doubly-linked-list-typed/dist/data-structures/heap/max-heap.js

Doubly Linked List

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.MaxHeap = void 0;
const heap_1 = require("./heap");
/**
 * 1. Complete Binary Tree: Heaps are typically complete binary trees, meaning every level is fully filled except possibly for the last level, which has nodes as far left as possible.
 * 2. Heap Properties: The value of each parent node is greater than or equal to the value of its children.
 * 3. Root Node Access: In a heap, the largest element (in a max heap) or the smallest element (in a min heap) is always at the root of the tree.
 * 4. Efficient Insertion and Deletion: Due to its structure, a heap allows for insertion and deletion operations in logarithmic time (O(log n)).
 * 5. Managing Dynamic Data Sets: Heaps effectively manage dynamic data sets, especially when frequent access to the largest or smallest elements is required.
 * 6. Non-linear Search: While a heap allows rapid access to its largest or smallest element, it is less efficient for other operations, such as searching for a specific element, as it is not designed for these tasks.
 * 7. Efficient Sorting Algorithms: For example, heap sort. Heap sort uses the properties of a heap to sort elements.
 * 8. Graph Algorithms: Such as Dijkstra's shortest path algorithm and Prim's minimum-spanning tree algorithm, which use heaps to improve performance.
 */
class MaxHeap extends heap_1.Heap {
    constructor(elements = [], options) {
        super(elements, Object.assign({ comparator: (a, b) => {
                if (typeof a === 'object' || typeof b === 'object') {
                    throw TypeError(`When comparing object types, a custom comparator must be defined in the constructor's options parameter.`);
                }
                if (a < b)
                    return 1;
                if (a > b)
                    return -1;
                return 0;
            } }, options));
    }
    /**
     * The `clone` function returns a new instance of the `MaxHeap` class with the same properties as the
     * current instance.
     * @returns The `clone()` method is returning a new instance of the `MaxHeap` class with the same
     * properties as the current instance.
     */
    clone() {
        return new MaxHeap(this, { comparator: this.comparator, toElementFn: this.toElementFn });
    }
    /**
     * Time Complexity: O(n)
     * Space Complexity: O(n)
     *
     * The `filter` function creates a new MaxHeap object containing elements that pass a given callback
     * function.
     * @param callback - The `callback` parameter is a function that will be called for each element in
     * the heap. It takes three arguments: the current element, the index of the current element, and the
     * heap itself. The callback function should return a boolean value indicating whether the current
     * element should be included in the filtered list
     * @param {any} [thisArg] - The `thisArg` parameter is an optional argument that specifies the value
     * to be used as `this` when executing the `callback` function. If `thisArg` is provided, it will be
     * passed as the `this` value to the `callback` function. If `thisArg` is
     * @returns The `filter` method is returning a new `MaxHeap` object that contains the elements that pass
     * the filter condition specified by the `callback` function.
     */
    filter(callback, thisArg) {
        const filteredList = new MaxHeap([], { toElementFn: this.toElementFn, comparator: this.comparator });
        let index = 0;
        for (const current of this) {
            if (callback.call(thisArg, current, index, this)) {
                filteredList.add(current);
            }
            index++;
        }
        return filteredList;
    }
    /**
     * Time Complexity: O(n log n)
     * Space Complexity: O(n)
     *
     * The `map` function creates a new heap by applying a callback function to each element of the
     * original heap.
     * @param callback - The `callback` parameter is a function that will be called for each element in
     * the heap. It takes three arguments: `el` (the current element), `index` (the index of the current
     * element), and `this` (the heap itself). The callback function should return a value of
     * @param comparator - The `comparator` parameter is a function that defines the order of the
     * elements in the heap. It takes two elements `a` and `b` as arguments and returns a negative number
     * if `a` should be placed before `b`, a positive number if `a` should be placed after
     * @param [toElementFn] - The `toElementFn` parameter is an optional function that converts the raw
     * element `RR` to the desired type `T`. It takes a single argument `rawElement` of type `RR` and
     * returns a value of type `T`. This function is used to transform the elements of the original
     * @param {any} [thisArg] - The `thisArg` parameter is an optional argument that allows you to
     * specify the value of `this` within the callback function. It is used to set the context or scope
     * in which the callback function will be executed. If `thisArg` is provided, it will be used as the
     * value of
     * @returns a new instance of the `MaxHeap` class with the mapped elements.
     */
    map(callback, comparator, toElementFn, thisArg) {
        const mappedHeap = new MaxHeap([], { comparator, toElementFn });
        let index = 0;
        for (const el of this) {
            mappedHeap.add(callback.call(thisArg, el, index, this));
            index++;
        }
        return mappedHeap;
    }
}
exports.MaxHeap = MaxHeap;