Heap Class in PHP

The Heap class is an implementation of a Max Heap data structure in PHP. A Heap is a complete binary tree where the value of each node is greater than or equal to the values of its children, which makes it useful for efficiently finding the maximum element.

Features

• Heap Construction: Initialize the heap with an array and build a max heap.
• Insert: Add a new element to the heap.
• Remove: Remove a specific element from the heap.
• Sort: Perform heap sort and return the array sorted in ascending or descending order.

Installation

Install the Heap class via composer:

composer require affinity4/heap

Usage

Here is an example of how to use the Heap class:

<?php

require_once __DIR__ . '/vendor/autoload.php';

use Affinity4\Heap\Heap;

// Initialize the heap with an array
$initialArray = [3, 10, 5, 1, 2, 7];
$heap = new Heap($initialArray);

// Insert a new value
$heap->insert(12);

// Sort the heap
$sortedArray = $heap->sort();
echo "Sorted Array: " . implode(', ', $sortedArray) . "\n";

// Remove a value from the heap
$heap->remove(5);
echo "Heap after removing 5: " . implode(', ', $heap->heap) . "\n";

Tests

Run tests with:

./vendor/bin/phpunit