39 lines
997 B
JavaScript
39 lines
997 B
JavaScript
function day4(input, part2) {
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let lines = input.split("\n")
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let seq = lines.shift().split(",").num()
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let grids = lines.splitOnElement("").filter((e) => e.length).map((grid) => Grid.fromStr(grid.map((line) => line.replace(/^ /, "")).join("\n"), /\s+/).mapMut((e) => [+e, false]))
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let score
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for (let num of seq) {
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for (let grid of grids) {
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if (grid.won) {
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continue
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}
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let pt = grid.findIndex((e) => e[0] == num)
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if (pt == Point.NONE) {
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continue
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}
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grid.set(pt, [num, true])
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if ([...grid.getRows(), ...grid.getColumns()].some((row) => row.every((e) => e[1]))) {
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grid.won = true
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if (!score || part2) {
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score = grid.findAll((e) => !e[1]).map((e) => e[0]).sum() * num
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}
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}
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}
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}
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return score
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}
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if (typeof window == "undefined") {
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module.exports = day4
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}
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