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A simple method to implement quick sorting in php_PHP tutorial

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2016-07-13 09:58:00938browse

A simple way to implement quick sorting in PHP

This article describes an example of a simple way to implement quick sorting in PHP. Share it with everyone for your reference. The specific implementation method is as follows:

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function quicksort($seq)

{

if(!count($seq)) return $seq;

$k = $seq[0];

$x = $y = array();

for($i=count($seq); --$i;)

{

if($seq[$i] <= $k)

{

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

}

else

{

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

}

}

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

}

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function quicksort($seq) { if(!count($seq)) return $seq; $k = $seq[0]; $x = $y = array(); for($i=count($seq); --$i;) { if($seq[$i] <= $k) { $x[] = $seq[$i]; } else { $y[] = $seq[$i]; } } return array_merge(quicksort($x),array($k),quicksort($y)); }
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