Compare two binary trees and return true or false if they are same. Anagram question Phone number to alphabet conversion
Sigiloso
It's essential to demonstrate that you can really go deep... there are plenty of followup questions and (sometimes tangential) angles to explore. There's a lot of IOS Engineer experts who've worked at Thumbtack, who provide this sort of practice through mock interviews. There's a whole list of them curated on Prepfully. prepfully.com/practice-interviews