Math question

[baddog]

Three pages?

[D]

Three pages?

Seems so.

Basic math gets mad views.

Start a thread attempting to discuss google eigenvalues for determinging pagerank, though, and you'll get 8 views, and no replies.

[Nicky]

This has became a very educational thread.. Never new that there are so many Math genius here

math geniuses? I really wouldn't call my self a math genius for solving that

[just a punk]

Seems so.

Basic math gets mad views.

Start a thread attempting to discuss google eigenvalues for determinging pagerank, though, and you'll get 8 views, and no replies.

Because you''ll get a RIGHT answer in the 1st reply and there will be nothing to discuss. E.g.:

<?
define('GOOGLE_MAGIC', 0xE6359A60);

//unsigned shift right
function zeroFill($a, $b)
{
    $z = hexdec(80000000);
        if ($z & $a)
        {
            $a = ($a>>1);
            $a &= (~$z);
            $a |= 0x40000000;
            $a = ($a>>($b-1));
        }
        else
        {
            $a = ($a>>$b);
        }
        return $a;
}


function mix($a,$b,$c) {
  $a -= $b; $a -= $c; $a ^= (zeroFill($c,13));
  $b -= $c; $b -= $a; $b ^= ($a<<8);
  $c -= $a; $c -= $b; $c ^= (zeroFill($b,13));
  $a -= $b; $a -= $c; $a ^= (zeroFill($c,12));
  $b -= $c; $b -= $a; $b ^= ($a<<16);
  $c -= $a; $c -= $b; $c ^= (zeroFill($b,5));
  $a -= $b; $a -= $c; $a ^= (zeroFill($c,3));   
  $b -= $c; $b -= $a; $b ^= ($a<<10);
  $c -= $a; $c -= $b; $c ^= (zeroFill($b,15));
   
  return array($a,$b,$c);
}

function GoogleCH($url, $length=null, $init=GOOGLE_MAGIC) {
    if(is_null($length)) {
        $length = sizeof($url);
    }
    $a = $b = 0x9E3779B9;
    $c = $init;
    $k = 0;
    $len = $length;
    while($len >= 12) {
        $a += ($url[$k+0] +($url[$k+1]<<8) +($url[$k+2]<<16) +($url[$k+3]<<24));
        $b += ($url[$k+4] +($url[$k+5]<<8) +($url[$k+6]<<16) +($url[$k+7]<<24));
        $c += ($url[$k+8] +($url[$k+9]<<8) +($url[$k+10]<<16)+($url[$k+11]<<24));
        $mix = mix($a,$b,$c);
        $a = $mix[0]; $b = $mix[1]; $c = $mix[2];
        $k += 12;
        $len -= 12;
    }

    $c += $length;
    switch($len)             
    {
        case 11: $c+=($url[$k+10]<<24);
        case 10: $c+=($url[$k+9]<<16);
        case 9 : $c+=($url[$k+8]<<8);
        case 8 : $b+=($url[$k+7]<<24);
        case 7 : $b+=($url[$k+6]<<16);
        case 6 : $b+=($url[$k+5]<<8);
        case 5 : $b+=($url[$k+4]);
        case 4 : $a+=($url[$k+3]<<24);
        case 3 : $a+=($url[$k+2]<<16);
        case 2 : $a+=($url[$k+1]<<8);
        case 1 : $a+=($url[$k+0]);
         /* case 0: nothing left to add */
    }
    $mix = mix($a,$b,$c);
    return $mix[2];
}

function strord($string) {
    for($i=0;$i<strlen($string);$i++) {
        $result[$i] = ord($string{$i});
    }
    return $result;
}

function getrank($url) {
$url = 'info:'.$url;
$ch = GoogleCH(strord($url));

$file = "http://www.google.com/search?client=navclient-auto&ch=6$ch&features=Rank&q=$url";
$data = file($file);
$rankarray = explode (':', $data[0]);
$rank = $rankarray[2];
return $rank;
}

$url = "http://www.gfy.com";
echo 'GFY PageRank is '.getrank($url);
?>

No one is interested to discuss something everyone knows about

math geniuses? I really wouldn't call my self a math genius for solving that

I believe he was being sarcastic

[yahoo-xxx-girls.com]

Bump... for the sake of math...


^^

.

[D]

Because you''ll get a RIGHT answer in the 1st reply and there will be nothing to discuss. E.g.:...

That's cool code - thanks for that...

But I'm thinking that's gotta be a "for example" kinda thing... there's gotta be more than 3 columns in the matrix... maybe 3 columns of columns... of columns...

[GrouchyAdmin]

Jesus.. A rudimentary calloc() in PHP completed with bitshifting.

I'm gonna go get drunk before I see that in production.

[yahoo-xxx-girls.com]

... Bump...




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