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19 lines
557 B
JavaScript
19 lines
557 B
JavaScript
const findShortestPath = async (g, s, e) => {
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const { default: P } = await import('https://esm.sh/js-priority-queue');
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const q = new P({ comparator: (a, b) => a.w - b.w }), d = { [s]: 0 };
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q.queue({ n: s, w: 0 });
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while (q.length) {
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const { n, w } = 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 k in g[n] || {}) {
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const t = w + g[n][k];
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if (t < (d[k] ?? 1 / 0)) {
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d[k] = t;
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q.queue({ n: k, w: t });
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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; |