efficient idiomatic queue?

[David Eppstein]

In article <7xpu4cglp3.fsf at ruckus.brouhaha.com>,
 Paul Rubin <phr-n2002a at nightsong.com> wrote:

> How's this (untested; uses nested scopes).  It uses extra temp space
> the size of the input, but runs in the correct order time.

Sure, that looks like the straightforward way of doing it using index 
variables.
-- 
David Eppstein       UC Irvine Dept. of Information & Computer Science
eppstein at ics.uci.edu http://www.ics.uci.edu/~eppstein/