mirror of
https://github.com/multipleof4/lynchmark.git
synced 2026-01-14 16:47:55 +00:00
27 lines
792 B
JavaScript
27 lines
792 B
JavaScript
let PQ;
|
|
export async function findShortestPath(g, s, e) {
|
|
if (!(s in g) || !(e in g)) return Infinity;
|
|
if (!PQ) ({ default: PQ } = await import('https://cdn.skypack.dev/js-priority-queue@0.1.5'));
|
|
const d = new Map([[s, 0]]);
|
|
const q = new PQ({ comparator: (a, b) => a[1] - b[1] });
|
|
const v = new Set();
|
|
q.queue([s, 0]);
|
|
while (q.length) {
|
|
const [n, c] = q.dequeue();
|
|
if (n === e) return c;
|
|
if (v.has(n)) continue;
|
|
v.add(n);
|
|
if (c > (d.get(n) ?? Infinity)) continue;
|
|
for (const [p, w] of Object.entries(g[n] || {})) {
|
|
const t = c + w;
|
|
if (t < (d.get(p) ?? Infinity)) {
|
|
d.set(p, t);
|
|
q.queue([p, t]);
|
|
}
|
|
}
|
|
}
|
|
return d.get(e) ?? Infinity;
|
|
}
|
|
export default findShortestPath;
|
|
// Generation time: 95.484s
|
|
// Result: PASS
|