README

Square Matrix

This is a PHP library that intends to provide a fluent API to make working with Square Matrix easier.

Requirements

• PHP 7 or greater

Versions

This project follows semver

Installation

• Add library in your composer.json:

$ composer require trivialmatters/square-matrix

Usage

<?php

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

$data = <<<EOF
3
11 2 4
4 5 6
10 8 -12
EOF;

// or create your own data provider
$data = new Gkirtsou\DataProvider\StringDataProvider($data);
$data->calculateRowsAndColumns();

/**
 * [
 *   [11, 4, 10]
 *   [2, 5, 8]
 *   [4, 6, -12]
 * ]
 */
$data->getColumns();

/**
 * [
 *   [11, 2, 4]
 *   [4, 5, 6]
 *   [10, 8, -12]
 * ]
 */
$data->getRows();

$squareMatrix = new Gkirtsou\SquareMatrix($data);

// get numbers from first column (don't forget PHP starts counting from zero!)
$squareMatrix->getNumbersByColumn(0);

// get numbers from first row (don't forget PHP starts counting from zero!)
$squareMatrix->getNumbersByRow(0);

// diagonal difference
$diagonalDifference = new \Gkirtsou\Diagonal\DiagonalDifference($squareMatrix);

// find the diagonal difference
$diagonalDifference->findDiagonalDifference(); // returns '15'

// find primary diagonal (left to right): returns [11, 5, -12]
$diagonalDifference->findDiagonal(\Gkirtsou\Diagonal\DiagonalDifference::PRIMARY_TYPE);

// find secondary diagonal (right to left): returns [4, 5, 10]
$diagonalDifference->findDiagonal(\Gkirtsou\Diagonal\DiagonalDifference::SECONDARY_TYPE);

Contributions

Want to contribute? Awesome! Please create an Issue in Issue Tracker to discuss about it, and create a Pull Request with your changes. Don't forget to write tests! :)

Installation

• Clone the repository

$ git clone git@github.com:trivialmatters/square-matrix.git

• Run Composer

$ composer install --prefer-dist -o -vvv

Tests

You can run tests using PHPUnit:

$ vendor/bin/phpunit -c phpunit.xml.dist tests