Swift for iOS Algorithms Questions

Focuses on implementing algorithms and data transformations in Swift with attention to iOS platform considerations. Topics include idiomatic Swift constructs, optionals, value versus reference semantics, collection and string manipulation, common algorithmic patterns such as tree and graph traversal, and complex object transformations. Candidates should demonstrate writing efficient Swift code that respects iOS memory and performance constraints, understand automatic reference counting implications, and be able to optimize algorithms for mobile devices and discuss testability and profiling approaches on iOS.