Last change
on this file was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago |
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[6a3a178] | 1 | "use strict";
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| 2 | /**
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| 3 | * @license
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| 4 | * Copyright Google LLC All Rights Reserved.
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| 5 | *
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| 6 | * Use of this source code is governed by an MIT-style license that can be
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| 7 | * found in the LICENSE file at https://angular.io/license
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| 8 | */
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| 9 | Object.defineProperty(exports, "__esModule", { value: true });
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| 10 | exports.PriorityQueue = void 0;
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| 11 | /** Naive priority queue; not intended for large datasets */
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| 12 | class PriorityQueue {
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| 13 | constructor(_comparator) {
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| 14 | this._comparator = _comparator;
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| 15 | this._items = new Array();
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| 16 | }
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| 17 | clear() {
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| 18 | this._items = new Array();
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| 19 | }
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| 20 | push(item) {
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| 21 | const index = this._items.findIndex((existing) => this._comparator(item, existing) <= 0);
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| 22 | if (index === -1) {
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| 23 | this._items.push(item);
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| 24 | }
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| 25 | else {
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| 26 | this._items.splice(index, 0, item);
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| 27 | }
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| 28 | }
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| 29 | pop() {
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| 30 | if (this._items.length === 0) {
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| 31 | return undefined;
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| 32 | }
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| 33 | return this._items.splice(0, 1)[0];
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| 34 | }
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| 35 | peek() {
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| 36 | if (this._items.length === 0) {
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| 37 | return undefined;
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| 38 | }
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| 39 | return this._items[0];
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| 40 | }
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| 41 | get size() {
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| 42 | return this._items.length;
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| 43 | }
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| 44 | toArray() {
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| 45 | return this._items.slice();
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| 46 | }
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| 47 | }
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| 48 | exports.PriorityQueue = PriorityQueue;
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