2022-12-04 17:37:18 +00:00
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import * as R from "remeda";
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2022-12-04 17:42:17 +00:00
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const overlapsWith = ([a1, a2], [b1, b2]) => a2 >= b1;
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export const solutionPart2 = R.createPipe(
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(text) => text.split("\n"),
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R.filter(R.identity),
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R.map((line) =>
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line.split(",").map((range) => range.split("-").map((x) => parseInt(x)))
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),
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R.map(R.sortBy(([x]) => x)),
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R.countBy(([a, b]) => overlapsWith(a, b))
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);
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