06_2

day06/datastream.txt

@@ -0,0 +1 @@
+bgdbdsbsbsttldddzzwnzzmpzmmzmqqcgglrglgbbbtmtddrssjtjqqtrtqtqppcvcddswdwbwlblfljfljlhhpchcfcgfcfwfllfccjlcjllbvbgglccznzrnzzvfzvffvzvccnwnnrtrqtttzmmndnqnvvlwvvgcclplccbggcscqscqcnndwdlwlvlffdssrzrtttbvvqttfdfrddhthbblnlmlmqmhhpvpcpwpccmdddbcbcgctggsstwwbcwwqllchlcccfwccvjcjhhvggnvvcssjwjhhdvdhdcdhdqhhwrwcrwcrrjzjccqhhvnnrppsqqplqqcvczzlpprlrqqvpvwwstwwzqqsnqqsrqrlqlggzztzhhvbbcncwnwhwbbqpbqpqdqsqjqrjrddpjpwwvlwlnwwmpwwnmmzgzqqdcdnnqllghhzwhwwggljjwswgwffsbffbggzfzcfzczpptrrnwrrcqqcwqqdttzqzjzqqltlggwlglgwgrgfgnffgqffnlntlnlccjwjfjnfjnffqvfqfcfsslwswfwvfwfvflfhhntngnhggqbbsggchghfggcmgmsggshsmmqffjpjnngwwftwffgqqvmqqslqslqqdzqzhzbhhdzhhllnzzlmzzltlwwsmswwtswtssvqsqhssfdsdtdjdqqqrffqjffrzrppjpgjjpgpmmzbbrcbbprbpbnpbpcpsspqqfggclcpczzngznzvzlvvcwvwcwdwcddhdbdwdhwhllpjllrmmhbmbgmgmpmhpmpqmpprggvsgvsvbsbbqbmmjdjfddsnnqpnnphppsbpsbpsprpjjqhhvrhvvdhdjhdhwdhhdjjrlrbbzhbbjljhllttrccbdbffznnfmnfnvfvrvbblmltlmmlbmmdqmqnmqqmmhchvcvpccnrccqhccshchshzshschcffpwwbdbqbbjhbhmbhmmzzzcscddbsbnnpzpfzzrfrlrmmzzhshbbtjtbtzbbddrwwhchvhtvvmhvmmwssqqzrzdrdqqntnjnrjrbbgqgzgbzgbzgbzgbbqtbbbqjjgvglvlzlqlbbjwjddjtjbjffcsfsnsnpspgpnnglnngrgqgbqgqtgtfggczzmbbvqqrssdqssgrssdzzvjvccbbgcgppgwwtmwwrnwnfwwnnzmzvvvmnnvdddrmrbrtbrbrvrqqcbbgjgfjfcfttgrrjmrmrttbnnsrnsnzsnzztmtgtjgjljdjtjrtrddtbtjbtjbtthhtmmllngnhgnnhthssgffljlnjllfvlvslvsvwvcvfccgqqtsqtqggbjbtjjtjvjtvtvddttqzqczzcvvdtvthvvfrfmrrclrlflbbhhcllfbbcwwgmwmnmpmgpptnpnjpnjjbqjqjddfdfjjpzzjnnvzzwtwpwfppzhphbbmsbmsbmbqqfpfsscttfrtrzzrznrrrbgbdbtdbdjjsmjmttlbtthbttrprpjppsbsjbjcbclchlhhlttntznnzfnfgnncsncnmmdndnlnclnndqnqssbsjbbrzrtzztszzvnznqqpnpbpnpvnpnhpphvpvfvhhrvhrrpttctjcjvcvzcvcscttqptpffscfsccqhchhdcdczcnzcncnhccfrrbprpbpqppdccjhjvjmjpjmpjjvfvrrwppgjgjjdgdmgdggcpccbrrgssbsjbsjsfscfcvvcrvcrcttbtffpqphpchclccwhcwcbwccbzzlvzvffbrbrbjbwjjqvgtcfnhtjvrcwbfjdbvgtqbvmbtscwzrwdfmwtjvswgrvncmftgmppvlcwjpnpffggrmvgtfqgqmhbhpslfwdfvfmbfndrmgfhdbbtdgvnslzpdfvdttqjpcnbzsjcvrprgrhpglwfwtdcbgdsjhnqjntjnsjcgwccjnvvngfpvqwvnclcsvhmwsrccvbjnnrjspwqdvjpfnfvbsslngzpdgjrcsnqfvdlsqdhdllcndshglztgrrjnptqfvllshmhbgdszvmvqdntpgzdvhstgrppwpdtdqvzsfgqfrgmmjqcsjhvrlmnjvfjghlvwbnqcggpqtrjztfzshnqpzznvlqcmnzvrwqlcbnbpwmljpvdzhbvbgtdjlzflsvzlcqdnsgzfjlccvjclqlzdhqzzrscttjmrvjvcqzvtzqlmsssnfcfmvcgmqjjwdnhtvlqrgdvlbbrffmrpnfsmwwwbnwclrgbfnzlbqvjfqjlfvfnfrhdqstddwnwrmsdnvzwfjfgpwcrfqqzbdwwtzprvqtgvtzbttlhcdczlhvlgrbptztswftvnjmgrnbwpfwnztvqmqbznvnllgjmqrwprvwtnptlbfwbblzsblptwpdwgcvwsbmbrtqfvjsbzfvsfvpwfwbnnfcsddhsnwnvvqthjdgvzgjprtqmvhdqjqhgqppqqcpzfcwzcmrslftgrvbvdsdgfzfmvvcqzcszfwdvghdnlwwpddzdsqsdqvvrwhphbqvcbjbtnqgnqqdsqcmrllhmdvpffnqmrgfddjbrjwflshzswvjtmqgqmzvcnlctvdpjhzzlgpzgprjncrscnlmdhvdqpfllsqgstmssvlzmrtjmgwppfqjsrfmlnszdnhngzhtbbnsnvmtzpfsdcsvsvvjnfnzhrzmvlhrbslrsbgwwcvrzpgcnmjqnvgmzmlvpccrmggtzzhsdtbbcdnpdlnbztgjhttmqdhjphcrbgjtctqmgbfmflgqztztcjqvgsscrmwfbvnrnbgbjgqmwdzhwwnddwgrprhvlgftcbnwjqmcgczpbhfqcqzdbdwhmzfmgvcjdsfzdbrzjjvfrvftdblnlhpbqvdprnsjdpznbbgqpgnnjmcnsbszfwblthtwlwrdphjltclmqnbpcgngdnfpltttsrvdmhrcvlqfplqmqvslwgcbrwrmchscczrfgspwjtdqtlbddbsclrlbmhdzqdrgjfsgldfjmgcglbgjhmghntndqcbgqwmdvczbwgcctzvcrsqqctwwddfhhfhwlsrsljpnrlqtbdzprjbfrjgztwbpnfqnlftzcgrpmpcnljhscfbsqzbsgwqcgbvctnhswhrsmwjgcccdsnbscwllmpstpnrccjspnjqmtgcsgbjzpfvzjrhlvnfblqmcmgcrvnpchwhlsqsbhzhsgdvwmdcwphwccvzmmqqjrvqwphbnmddzcmggmbsqrhbcqmdlgvccbhhmhwdjhhhcwnffthmgfhpltqbhnvdqfrzjdvlppqhzfdgbzbrtfllsbvjjcgbwsbcmfrbjtvzqsntzdzprnpmfpfpgmfprlbcdqbdzjsfjbtczdpdnhlwdhmwsjtvmztbhdbbdgvrtbqsqbsnwjjhlslzcblrwlfpzqlvdvmgqhrpjmbjbntmjsjvgsmdsnctlgtnlqgfvhwqbjbrczpfzmzwgvrphfmnnhrlzwzgthzqnzzmptppzdszlcpjjvbpjbtjfrqtbnpnwsdglbbjftvngcghjlnsqwspmmfdpslsmqtpngbtvvrvbqqdsphfhvsnmhprfclnjmfrtqnlqcbmfrggbstwdbwsvtpvflvfgqltmqjpnfclbwtlwhmqrmzcrbztstgpjrdsnwpqrcnvvnnnszlrtpqjtsnbjrdcthrzrtccgcvnnlzfjlcdnzzqclvtncjbznrlpnzhvcwmrfrzpcldfmfzfpchlmddgvcfdqdhzzdtwhsfcvsthtmqgvhzdpjcgwsmrvwsnqmhdnfqdrrnmjwcpjjftfdhvwrwwtvptzfrmgffdcrhvcmccfqctswzzmlsjvdjzgjgndhmmrwvwmmtrnpgsnmtcqdbdpqjmcddcrbcfmmccnvsfhwtvfhsjfmlfttspfghpfggrffnrwjggqwggrmpzscprvdzmzhwjjcsmpsltzwgchttwpngrlptprqnjzzpbpbcvrclggtqwlcwdpjpnjrhtgqwsvhsswwqtlnglnqnvffrgmlbzthvnhrzvsvclgdmmjzrpfv

day06/index.js

@@ -0,0 +1,34 @@
+import { readFileSync } from "fs";
+
+const input = readFileSync("datastream.txt", "utf-8");
+
+function checkForDuplicates(arr, howMany) {
+    const map = new Map();
+    
+    arr.forEach(char => {
+        map.set(char, true);
+    });
+
+    return map.size === howMany;
+}
+
+const arr1 = new Array(4).fill('');
+const arr2 = new Array(14).fill('');
+let i = 1, startOfPacket = 0, startOfMessage = 0;
+
+
+console.log(arr1)
+for(const char of input) {
+    arr1.shift()
+    arr1.push(char);
+
+    arr2.shift()
+    arr2.push(char);
+    
+    if(startOfPacket === 0 && i > 4 && checkForDuplicates(arr1, 4)) startOfPacket = i;
+    if(startOfMessage === 0 && i > 14 && checkForDuplicates(arr2, 14)) startOfMessage = i;
+    
+    i++;
+}
+
+console.log(startOfPacket, startOfMessage);