标签:binary print function sort bnu 查找 amp else count
$arr = array(4,58,11,34,88,45,32,54,63,78);
function binary($arr,$bnum)
{
if(is_array($arr) && count($arr) > 0)
{
sort($arr);
$start = 0;
$end = count($arr)-1;
$mid = -1;
while($start <= $end)
{
$mid = floor( ($start+$end)/2 );
if($arr[$mid] == $bnum)
{
return $arr[$mid];
}else if($arr[$mid] < $bnum)
{
$start = $mid +1;
}else if($arr[$mid] > $bnum)
{
$end = $mid - 1;
}
}
return -1;
}
}
$mm = binary($arr,32);
print_r($mm);
标签:binary print function sort bnu 查找 amp else count
原文地址:http://www.cnblogs.com/yulei126/p/6786164.html