtmrwmqwbttsnlngszfbnslqvlbzbfzqnjpdvcdpmjpmmjhvzwwgzfjfqwbqwrznhsdpjgsvzlsrtlmhjrfnwrmljlqzwnfnsmqtzfsldwrgmbrrvcmmmdmwflwnvpwsrrstmffwbtwqmjzdnzbwmqfrfdgsmhzhprdsgsqtljqhtdqmvnzlwhrrqqftbvnhmjnzvmbdqpjhzjnszgcfptfcmthpfcvfvdmwdswzfgwjblglfbpfvvwrmnzlcvtgqbcrhfqlffrznnhbtbwdwdldthbhdsqvnghpqdlvpfmzhjbtdhfmrdzpghtppmvddnphcnnczvznwzrvtcwvpslhrhmhzbzqtjqjvdpwncjbqdnwwpnfblqtqdwwqncbvtsncfhgncrprvhvzppwjfpdmtdrmtfcqdmdhwzrhpnrvspfbzhsvlpwzgrrhnrllhmpcdfcqdhcnphlffpbfmbsznmvfdgshbsjcjjvhqqfpmjgpdpcrglbqdrnqmftqtnwcsgqzdwntfplsnlhdbdmcgwfldzzgmzjsdnldbnlnhjqhpmnsljsbhrglhjbbrmlhrmjnvzhnlvnfpdzfzwwdpzwhnqhlbqhrgfmvzpctdvscqbgznzdsvvvvcjnmbzlvsptslmqnggqjcmgvtgbnrzlmzqzmtdfvhjqqcpvbngmngjvrtcfvsmbvthvhmdcfhthmnjcvsvmsbwsjtmrwshspcsmnhvzqvglntngbmgtdngbvvcjrznpdmmsssljnnqjwwfzgwtlfqqpsqghjgrghldrcdmcqvqdjsfrfrnlnvltpfjhmcclwbsdcbmvmlnwltztfggzmrtnsczwvqgpqtwffmphprgrmjlnftlgqjvrngbcndlmrblmvcjsdhdcmtgsztjttpbgcznfcgdwfwdnqmrrjgdgrgshjfjqrbsjdhblvrqhlfphnbdslrjszcnpfhhwrfhhdvqbjpsmzznzbtbsgcggtctfbsrscvzlplfhlwjlrmzhbwjqhffdhrwcdctwvttwqzbdtrhdhdvtgvdbzjtqvdgbpwtzqqqnljztgpbjjcrgdgmrrsfvngcdbgzvcfpdppbgfrmmdnqdvtlwwglmghjwfjjrwjfnwgwdplbmlfljhsmshwvvvtdnvfcbbwplwnvzfcjwgsrrlctpsrhprttcjgcmfsjggfvbbljsbjtzplvjdwnwgsgvvntjwdwdqbwmtnnlgdcmfcccnwnrjlqtznjhdzwfpbzhjdmwwpcmffcwsnpfhmgqgwwnvpmqvrdfhlqtghrrbggdmtvpqgqsspmchnrqnrmqlddnspcdrwqpvclhrvjtzhpvthpltwqqbrdfjtnwncwrmdqszdpmmdzmjwjvqnfszvbchfdvwzhtrfgfhfmgwprdpqgmbfntsqztvqmtjvgbsjvzsbhfznbbzrstqbrrmqdjcztmfpnwbmvtccmvlhtvmgfdzcchbccrzznscbdwrdtnpslvcqmgrrvwhnjgjdpvbfgsdtdcmhpnwfwnnntqjqnwzfwnhsrjbhtqtlncvsnhgvtntfwldqfzztcdctsscfdmtnmdqgqgwmtqhlmswtqrvqbchdwtjsdlqjvfjdtmzlvrzwvfprzvjzrrfn";
            int result = 0;

            for (int i = 0; i < input.Length - 14; i++)
            {
                if (CheckNonMatch(i, 14, input))
                    if (CheckNonMatch(i + 1, 13, input))
                        if (CheckNonMatch(i + 2, 12, input))
                            if (CheckNonMatch(i + 3, 11, input))
                                if (CheckNonMatch(i + 4, 10, input))
                                    if (CheckNonMatch(i + 5, 9, input))
                                        if (CheckNonMatch(i + 6, 8, input))
                                            if (CheckNonMatch(i + 7, 7, input))
                                                if (CheckNonMatch(i + 8, 6, input))
                                                    if (CheckNonMatch(i + 9, 5, input))
                                                        if (CheckNonMatch(i + 10, 4, input))
                                                            if (CheckNonMatch(i + 11, 3, input))
                                                                if (CheckNonMatch(i + 12, 2, input))
                                                                    {
                                                                        result = i + 14;
                                                                        break;
                                                                    }
            }

            Console.WriteLine(result);

            //// Solution part 1
            //for (int i = 0; i < input.Length - 4; i++)
            //{
            //    if (input[i] != input[i + 1])
            //    {
            //        if (input[i] != input[i + 2] && input[i + 1] != input[i + 2])
            //        {
            //            if (input[i] != input[i + 3] && input[i + 1] != input[i + 3] && input[i + 2] != input[i + 3])
            //            {
            //                result = i + 4;
            //                break;
            //            }
            //        }
            //    }
            //}
            //Console.WriteLine(result);
        }

        public static bool CheckNonMatch(int start, int counter, string input)
        {
            for (int i = 1; i < counter; i++)
            {
                if (input[start] == input[start + i])
                {
                    return false;
                }
            }
            return true;
        }