Check duplicate property values of objects in NSArray

Question

I have an NSArray containing objects with a size property.

How can I check if the NSArray has two objects with the same value

Answer 1

Use NSCountedSet. then add all your objects to the counted set, and use the countForObject: method to find out how often each object appears in your array.

You can check this link also how-to-find-duplicate-values-in-arrays

Hope it helps you