Is there a Mathematica 10.2 function (or option) that creates derangements?
Since one doesn't seem to exist, I've used Combinatorica's Derangement function. To avoid conflicts between Combinatorica and Mathematica, I prefix Mathematica functions with System, e.g., System<a href="mailto:Cycles@{{1,2,3}">Cycles@{{1,2,3}} rather than simply Cycles@{{1,2,3}} (if Combinatorica isn't loaded).
But it's irritating to constantly type this prefix. Is there a way to avoid typing the prefix when Combinatorica is loaded?
Thanks.
