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priorityqueue
Advanced tools
An implementation of priority queue in javascript.
npm install priorityqueue
import PriorityQueue from "priorityqueue";
class Point {
constructor(x, y) {
this.x = x;
this.y = y;
}
}
const numericCompare = (a, b) => (a > b ? 1 : a < b ? -1 : 0);
const comparator = (a, b) => {
const x = numericCompare(a.x, b.x);
const y = numericCompare(a.y, b.y);
return x ? x : y;
};
const pq = new PriorityQueue({ comparator });
pq.push(new Point(4, 6));
pq.push(new Point(2, 3));
pq.push(new Point(5, 1));
pq.push(new Point(1, 2));
console.log(pq.pop()); // => {x: 5, y: 1}
console.log(pq.top()); // => {x: 4, y: 6}
pq.push(new Point(3, 4));
pq.push(new Point(6, 5));
console.log(pq.length); // => 5
console.log(pq.top()); // => {x: 6, y: 5}
Binary heap is a simple and efficient in almost cases.
cons:
merge
operation especiallypros:
merge
operation(constant time)pros:
merge
operation(constant time)Not to use:
import PriorityQueue from "priorityqueue";
import BinaryHeap from "priorityqueue/BinaryHeap";
import PairingHeap from "priorityqueue/PairingHeap";
import SkewHeap from "priorityqueue/SkewHeap";
console.log(PriorityQueue === BinaryHeap); // => true
FAQs
An implementation of Priority Queue
The npm package priorityqueue receives a total of 2,628 weekly downloads. As such, priorityqueue popularity was classified as popular.
We found that priorityqueue demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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