Finding Intersection of NSMutableArrays

Question

I have three NSMutableArray containing names that are added to the lists according to different criterieas.

Here are my arrays pseudocode:

NSMutableA         


        

Answer 1

Have a look at this post.

In short: if you can use NSSet instead of NSArray, then it's trivial (NSMutableSet has intersectSet:).

Otherwise, you can build an NSSet from your NSArray and go back to the above case.