PHP multidimensional array keys combinations/combinatorics -

-

ok, have assignment php , appreciate assistance. so, let's have multidimensional array one:

$testarray = array(0 => array(10, 20, 30),                    1 => array(50, 60, 70),                    2 => array(80, 90, 100),                    .                    .                    .                    n => array("", "", "",)               );

values in array irrelevant, matters array keys. in case, have 3 keys in each array element, when permutation finished, final result should this:

[0] => array (               [0] => 1 1 1               [1] => 2 1 1               [2] => 3 1 1               [3] => 1 2 1               [4] => 2 2 1               [5] => 3 2 1               [6] => 1 3 1               [7] => 2 3 1               .                .               .               [n] => 3 3 3               )

in case of 4 array keys, final result should this:

[0] = array (              [0] => 1 1 1 1              [1] => 2 1 1 1              [2] => 3 1 1 1              [3] => 4 1 1 1              [4] => 1 2 1 1              .              .              .              [n] => 4 4 4 4             )

i avoid recursion if possible.

im having problems visualizing whole looping process , initializing needed variables. appreciate help. thank you.

i made slight modifications original code in order make use amount of keys instead of array values, , added second function allow multi-dimensional array counted well.

<?php function everycombination($array) {   $newarray = array();   for($keycount = 1; $keycount <= count($array); $keycount++){     $newarray[] = $keycount;   }   $arraycount      = count($newarray);   $maxcombinations = pow($arraycount, $arraycount);   $returnarray     = array();   $conversionarray = array();   foreach ($newarray $key => $value) {     $conversionarray[base_convert($key, 10, $arraycount)] = $value;   }   ($i = 0; $i < $maxcombinations; $i++) {     $combination = base_convert($i, 10, $arraycount);     $combination = str_pad($combination, $arraycount, "0", str_pad_left);     $returnarray[] = strtr($combination, $conversionarray);   }   return $returnarray; }  function getcombos($array){     if(is_array($array[key($array)])){         $return = array();         foreach($array $subarray){             $return[] = everycombination($subarray);         }     }else{         $return = everycombination($array);     }     return $return; }   $test = array(53,22,1233,45);  echo '<pre>'; print_r(getcombos($test)); echo '</pre>';

all credit function , usage goes https://stackoverflow.com/a/14022357/2285345


Comments

Post a Comment

Popular posts from this blog

java - Run spring boot application error: Cannot instantiate interface org.springframework.context.ApplicationListener -

-
i have spring project , try make use spring boot , run @ embadded tomcat following : https://spring.io/guides/gs/rest-service/ this application //@configuration //@enableaspectjautoproxy @springbootapplication @componentscan(basepackages = "gux.prome") public class application { public static void main(string[] args) { springapplication.run(application.class, args); } } if use maven command: mvn spring-boot:run , project starts fine, need debug , run main method @ intelij, exception occurs: exception in thread "main" java.lang.illegalargumentexception: cannot instantiate interface org.springframework.context.applicationlistener : org.springframework.boot.logging.classpathloggingapplicationlistener @ org.springframework.boot.springapplication.createspringfactoriesinstances(springapplication.java:414) @ org.springframework.boot.springapplication.getspringfactoriesinstances(springapplication.java:394) @ org.springframework.bo...
Read more

reactjs - React router and this.props.children - how to pass state to this.props.children -

-
i'm using react-router first time , don't know how think in yet. here's how i'm loading components in nested routes. entry point .js reactdom.render( <router history={hashhistory} > <route path="/" component={app}> <route path="models" component={content}> </route> </router>, document.getelementbyid('app') ); app.js render: function() { return ( <div> <header /> {this.props.children} </div> ); } so child of app content component sent in. i'm using flux , app.js has state , listens changes, don't know how pass state down this.props.children. before using react-router app.js defines children explicitly, passing state natural don't see how now. using couple of react helper methods can add state, props , whatever else this.props.children render: function() { var children = react.ch...
Read more

Excel VBA "Microsoft Windows Common Controls 6.0 (SP6)" Location Changes -

-
i have excel workbook used generate quotations customers. there main page user inputs data, , there buttons generate various pdfs , send them customer. however, 1 user consistently getting error preventing generating , sending pdfs. i beleive "microsoft windows common controls 6.0 (sp6)". it's installed on users' computers. on mine, location "c:\windows\syswow64\mscomctl.ocx" on others "c:\windows\system32\mscomctl.ocx" the user experiencing issues on 32-bit machine, "mscomctl.ocx" file should in system32. have manually put in there, , pointed common controls reference in vba it. issue seems keep reverting looking in syswow64. since folder doesn't exist, can't find it, , can't produce pdfs. i thought perhaps issue user running older version of office (2007) there users on 2013 , 2016. thought perhaps mixture of 64-bit , 32-bit users. user gets sent workbook other users (as quotation process goes further, gets passed ...
Read more