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<?php
$n = array('13','14','55','10','54','2','79','106','89','90','22','60','111','77777','-110','-10','123');
function partition($n,$left,$right)
{
global $n;
$pivot = $n[$left];
$lo=$left;
$hi=$right+1;
while($lo+1!=$hi) {
if($n[$lo+1]<$pivot)
$lo++;
else if($n[$hi-1]>$pivot)
$hi--;
else{
$t=$n[$lo+1];
$n[$lo+1]=$n[$hi-1];
$n[$hi-1]=$t;
$lo++;
$hi--;
}
}
$n[$left]=$n[$lo];
$n[$lo]=$pivot;
return $lo;
}
function quicksort($n,$left,$right)
{
global $n;
$dp = 0;
if ($left<$right) {
$dp=partition($n,$left,$right);
quicksort($n,$left,$dp-1);
quicksort($n,$dp+1,$right);

}
}
quicksort($n,0,sizeof($n)-1);
print_r($n);
?>

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# tar xzvf php-5.2.5.tar.gz
# cd php-5.2.5
./configure --prefix=/home/redadmin/php --with-apxs2=/home/redadmin/apache/bin/apxs --with-mysql=/home/redadmin/mysql --enable-mbstring=all --enable-track-vars
# make && make install
# cp php.ini-dist /home/redadmin/php/lib/php.ini
# c ......
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