Simple algorithm question - how to reorder a sequence economically

[Chris Angelico]

On Fri, May 24, 2013 at 11:23 PM, Peter Brooks
<peter.h.m.brooks at gmail.com> wrote:
> Actually, thinking about
> it, there is probably a source of non-algorithmically-derived 'random'
> numbers somewhere on the net that would do the job nicely.

True entropy is usually provided by a source such as /dev/random (on
Unix systems). It's sometimes referred to as "cryptographic"
randomness, due to its necessity in secure encryption work. There are
various ways to get this in a cross-platform way.

ChrisA