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19 lines
498 B
JavaScript
19 lines
498 B
JavaScript
async function findShortestPath(g,s,e){
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const {default:Q}=await import('https://cdn.skypack.dev/js-priority-queue')
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const d={[s]:0},q=new Q({comparator:(a,b)=>a.w-b.w})
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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(w>(d[n]??Infinity))continue
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if(n===e)return w
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for(const k in g[n]||{}){
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const nw=w+g[n][k]
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if(nw<(d[k]??Infinity)){
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d[k]=nw
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q.queue({n:k,w:nw})
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}
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}
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}
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return Infinity
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}
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export default findShortestPath; |