README

Sorted Collection for PHP. Insertion, search, and removal compute in log(n) time where n is the number of items present in the collection. It uses AVL threaded tree [see @Knuth97, 1:320, Sect. 2.3.1] as internal structure.

@Knuth97: Donald E. Knuth, The Art of Computer Programming, Addison-Wesley, volumes 1 and 2, 2nd edition, 1997.

This project uses:

• PHP Code Sniffer for checking PHP code style using Joomla Coding Standards
• PHPUnit for unit test (100% covered)
• phpDocumentor for api documentation

Installation

Using composer: either

$ composer create-project chdemko/sorted-collections:1.0.*@dev; cd sorted-collections

or create a composer.json file containing

{
    "require": {
        "chdemko/sorted-collections": "1.0.*@dev"
    }
}

and run

$ composer install

Create a test.php file containg

<?php
require __DIR__ . '/vendor/autoload.php';

use chdemko\SortedCollection\TreeMap;

$tree = TreeMap::create()->put(
    [1=>1, 9=>9, 5=>5, 2=>2, 6=>6, 3=>3, 0=>0, 8=>8, 7=>7, 4=>4]
);
echo $tree . PHP_EOL;

This should print

[0,1,2,3,4,5,6,7,8,9]

See the examples folder for more information.

Documentation

• http://chdemko.github.io/php-sorted-collections

Citation

If you are using this project including publication in research activities, you have to cite it using (BibTeX format). You are also pleased to send me an email to chdemko@gmail.com.

• authors: Christophe Demko
• title: php-sorted-collections: a PHP library for handling sorted collections
• year: 2014
• how published: http://chdemko.github.io/php-sorted-collections

All releases can be found here