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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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20
Task/Find-the-missing-permutation/PHP/find-the-missing-permutation.php Normal file
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<?php
$finalres = Array();
function permut($arr,$result=array()){
global $finalres;
if(empty($arr)){
$finalres[] = implode("",$result);
}else{
foreach($arr as $key => $val){
$newArr = $arr;
$newres = $result;
$newres[] = $val;
unset($newArr[$key]);
permut($newArr,$newres);
}
}
}
$givenPerms = Array("ABCD","CABD","ACDB","DACB","BCDA","ACBD","ADCB","CDAB","DABC","BCAD","CADB","CDBA","CBAD","ABDC","ADBC","BDCA","DCBA","BACD","BADC","BDAC","CBDA","DBCA","DCAB");
$given = Array("A","B","C","D");
permut($given);
print_r(array_diff($finalres,$givenPerms)); // Array ( [20] => DBAC )