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25 lines
566 B
JavaScript
25 lines
566 B
JavaScript
const findShortestPath = async (g, s, e) => {
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const { default: PQ } = await import('https://esm.sh/js-priority-queue');
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const q = new PQ({ comparator: (a, b) => a.w - b.w });
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const d = { [s]: 0 };
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q.queue({ w: 0, n: s });
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while (q.length) {
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const { w, n } = q.dequeue();
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if (n === e) return w;
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if (w > (d[n] ?? 1 / 0)) continue;
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for (const v in g[n]) {
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const k = w + g[n][v];
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if (k < (d[v] ?? 1 / 0)) {
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d[v] = k;
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q.queue({ w: k, n: v });
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}
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}
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}
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return 1 / 0;
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};
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export default findShortestPath; |