Cognizant

 Tasks

1. How could you reverse a NSArray without using reverse method in Objective-C?
2. Find second max Number from array (1,4,2,1,5,1,1,6) in Swift ? 
3. Write down syntax for NSOperationQueue & GCD
4. Write program in swift to find Unique Characters from your name ?
5. How to integrate firebase crashlytics?

                .dsym file used in xcode for firebase crashlytics.