Lesson 6 – Leader – Dominator demo task solution code written in php. Gives 100/100 score at the time of publishing.
The description of the problem is copyrighted, so please see the following link for it: https://codility.com/demo/take-sample-test/dominator
Solution in php:
function solution($A) {
if(empty($A)){
return -1;
}
$B = array_count_values($A);
arsort($B, SORT_NUMERIC);
list($k, $v) = each($B);
$dom = ($v > count($A)/2) ? $k : null;
if(is_null($dom)){
return -1;
}
foreach($A as $k => &$v){
if($v == $dom){
return $k;
}
}
}
Given “AS IS”, can be ported from other languages from solutions found on the internet, please use with care.
Please note: we think that codility.com does not give a correct assessment of your real-world programming skills. For instance, reading the below would bring more understanding why: http://codility-test-questions.blogspot.com/2013/01/my-experience-with-codility-test.html