2e:null 2f:["$","title",null,{"children":"AoC 2019, Day 4: Secure Container | Jordan Running | Observable"}] 34:[] 32:{"id":"4b4a59717f0ce6fd","slug":"aoc-2019-day-4-secure-container","title":"AoC 2019, Day 4: Secure Container","thumbnail":"46fae5c59198272877ae335cecb581f3b9c43f5c3aad20703d82858754d83c10","access_level":"public","create_time":"$D2019-12-04T18:27:20.769Z","update_time":"$D2019-12-04T18:28:59.084Z","view_time":null,"first_public_time":"$D2019-12-04T18:29:03.396Z","has_unpublished_edits":null,"fork":false,"stars":1,"starred":false,"owner":{"type":"team","id":"df5b8f89744ab529","login":"jrunning","name":"Jordan Running","avatar_url":"https://avatars-next.observableusercontent.com/e72d7abc8db9954d704f85afa6bc2c66581a5ec0d30ebd00f56ae23d933944bd","tier":"starter_2024"},"version":38,"publish_version":38,"role":null,"authored":false,"authors":[{"type":"individual","id":"6130700aeb5dae38","login":"jrunning","name":"Jordan Running","avatar_url":"https://avatars-next.observableusercontent.com/e72d7abc8db9954d704f85afa6bc2c66581a5ec0d30ebd00f56ae23d933944bd","tier":null}],"members":[{"type":"individual","id":"6130700aeb5dae38","login":"jrunning","name":"Jordan Running","avatar_url":"https://avatars-next.observableusercontent.com/e72d7abc8db9954d704f85afa6bc2c66581a5ec0d30ebd00f56ae23d933944bd","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":false,"trashed":false,"lapsed":null,"subscribed":null,"forks":1,"collection":{"id":"469040e4a7233bf4","slug":"advent-of-code-2019","title":"Advent of Code 2019","owner":{"id":"df5b8f89744ab529","login":"jrunning","name":"Jordan Running"}},"type":"notebook","body":{"title":"AoC 2019, Day 4: Secure Container","cells":[{"id":0,"value":"md`# AoC 2019, Day 4: Secure Container`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":8,"value":"md`## Input`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":11,"value":"viewof input = html``","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":5,"value":"md`## Part 1`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":15,"value":"parseRange = str => str.split('-').map(Number)","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":18,"value":"function* digitIterator(n) {\n yield n % 10;\n if ((n = Math.floor(n / 10))) {\n yield* digitIterator(n);\n }\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":21,"value":"function isValidPassword(n) {\n let hasRepeatingDigits = false;\n let prevDigit = Infinity;\n for (let digit of digitIterator(n)) {\n if (digit > prevDigit) {\n return false;\n }\n hasRepeatingDigits = hasRepeatingDigits || digit === prevDigit;\n prevDigit = digit;\n }\n return hasRepeatingDigits;\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":23,"value":"function countInRange(begin, end, callback) {\n let count = 0;\n for (let i = begin; i <= end; i++) {\n if (callback(i)) {\n count++;\n }\n }\n return count;\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":26,"value":"{\n let answer;\n if (input.trim()) {\n const [begin, end] = parseRange(input);\n answer = html`${countInRange(begin, end, isValidPassword)}`;\n } else {\n answer = html`no input`;\n }\n return md`**Answer:** ${answer}`;\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":30,"value":"md`## Part 2`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":33,"value":"function isValidPassword2(n) {\n let has2RepeatingDigits = false;\n let repeatCount = 0;\n let prevDigit = Infinity;\n for (let digit of digitIterator(n)) {\n if (digit > prevDigit) {\n return false;\n }\n if (digit === prevDigit) {\n repeatCount++;\n } else {\n if (repeatCount === 1) {\n has2RepeatingDigits = true;\n }\n repeatCount = 0;\n }\n prevDigit = digit;\n }\n return repeatCount === 1 || has2RepeatingDigits;\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":35,"value":"{\n let answer;\n if (input.trim()) {\n const [begin, end] = parseRange(input);\n answer = html`${countInRange(begin, end, isValidPassword2)}`;\n } else {\n answer = html`no input`;\n }\n return md`**Answer:** ${answer}`;\n}","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W34","stdlib":"1","titling":"auto"}} 33:"$32:body"