"Russ Cox" <[EMAIL PROTECTED]> wrote:
> Here are the real rules:
>
> - a{0,n} can be replaced by a?a{0,n-1}
> - a{m,n} can be replaced by aa{m-1,n-1}
> - a{0,0} can be replaced by the empty string
> - REPEAT until all the { } are gone
>
> This is just a complicated way of saying you
> can replace a{n,m} with n copies of "a" followed
> by m-n copies of "a?".
>
> RussGot it. Thanks for your patience. I'll be quiet now. -Derek
