<?php
$words=array("A", "B", "C", "D");
$combos=array();
getAllWordCombos($words,$combos, array());
print_r($combos);
function getAllWordCombos($words, &$combos, $partial) {
if (count($words)==1) $combos[]=array_merge($partial,$words);
else {
foreach ($words as $i=>$first) {
$cwords=array_slice($words,0);
array_splice($cwords,$i,1);
getAllWordCombos($cwords, $combos, array_merge($partial,array($first)));
}
}
}
preferences:
35.31 ms | 402 KiB | 5 Q