On 11/03/13 18:35, Jim - FooBar(); wrote:
Well, java.util.List specifies a retainAll(Collection c) method which
is basically the intersection between the 2 collections (the
Collection this is called on and the argument). You are actually
looking for the 'difference' but if you have the intersection and the
total it's pretty trivial to find the difference.
actually there is a removeAll(Collection c) which will (destructively)
give you exactly what you want...I guess that would be the fastest way
if you don't care about what happens to list A...
hope that helps,
Jim
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