From 2fdbbd79bed58399ab63f92ece74fe6abb450b9c Mon Sep 17 00:00:00 2001 From: Piotr Russ Date: Sat, 12 Dec 2020 10:38:29 +0100 Subject: day11 --- day11/data.js | 103 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ day11/day11-1.js | 43 +++++++++++++++++++++++ day11/day11-2.js | 50 +++++++++++++++++++++++++++ 3 files changed, 196 insertions(+) create mode 100644 day11/data.js create mode 100644 day11/day11-1.js create mode 100644 day11/day11-2.js diff --git a/day11/data.js b/day11/data.js new file mode 100644 index 0000000..e9e8320 --- /dev/null +++ b/day11/data.js @@ -0,0 +1,103 @@ +const data=` +LLLLLLL.LLLLLLLLLLLLLLL.LLL.LLLL.LLLLLLL.L.LLLLLLL.LLLLLL.LLLLLLLL.LLLLL..LLLLLLLLLLLLLLLLLL +LLLLLLL.LLLLLL.LLLL.LLL.LLLLLLLLLL.LLLLLLL.LLLLL.L.LLLLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLL +.LLLLLLLLLLLLLLL.LLLLLL.LLLLLL.LLLLLLLL.LL.LLLLLLL.LLL.LL.LLLLLLLLLLL.LLL..LLLLLLLL.LLLLLLLL +LLLLLLLLLLLLLLL..LLLLLL.LLLLLLLLLLLLL.LLLL.LLLLLLLLLLLL.L.LLLLLLLL.LLLLLLLLLLLLLLLLLLLLLLLLL 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s.length -rowLn && (i+1)%rowLn !== 0 ? s[i+1+rowLn] : '.', // bottom-right + i < s.length -rowLn ? s[i+rowLn] : '.', // bottom + i%rowLn !== 0 && i < s.length -rowLn ? s[i-1+rowLn] : '.', // bottom-left + i%rowLn !== 0 ? s[i-1] : '.', // left + i > rowLn && i%rowLn > 0 ? s[i-1-rowLn] : '.', // top-left + ] + + const taken = around.filter(s => s === '#').length + const free = around.filter(s => s === 'L').length + + return [taken, free] +} + +const round = (str) => { + const newArray = [] + str.split('').forEach((s, i) => { + const [taken, free] = checkSeat(i, str) + if (s === 'L' && taken === 0) { + newArray[i] = '#' + } else if (s === '#' && taken >= 4) { + newArray[i] = 'L' + } else { + newArray[i] = str[i] + } + }) + + const newString = newArray.join('') + return newString === str + ? newString.split('').filter(s => s === '#').length + : round(newString) +} + +console.log(round(string)) diff --git a/day11/day11-2.js b/day11/day11-2.js new file mode 100644 index 0000000..5d72f0f --- /dev/null +++ b/day11/day11-2.js @@ -0,0 +1,50 @@ +const data = require('./data') +const rows = data.split(/\n/g).filter(r => r) +const rowsLn = rows[0].length +const string = rows.join('') + +const checkSeat = (i, s) => { + const lookup = (index, posCheck, next) => { + const nextIndex = next(index) + return posCheck(index) + ? (s[nextIndex] !== '.' ? s[nextIndex] : lookup(nextIndex, posCheck, next)) + : '.' + } + + const around = [ + lookup(i, i => (i >= rowsLn), i => (i-rowsLn)), // Top + lookup(i, i => (i >= rowsLn && (i+1)%rowsLn !== 0), i => (i+1-rowsLn)), // T-R + lookup(i, i => ((i+1)%rowsLn !== 0), i => (i+1)), // Rigth + lookup(i, i => (i < s.length - rowsLn && (i+1)%rowsLn !== 0), i => (i+1+rowsLn)), // B-R + lookup(i, i => (i < s.length - rowsLn), i => (i+rowsLn)), // Bottom + lookup(i, i => (i%rowsLn !== 0 && i < s.length -rowsLn), i => (i-1+rowsLn)), // B-L + lookup(i, i => (i%rowsLn !== 0), i => (i-1)), // Left + lookup(i, i => (i > rowsLn && i%rowsLn > 0), i => (i-1-rowsLn)), // T-L + ] + + const taken = around.filter(s => s === '#').length + const free = around.filter(s => s === 'L').length + + return [taken, free] +} + +const round = (str) => { + const newArray = [] + str.split('').forEach((s, i) => { + const [taken, free] = checkSeat(i, str) + if (s === 'L' && taken === 0) { + newArray[i] = '#' + } else if (s === '#' && taken >= 5) { + newArray[i] = 'L' + } else { + newArray[i] = str[i] + } + }) + + const newString = newArray.join('') + return newString === str + ? newString.split('').filter(s => s === '#').length + : round(newString) +} + +console.log(round(string)) -- cgit v1.2.3