iOS Swift Interview Questions & Answers

In the series you will have access to 4 parts of iOS interview questions and answers with explanation. Then in second section we will look into Swift data structure with implemations as well. Then in last section i will share the list of must do leetcode questions to clear any iOS interview. So if you are preparing for iOS interview, then this is a must do course for you!

Course Overview –

Section 1:

• iOS Interview Questions & Answers with Explanation – PART 1

  • What is optional in Swift?

  • What is double questions?

  • What is Optional chaining?

  • What is Optional Binding?

  • Delegate Vs Notifications

  • Class Vs Struct

  • What is Enum?

  • What is Guard?

  • What is Defer?

  • What is ARC?

• iOS Interview Questions & Answers with Explanation – PART 2

  • MVVM

  • Dynamic Dispatch

  • Dynamic Dispatch Vs Static Dispatch

  • Closure

  • @escaping & @nonescaping

  • What is lazy?

  • [unowned self] & [weak self]

  • Process & Threads

  • Operation & GCD

  • Operation

  • OperationQueue

  • GCD – Grand Central Dispatch

  • What does DispatchGroup do?

  • Codable & Decodable

• iOS Interview Questions & Answers with Explanation – PART 3

  • Any vs AnyObject

  • Access Specifier for swift

  • Generics

  • Core Data Stack

  • Fetch and Add operation for core data

  • Why to use NSFETCHEDRESULTSCONTROLLER?

  • POP: Protocol Oriented Programming

  • KVC & KVO

  • Content Hugging & Compression resistance

  • Remote Push Notification

  • Remote Push Notification – Checklist

  • Singleton Pattern

  • Why Singleton Pattern is bad?

  • Dependency Injection

• iOS Interview Questions & Answers with Explanation – PART 4

  • What is viewDidLayoutSubviews?

  • What is loadView?

  • NSArray Vs Array

  • NSDictionary vs Dictionary

  • NSNumber vs Int

  • Example of Strong & Weak

  • Computed and Stored Properties

  • Property Observer for computed properties

  • Can we use computed or stored properties in extension?

  • Can we write extension for struct/enum/protocol?

  • Is Optional an Enum?

  • Sync vs Async : deadlock situation

  • What is Semaphore?

Section 2 :

• SWIFT DATA STRUCTURE

  • Swift String

  • Swift Collections

  • Quick Sort Swift Implementation

  • Linked List Swift Implementation

  • Stack Swift Implementation

  • Queue Swift Implementation

  • Tree Swift Implementation

Section 3 :

• Summary & Leetcode

  • Course Summary

  • 60 must do leetcode questions list

  • Bonus

I will keep adding more questions in this course to keep this updated. I hope to see you in this course. Good Luck for your interview!

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