Write a function to calculate the nth Fibonacci Number.
Ios Developer Intern Interview Questions
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General questions - about experience, project, etc.
Implement a hash map data structure.
How would you design a flight booking app?
Design a photo stream app
Design Instagram's story
Why do you want to join Slack?
Difference between OperationQueue and GCD
Given a string, how can you confirm if each open bracket has a closed bracket?
Merge 2 sorted linked lists
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