On Mon, Nov 30, 2015 at 04:58:16PM -0500, Steven Schveighoffer via Digitalmars-d wrote: > On 11/30/15 4:50 PM, Andrei Alexandrescu wrote: > >On 11/30/15 4:41 PM, H. S. Teoh via Digitalmars-d wrote: > >>What about when element i is matched, swap it with the (i/2)'th element? > > > >Randomization is essential - without it you have thrashing if you > >search for 2 elements in alternation. -- Andrei > > > > What about selecting a random element in 0..k/2 instead of 0..k-1? [...]
Or selecting the (i/k)'th element for k = uniform(1..i)? T -- People walk. Computers run.
