56 lines
1.2 KiB
JavaScript
56 lines
1.2 KiB
JavaScript
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import { readFileSync } from 'node:fs';
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const input = readFileSync('input', 'utf-8');
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class Range {
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constructor(start, end) {
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this.start = start;
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this.end = end;
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if (this.start > this.end) {
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throw new Error('Invalid range');
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}
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}
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containsRange(range) {
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return (
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this.start <= range.start &&
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this.end >= range.end
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);
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}
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overlaps(range) {
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return (
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(range.start >= this.start && range.start <= this.end) ||
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(this.start >= range.start && this.start <= range.end)
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);
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}
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}
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const pairs = input
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.split('\n')
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.filter(line => line)
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.map(line => line
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.split(',')
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.map(range => new Range(...range
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.split('-')
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.map(num => parseInt(num))
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))
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);
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const containedPairCount = pairs
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.map(pair =>
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pair[0].containsRange(pair[1]) ||
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pair[1].containsRange(pair[0])
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)
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.reduce((total, contains) => total + Number(contains), 0);
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console.log(`Contained pair count: ${containedPairCount}`);
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const overlappingPairCount = pairs
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.map(pair => pair[0].overlaps(pair[1]))
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.reduce((total, overlaps) => total + Number(overlaps), 0)
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console.log(`Overlapping pair count: ${overlappingPairCount}`);
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