[ale] Pattern substitution in VIM?

[ahuitzot at mindspring.com (Mike Panetta)]

Whats the easiest way to swap 2 space seperated items on a line in VIM?
Like (0 1) -> (1 0)?  I am trying to write an eagle script file to generate a
package and knowing how to do something like this in VIM would make my
life much simpler :)

Thanks,
Mike