Round 1 — DSA Round (1 hour):
1 — Find the intersection in 2 linked lists. ✅
2 — Print leaf nodes of a tree. ✅
Round 2 — iOS Round (1 hour):
- Basic of Swift
- Concurrency in swift:
Concurrency in Swift has been traditionally achieved using Grand Central Dispatch (GCD), which dispatches tasks to different queues, and NSOperation, which provides a higher-level API to manage operations. With the introduction of Swift’s new concurrency model, developers now also have native tools like async/await for asynchronous code, tasks for managing units of work, and actors for protecting shared mutable state. - Class vs Structures:
- Class is a reference type and is stored in the heap part of memory which makes a class comparatively slower than a struct in terms of performance.
- Unlike a class, a struct is created on the stack. So, it is faster to instantiate (and destroy) a struct than a class. Unless struct is a class member in which case it is allocated in heap, along with everything else.
- Use classes if you want reference types. Use structs if you want value types.
- Value types do not need dynamic memory allocation or reference counting, both of which are expensive operations. At the same time methods on value types are dispatched statically. These create a huge advantage in favor of value types in terms of performance.
Final Round — System Design + Hiring Manager (1.5 hours)
- Discussions on past projects and work
- A basic banking application design
