search
Homephp教程PHP源码多个数组求笛卡尔积
多个数组求笛卡尔积May 24, 2016 pm 12:52 PM
multiple arrays

开发olap自定义立方体报表用到
同事之前没写出来,网上找一个
网上那个比较简洁
把自己写的分享出来,可能比较粗糙

<?php 
$a = array(&#39;A&#39;,&#39;B&#39;,&#39;C&#39;,&#39;D&#39;);
$b = array(1,2,3);
$c = array(&#39;@&#39;,&#39;#&#39;);
print_r(combineDika($a,$b,$c));
/**
 * 所有数组的笛卡尔积
 * 
 * @param unknown_type $data
 */
function combineDika() {
	$data = func_get_args();
	$cnt = count($data);
	$result = array();
	foreach($data[0] as $item) {
		$result[] = array($item);
	}
	for($i = 1; $i < $cnt; $i++) {
		$result = combineArray($result,$data[$i]);
	}
	return $result;
}

/**
 * 两个数组的笛卡尔积
 * 
 * @param unknown_type $arr1
 * @param unknown_type $arr2
 */
function combineArray($arr1,$arr2) {
	$result = array();
	foreach ($arr1 as $item1) {
		foreach ($arr2 as $item2) {
			$temp = $item1;
			$temp[] = $item2;
			$result[] = $temp;
		}
	}
	return $result;
}

                            

2. [图片] 运行结果.jpg多个数组求笛卡尔积 

   1181.jpg

                     

 以上就是多个数组求笛卡尔积的内容,更多相关内容请关注PHP中文网(www.php.cn)!


Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
1 months agoBy尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
4 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.

EditPlus Chinese cracked version

EditPlus Chinese cracked version

Small size, syntax highlighting, does not support code prompt function

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

VSCode Windows 64-bit Download

VSCode Windows 64-bit Download

A free and powerful IDE editor launched by Microsoft