And here's another interesting algorithm/structure: Randomized Slide to Front

[H. S. Teoh via Digitalmars-d]

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

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