diff options
| -rw-r--r-- | day20/data.js | 1731 | ||||
| -rw-r--r-- | day20/day20-1.js | 40 |
2 files changed, 1771 insertions, 0 deletions
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+Tile 1747: +.##.#.#### +##.#.##### +.........# +#..#..#... +..##...... +....##...# +..##.##... +.##....### +#.###....# +#.#..#.#.. + +Tile 1933: +.######... +#..#.###.# +.....#..#. +......##.# +.#..#...## +...#....#. +.##..###.# +#...#.#... +#....#...# +..#....... + +Tile 2237: +.#.#...#.. +.#.##..### +.......... +#....#.... +#.##...#.. +#.....#.#. +.........# +#.......#. +.####.#.## +#.#...#.#. + +Tile 3793: +#.#..####. +.#.#..#..# +##..##.#.# +#.#.##.... +.#..#..### +.#.#.#.... +##.....#.# +.#.##...## +#.#...#... +#.#.#.##.. + +Tile 3457: +#####.#.#. +#.##..###. +......#..# +##..##.### +...#.##... +..#.##...# +#...####.# +....#..##. +...#...#.. +#...##.#.. + +Tile 3313: +....###..# +.#.....#.# +#.#....#.. +..#.##.#.. +##.#..#.## +.....#..#. +.#..#..... +#..#....#. +#..#...... +.####.#..# + +Tile 2287: +#.##...#.. +....##...# +##...#.... +#.#.....## +#.#.#.#### +....##..#. +##.#...##. +..##.#..## +#.....##.. +##..###..# + +Tile 3659: +..#.##.##. +.........# +##......#. +#.#......# +###.####.# +.#....#..# +.#..#..#.# +.##...#... +#.#...##.. +...#.###.# + +Tile 1607: +#...##..#. +...##.###. +##.#..##.. +#...#..... +#.#...#### +.#.#...... +...#..#... +.###..#..# +#.##.##..# +...##..... + +Tile 3319: +....#..#.# +.#.#...... +#.#.#..... +.......... +##.#...##. +#..##.#... +.........# +.......... +...#.....# +#.##..#### + +Tile 2383: +...#.#.#.# +..##..#### +.##...#... +..#....#.# +..#..#.#.# +##..#..... +.#....##.# +.##...#... +..#...#.#. +##.###.... +` + +module.exports = data diff --git a/day20/day20-1.js b/day20/day20-1.js new file mode 100644 index 0000000..865410d --- /dev/null +++ b/day20/day20-1.js @@ -0,0 +1,40 @@ +const data = require('./data') +const tiles = [] +const getSides = (t) => { + const sides = [t[0], t.map(r=>r[r.length-1]).join(''), t[t.length-1], t.map(r=>r[0]).join('')] + const reversed = sides.map(s => s.split("").reverse().join("")) + return [...sides, ...reversed] +} + +data + .split('\n\n') + .map(s => s.split('\n').filter(Boolean)) + .forEach(s => tiles.push({ + id: parseInt(s[0].match(/[0-9]+/g)[0]), + array: s.slice(1), + sides: getSides(s.slice(1)), + matches: [] + })) + +const check = (t1, t2) => { + for (const s1 of t1.sides) for (const s2 of t2.sides) { + if (s1 === s2) {return s1} + } + return null +} + +for (let i=0; i< tiles.length; i++) for (let j=i+1; j<tiles.length; j++) { + const match = check(tiles[i], tiles[j]) + if (match) { + tiles[i].matches.push({ id: tiles[j].id, side: match }) + tiles[j].matches.push({ id: tiles[i].id, side: match }) + } +} + +const res = tiles + .filter(t => t.matches.length === 2) + .map(t => t.id) + .reduce((a, b) => a * b, 1) + +console.log('Answer: ', res) + |