mirror of
https://github.com/seigler/advent-of-code-2020
synced 2025-07-25 23:36:10 +00:00
Day 11, part one
This commit is contained in:
repl.it user
parent
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commit
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"author": "John Beech",
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"license": "ISC",
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"dependencies": {
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"deep-equal": "^2.0.5",
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"express": "^4.16.4",
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"pre-push": "*",
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"promise-path": "*",
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98
solutions/day11/input.txt
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98
solutions/day11/input.txt
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LLLLLLLLL.LLLL.LLLLL.LLLLLLLLLL.LLLLLLLLLLLLLLLL.LLLLLL.LLLLLLLLLLLLLLLLLL.LLLLLLL.LLLLLLLL
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LLLLLLLLL.LLLL.LLLLLLLLLLLL.LLLLLLLLLLLLL.LLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLL
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LLLLLLLLL.LLLL.LLLLL.LLLLLL.LLLLLLLL.LLLLLLLLLLL.LLLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLL.LLLLLLLL
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LLLLLLLL..LLLL.LLLLL.LLLLLL.LLLLLLLL.LLLLLLLLLLL.LLLLLL.LLLLLLLL.LLLLLLLLLLLLLLL.LLLLLLLL.L
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LLLL.LLLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLLLL.LLLLLL.LLLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLL.LLLLLLLL
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LLLLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLL.LLLLLLLL
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......L.LL.....L.L..L.....L.L..LL.L.LL.L...L..L..............L..L......LL.....LL...L.L.....
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LLLLLLLLL.LLLL.LLLLLLLLLLLL.LLLLLLLLLLLLL..LLLLLLLLLLLL.LLLLLLLL.LLLLLLLL..LLLLLLL.LLLLLLLL
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LLLLLLLLLLLLLL.LLLLL.LLLLLLLLLLLLLLL.LLLLLLLLLLL.LLLLLL.LLLLLLLL.LLLLLLLLL.LLLLLLL.LLLLLLLL
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LLLLLLLLLLLLLL.LLLLLLLLLLLL.LLLLLLLLLLLLLLLLLLLL.LLLLLL.LLLLLLLL.LLLLLLLLLLLLLLLLL.LLL.LLLL
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LLLLLLLLL.LLLL.LLLLL.LLLLLLLLLLLLLLLLLLLL.LLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLL.LLLLLLLL
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LLLLLLLLL..LLL.LLLLL.LLLLLL.LLLLLLLLLLLLLLLLLLLL.LLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL
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...L..L....LL.L.L......LLLLL.....LL....L.......L.LL.L.L.L..LL...LLLLLL.LL........L.L.......
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LLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLLL.LLLL.LLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLL.LLLLLLLL
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LLLLLLLLLLLLLL.LLLLLLLLLLLL.LLLLLLLL.LLLL.LLLLLL.LLLLLL.LLLLLLLL.LLLLLLLLL.LLLLLLLLLLLLLLLL
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.LLLLLLLL.LLLL..LLLL.LLLLLL.LLLLLLLL.LLLL.LLLLLLLLLLLLL.LLLLLLLL.LLLLLLLLL.LLLLLLLL.LLLLLLL
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LLLLLLLLL.LLLL.LLLLL.LLLLLL.LLLLLLLLLLLLL.LLLLLL.LLLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLL.LLLLLLLL
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LLLLLLLLL.LLLLLLLLLLLLLLLLL.LLLLLLLL.LLLL.LLLLLL.LLLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLL.LL.LLLLL
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LLLLLLLLL.LLLL.LLLLL.LLLLLLLLLLLLLLL.LLLLLLLLLLL.LLLLLL.LLLLLLLL.LLLLLL.LL.LLLLLLL.LLLLLLLL
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LLLLLLLLL.L.LL.LLLLLLLLLLLLLLLLLLLLL.LLLL.LLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLLLLL.LLLLLLLL
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LLLLLLLLL.LLLLLLLLLLLL.LLLL.LLLLLLLLLLLLL.LLLLLL.LLLLLL.LLLLLLLL.LLLLLLLLL.LLLLLLL.LLLLLLLL
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......L.L..L.L...LLL.....L.L..L......LL...L..L..L.L......L.L..L....LLLL....L..L....L.L..L.L
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LLLLLL.LL.LLLLLLLLLL.LLLLLL.LLLLLLLL.LLLL.LLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLL.LLLLLLL.LLLLLLLL
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LLLLLLLLL.LLLL.LLLLL.LLLLLL.LLLLLLLLLLLLL.LLLLLLLLLLLLL.LLLLLLLL.LLL.LLLLL.LLLLLLL.LLLLLLLL
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LLLLLLLLLLLLLL.LLLLL.LLLLLL.LLLLLLLL.LLLLL.LLLLLLLLLLLL.LLLLLLLL.LLLLLLLLL.LLLLLLLLLLLLLLLL
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.LLL......L........L.....L..LL.L..L..L.L....L.L............L...........LLL..L..LL....LL..L.
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LLLLLLLLLLLLLL.LLLLL.LLLLLL.LLLLLLLL.LLLL.LLLLLL.LLLLLLLLLLLLLLL.LLLLLLLLL.LLLLLLL.LLLLLLLL
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.L..LLL.L....LL.L..L..LL..L.LL.L......L........LLL.....L..LL...L.LL.LL.....L....L..LL.L....
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LLLLLLLLL.LLLLLLLLLL.LLLLLLLLLLLLLLL.LLLL.LLLLLLLLLLLLL.LLLLLLL..LLLLLLLLL.LLLLLLLLLLLLLLLL
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LLLLLLLLL.LLLL.LLLLL.LLLLLL.LLLLLLLLLLLLLLLLLLLL.LLLLLL.LLLLLLLLLLLLLLLLLL.LLLLLLL.LLLLLLLL
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L..L.LL....L..LL.L.....L.....L...L..L..L...L....L.L.L..LL.L......L...L......L....L.....L.L.
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LLLLLLLLL.LLLL.LLLLL.LLLLLL.LLLLLLLL.LLLL.LLLLLL.LLLLLLLLLLLLLLL..LLLLLLLL.LLLLLLL.LLLLLLLL
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LLLLLLLLLLLLLLLLLLLL.LLLLLLLLLLLLLLL.LLLL.LLLLLL.LLLLLL.LLLLLLLL.LLLLLLLLL.LLLLLLLLLLLLLLLL
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LLL..L....L.LL..L.L.LLL.LL..L.......L.LL..L..L....L..L...L...L.L..L.L.L.L.L.L.LLL.L.....L.L
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LLLLLLLLL.LLLLLLLLLL.LLLLLL.LLLLL.LLLLLLL.LL.LLL.LLLLLLLLLLLLLLLLLLLLLLLLL.LLLLLL..LLLLLLLL
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LLLLLLLLLLLLLL.LLLLL.LLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL.LLLLLLLL.LLLLLLLLL.LLLLLLLLLL.LLLLL
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73
solutions/day11/solution.js
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73
solutions/day11/solution.js
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const path = require('path')
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const { read, position } = require('promise-path')
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const fromHere = position(__dirname)
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const report = (...messages) => console.log(`[${require(fromHere('../../package.json')).logName} / ${__dirname.split(path.sep).pop()}]`, ...messages)
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async function run () {
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let input = (await read(fromHere('input.txt'), 'utf8')).trim().split('\n')
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input = input.map(line => line.split(''))
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await solveForFirstStar(input)
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await solveForSecondStar(input)
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}
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function draw (input) {
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for (const row of input) {
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console.log(row.join(''))
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}
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}
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function neighbors (input, row, col) {
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let total = 0
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if (input[row - 1]) {
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if (input[row - 1][col - 1] === '#') total++
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if (input[row - 1][col] === '#') total++
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if (input[row - 1][col + 1] === '#') total++
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}
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if (input[row][col - 1] === '#') total++
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if (input[row][col + 1] === '#') total++
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if (input[row + 1]) {
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if (input[row + 1][col - 1] === '#') total++
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if (input[row + 1][col] === '#') total++
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if (input[row + 1][col + 1] === '#') total++
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}
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return total
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}
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function step (input) {
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const next = JSON.parse(JSON.stringify(input))
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input.forEach((row, y, rows) => {
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row.forEach((seat, x, seats) => {
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if (seat === 'L' && neighbors(input, y, x) === 0) { next[y][x] = '#' }
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if (seat === '#' && neighbors(input, y, x) >= 4) { next[y][x] = 'L' }
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})
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})
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return next
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}
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function stabilize(input) {
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// console.log('\nInput\n--------')
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// draw(input)
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let rounds = 1; let old; let fresh = input
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do {
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old = fresh
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fresh = step(old)
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// console.log(`\nRound ${rounds}\n--------`)
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// draw(fresh)
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rounds++
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} while (JSON.stringify(old) !== JSON.stringify(fresh))
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return fresh
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}
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async function solveForFirstStar (input) {
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const stable = stabilize(input)
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const filledSeats = stable.flat(2).filter(x => x=='#').length
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report('Solution 1:', filledSeats)
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}
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async function solveForSecondStar (input) {
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const solution = 'UNSOLVED'
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report('Solution 2:', solution)
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}
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run()
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43
solutions/day11/viewer.html
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43
solutions/day11/viewer.html
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<!DOCTYPE html>
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<html>
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<head>
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<title>Solution Viewer</title>
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<style>
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html, body { font-family: sans-serif; }
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pre { border-radius: 0.5em; padding: 0.5em; background: #eee; }
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</style>
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<script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script>
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<script src="https://cdn.jsdelivr.net/npm/vue"></script>
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</head>
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<body>
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<div id="viewer">
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<h1>Solution Viewer ({{ solutionTitle }})</h1>
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<p>For interesting problems; this page can be used as a dynamic viewer.</p>
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<h3><a href="./input.txt">input.txt</a></h3>
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<pre><code>{{ inputText }}</code></pre>
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<h3><a href="./solution.js">solution.js</a></h3>
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<pre><code>{{ solutionText }}</code></pre>
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</div>
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<script>
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const app = new Vue({
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el: '#viewer',
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data: () => {
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return {
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solutionText: '[Loading]',
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inputText: '[Loading]'
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}
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},
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computed: {
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solutionTitle() {
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const parts = (document.location + '').split('/')
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return parts.reverse()[1]
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}
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},
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async mounted () {
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this.solutionText = (await axios.get('./solution.js')).data
|
||||
this.inputText = (await axios.get('./input.txt')).data
|
||||
}
|
||||
})
|
||||
</script>
|
||||
</body>
|
||||
</html>
|
||||
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Add table
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Reference in a new issue