31:[{"id":"5c2904dfa856eb4a5e4fd968bc10c15430fe7a02e8045f06beb728235205df7b222a233c0fba2deacd83fdc3d1705c44dc7a3b8f8af6e9055368606f80ffcc90","href":"https://static.observableusercontent.com/files/5c2904dfa856eb4a5e4fd968bc10c15430fe7a02e8045f06beb728235205df7b222a233c0fba2deacd83fdc3d1705c44dc7a3b8f8af6e9055368606f80ffcc90","name":"10_input.txt","type":"text/plain","lastModified":1639170625253.769,"size":9126}] 2f:{"title":"Day 10: Syntax Scoring","cells":[{"id":0,"value":"# Day 10: Syntax Scoring","pinned":false,"hidden":false,"mode":"md"},{"id":3,"value":"## Part 1","pinned":false,"hidden":false,"mode":"md"},{"id":29,"value":"syntaxErrorScore = {\n let score = 0\n for (let line of input) {\n let testResult = testForCorruption(line)\n if (testResult[1] !== null)\n if (charValue.has(testResult[1]))\n score += charValue.get(testResult[1])\n else\n return testResult\n }\n return score\n}","pinned":true,"hidden":false,"mode":"ojs"},{"id":67,"value":"safeOrIncomplete = input.filter( line => testForCorruption(line)[1] === null).map( line => testForCorruption(line))","pinned":true,"hidden":false,"mode":"ojs"},{"id":74,"value":"charValue = new Map([\n [\")\", 3],\n [\"]\", 57],\n [\"}\", 1197],\n [\">\", 25137]\n ])","pinned":true,"hidden":false,"mode":"ojs"},{"id":77,"value":"corruptedValue = {\n let count = 0\n for (let val of Object.entries(corruptedCount))\n count += val[1] * charValue.get(val[0])\n return count\n}","pinned":true,"hidden":false,"mode":"ojs"},{"id":80,"value":"3*10+1197*14+57*7+14*25137","pinned":true,"hidden":false,"mode":"ojs"},{"id":82,"value":"369105-361125","pinned":true,"hidden":false,"mode":"ojs"},{"id":70,"value":"corruptedCount = corrupted.reduce((accumulator, currentValue, index, array) => {\n accumulator[currentValue[1]]++\n return accumulator\n}, {\")\":0, \"}\":0, \"]\":0, \">\":0})","pinned":true,"hidden":false,"mode":"ojs"},{"id":36,"value":"corrupted = input.filter( line => testForCorruption(line)[1] !== null).map( line => testForCorruption(line))","pinned":true,"hidden":false,"mode":"ojs"},{"id":26,"value":"function testForCorruption(line) {\n let stack = []\n for (let [idx, char] of line.split(\"\").entries()) {\n switch(char) {\n case \"(\":\n case \"{\":\n case \"[\":\n case \"<\":\n stack.push(char)\n break\n case \")\":\n if (stack[stack.length - 1] !== \"(\")\n return [stack, \")\", idx]\n else\n stack.pop()\n break\n case \"]\":\n if (stack[stack.length - 1] !== \"[\")\n return [stack, \"]\", idx]\n else\n stack.pop()\n break\n case \"}\":\n if (stack[stack.length - 1] !== \"{\")\n return [stack, \"}\", idx]\n else\n stack.pop()\n break\n case \">\":\n if (stack[stack.length - 1] !== \"<\")\n return [stack, \">\", idx]\n else\n stack.pop()\n break\n default:\n return \"error\"\n }\n }\n return [stack, null, null]\n}","pinned":true,"hidden":false,"mode":"ojs"},{"id":7,"value":"## Part 2","pinned":false,"hidden":false,"mode":"md"},{"id":103,"value":"sortedScores[(sortedScores.length - 1) / 2]","pinned":true,"hidden":false,"mode":"ojs"},{"id":100,"value":"sortedScores = completionScores.sort( (a,b) => a - b)","pinned":true,"hidden":false,"mode":"ojs"},{"id":97,"value":"completionScores = safeOrIncomplete.map( analysis => computeCompletionScore(completeLine(analysis[0])))","pinned":true,"hidden":false,"mode":"ojs"},{"id":93,"value":"function computeCompletionScore(completion) {\n let charScore = new Map([\n [\")\", 1],\n [\"]\", 2],\n [\"}\", 3],\n [\">\", 4]\n ])\n let score = 0\n \n for (let char of completion) {\n score *= 5\n score += charScore.get(char)\n }\n return score\n}","pinned":true,"hidden":false,"mode":"ojs"},{"id":91,"value":"function completeLine(stack) {\n let closingMatch = new Map([\n [\"(\", \")\"],\n [\"[\", \"]\"],\n [\"{\", \"}\"],\n [\"<\", \">\"]\n ])\n\n return stack.reverse().map( opening => closingMatch.get(opening))\n}","pinned":true,"hidden":false,"mode":"ojs"},{"id":10,"value":"# Input","pinned":false,"hidden":false,"mode":"md"},{"id":33,"value":"test = `[({(<(())[]>[[{[]{<()<>>\n[(()[<>])]({[<{<<[]>>(\n{([(<{}[<>[]}>{[]{[(<()>\n(((({<>}<{<{<>}{[]{[]{}\n[[<[([]))<([[{}[[()]]]\n[{[{({}]{}}([{[{{{}}([]\n{<[[]]>}<{[{[{[]{()[[[]\n[<(<(<(<{}))><([]([]()\n<{([([[(<>()){}]>(<<{{\n<{([{{}}[<[[[<>{}]]]>[]]`.split(\"\\n\")","pinned":true,"hidden":false,"mode":"ojs"},{"id":22,"value":"input = FileAttachment(\"10_input.txt\").text().then( txt => txt.trim().split(\"\\n\"))","pinned":true,"hidden":false,"mode":"ojs"}],"files":"$W31","stdlib":"1","titling":"auto"}