33 lines
781 B
JavaScript
33 lines
781 B
JavaScript
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const { Glib, Maps } = require('../../lib');
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const parse = (input) =>
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Glib.fromSplit(input, '\n\n').map((i) => {
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return Glib.fromSplit(i)
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.map((i) => i.characterFrequencies)
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.reduce(
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({ length, frequencies }, b) => ({
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length: length + BigInt(1),
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frequencies: Maps.add(frequencies, b),
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}),
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{ length: BigInt(0), frequencies: new Map() },
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);
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});
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module.exports = {
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'1': (input) => {
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return parse(input)
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.map(({ frequencies }) => {
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return BigInt(frequencies.size);
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})
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.sum();
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},
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'2': (input) => {
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return parse(input)
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.map(
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({ length, frequencies }) =>
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new Glib(frequencies.values()).filter((i) => i === length).length,
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)
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.sum();
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},
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};
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