Question

I have two arrays:

array1=[1,2,3,4,5,6,7,8,9,10,11]
array2=[1,2]

I want to compare weather elements in “array2” is present in “array1” or not.
If yes then I need to run a function, otherwise exit.
How to do it?

Answer 1

What about enumerating over array1?

Something along the lines of

NSArray *array1 = ...;
NSArray *array2 = ...;

[array1 enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
    if ([array2 containsObject: obj]) {
        // Run the function you wanted to
    }
}];