Does google use brute force to find webpages?

[zensunni]

When Google searches for websites, does it just do a brute force character cycle of URLs to find all the pages/websites?

If that's the case, then there are probably admin pages galore listed on google.

I'm pretty sure this isn't the case, because anyone who's not secure would probably have their databases deranged from insecure url inputs.

But, maybe the cycle is a little more calculated than that?

Could anyone shed some light on this?

Thanks.