<?php
function countUnique($a)
{
$acv=array_count_values($a);
$n=0;
foreach ($acv as $f) if ($f==1) $n++;
return $n;
}
function countUniqueTML($a)
{
return array_reduce(
array_count_values($a),
function($c, $i) { return ($i === 1) ? $c + 1 : $c; },
0);
}
function countUniqueGG($a)
{
$cardinal=[];
foreach($a as $v)
if (isset($cardinal[$v])) $cardinal[$v] = 0; else $cardinal[$v] = 1;
return array_sum($cardinal);
}
$a=[1,1,2,2,2,5,6];
echo countUniqueTML($a);
echo "\n";
echo countUnique($a);
echo "\n";
echo countUnique($a);
- Output for 7.0.0 - 7.0.23, 7.1.0 - 7.1.20, 7.2.6 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.26, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2
- 2
2
2
preferences:
52.66 ms | 407 KiB | 5 Q