setdiff

Set difference of two sets of positive integers (much faster than built-in setdiff)

Description

Set difference of two sets of positive integers (much faster than built-in setdiff) which is great if you have to call it million times in a loop.

• MATLAB release: MATLAB 5.3 (R11)

[Ben Petschel]

Neat idea. How does the speed compare when you use sparse and/or logical arrays, e.g. to do setdiff([1,1e9],1) ?