PHP实现快速排序算法_PHP教程

function quicksort($seq) {

if (count($seq) > 1) {

$k = $seq[0];

$x = array();

$y = array();

for ($i=1; $i

if ($seq[$i]

$x[] = $seq[$i];

} else {

$y[] = $seq[$i];

}

}

$x = quicksort($x);

$y = quicksort($y);

return array_merge($x, array($k), $y);

} else {

return $seq;

}

}

$arr = array(12,2,16,30,8,28,4,10,20,6,18);

print_r(quicksort($arr));

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