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Codility – OddOccurrencesInArray

I scored 66% in #php on @Codility!
https://codility.com/demo/take-sample-test/odd_occurrences_in_array/

I don't know how to do better yet.

<?php
// you can write to stdout for debugging purposes, e.g.
// print "this is a debug message\n";
function solution($A) {
$a_count_values = array_count_values($A);
$values = array_keys($a_count_values, 1);
if (is_array($values))
return $values[0];
return $values;
}

Training ticket

Session
ID: training8BGA3Q-8PA
Time limit: 120 min.

Status: closed
Created on: 2016-01-17 03:06 UTC
Started on: 2016-01-17 03:06 UTC
Finished on: 2016-01-17 03:07 UTC

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