There shouldn't be any difference between passing an integer array and a string from one ViewController to another.
Sending data between ViewControllers is relatively simple, Here's a link to something I found useful when I first sent data between ViewControllers.
Passing Data between View Controllers
Make sure your array declaration is strong:
@property (nonatomic, strong)NSMutableArray *exampleArray;
Edit: Trying to pass an integer array would be a lot more work than holding your values inside an NSMutableArray or NSArray since you cannot declare a c-style array as a property without a work-around as can seen in this post Create an array of integers property in Objective C
If you look at robottobor's answer on that link you will see how you can implement the array as a property, but again I strongly suggest you use an NSMutableArray or NSArray.