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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
• PHPUnit for unit test (100% covered)
• Sphinx and Doxygen for the documentation

Instructions

Using composer: either

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

or create a composer.json file containing

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

and run

$ composer install
Loading composer repositories with package information
...

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;

And run

$ php test.php
[0,1,2,3,4,5,6,7,8,9]

See the examples and benchmarks folders for more information.

Documentation

Run

$ sudo apt install doxygen python3-pip python3-virtualenv
$ virtualenv venv
$ venv/bin/activate
(venv) $ pip install -r docs/requirements.txt
(venv) $ sphinx-build -b html docs/ html/
(venv) $ deactivate
$

if you want to create local documentation with Sphinx.

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: https://packagist.org/packages/chdemko/sorted-collections

All releases can be found here