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Deloitte Digital Senior IOS Developer Interview Questions and Answers

Updated 13 Sep 2024

Deloitte Digital Senior IOS Developer Interview Experiences

1 interview found

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
6-8 weeks
Result
Selected Selected

I applied via Approached by Company and was interviewed in Mar 2024. There were 3 interview rounds.

Round 1 - Technical 

(3 Questions)

  • Q1. High Order Function
  • Q2. Solid Principals
  • Q3. Sorting and searching algorithm
  • Ans. 

    Sorting and searching algorithms are essential for efficient data manipulation and retrieval.

    • Sorting algorithms like quicksort, mergesort, and heapsort rearrange elements in a specific order.

    • Searching algorithms like binary search and linear search help find specific elements in a dataset.

    • Efficient algorithms can significantly improve performance in large datasets.

  • Answered by AI
Round 2 - Technical 

(4 Questions)

  • Q1. BLE connectivity
  • Q2. IOS SDK basic functionality
  • Q3. Agile methodology
  • Q4. Retrospective and Scrum
Round 3 - HR 

(1 Question)

  • Q1. Salary discussion

Interview Preparation Tips

Interview preparation tips for other job seekers - Focus on Basics and Swift UI

Skills evaluated in this interview

Interview questions from similar companies

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I appeared for an interview before May 2023.

Round 1 - Technical 

(1 Question)

  • Q1. 1.What is the difference between atomic and nonatomic properties. 2.How do you handle memory management in Swift. 3.Difference between classes and struct in Swift. 4. What is Factorial Pattern.
  • Ans. 

    1. Atomic properties ensure that the value is always fully retrieved or set, while nonatomic properties do not guarantee this. 2. Memory management in Swift is handled automatically using Automatic Reference Counting (ARC). 3. Classes are reference types, while structs are value types in Swift. 4. Factorial pattern is a design pattern used to calculate the factorial of a number.

    • Atomic properties ensure thread safety by...

  • Answered by AI
Round 2 - Technical 

(1 Question)

  • Q1. What is debouncing technique in swift. what is factorial pattern in swift what is dispatch_wait. Explain bluethooth in iOS. Explain InAppPurchases in iOS.
  • Ans. 

    Debouncing technique in Swift is used to limit the rate at which a function is called, preventing it from being called multiple times in a short period.

    • Debouncing involves setting a time threshold and only allowing the function to be called after that threshold has passed without any new calls.

    • It is commonly used in scenarios like search bars or buttons to prevent rapid firing of events.

    • Example: Implementing a search f...

  • Answered by AI

Skills evaluated in this interview

Interview experience
3
Average
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Company Website and was interviewed in Aug 2024. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. Explain MVVM and its pros/cons
  • Ans. 

    MVVM is a design pattern that separates the UI, business logic, and data layers in an iOS application.

    • Model: Represents the data and business logic of the application.

    • View: Represents the UI components of the application.

    • ViewModel: Acts as a mediator between the Model and View, handling the presentation logic and data binding.

    • Pros: Separation of concerns, easier to maintain and test, promotes reusability.

    • Cons: Increase...

  • Answered by AI
  • Q2. Multithreading in swift
  • Ans. 

    Multithreading in Swift allows for concurrent execution of tasks to improve performance and responsiveness.

    • Use Grand Central Dispatch (GCD) for managing concurrent tasks

    • Avoid blocking the main thread to prevent UI freezes

    • Consider using Operation and OperationQueue for more complex task management

  • Answered by AI

Skills evaluated in this interview

I applied via Naukri.com and was interviewed in May 2022. There were 5 interview rounds.

Round 1 - Aptitude Test 

Basic aptitude questions with no negative marking. 20 minutes 30 questions

Round 2 - Coding Test 

2 String manipulation questions

Round 3 - Swift MCQ Test 

(1 Question)

  • Q1. Basic level Swift MCQ Questions
Round 4 - One-on-one 

(1 Question)

  • Q1. 30-45 minutes one on one ios interview, Asked memory management, lifecycle, core data questions
Round 5 - One-on-one 

(1 Question)

  • Q1. 30 minutes one on one ios interview. asked questions around concurrency, why swift is called POP, In detail rigorous interview.

Interview Preparation Tips

Topics to prepare for Nagarro Senior IOS Developer interview:
  • Concurrency
  • Swift Concepts
  • OOPS concepts
  • SOLID priniciples
  • Database
  • Swift Combine
Interview preparation tips for other job seekers - I couldn't make it in 5th round because interviewer doesn't seem to be happy with answers. Overall it was not difficult to crack Nagarro interview but definitely makes you tiresome with so long interview process.
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via LinkedIn and was interviewed in Mar 2024. There were 2 interview rounds.

Round 1 - Aptitude Test 

Complex Question are there like images patter and we have to predict next image

Round 2 - Coding Test 

There are two task for coding. both are easy.

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Auto closures and Escaping closures
  • Q2. Cardinality and string reverse coding
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Company Website and was interviewed in Dec 2023. There was 1 interview round.

Round 1 - Technical 

(2 Questions)

  • Q1. Auto closures and escaping closures
  • Q2. Cardinality and reverse string code

IOS Developer Interview Questions & Answers

Mphasis user image Khushbu Kushwah

posted on 1 Jul 2024

Interview experience
2
Poor
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Some basic Questions related to iOS concepts.
  • Q2. Multithreading and multitasking.
Round 2 - Technical 

(2 Questions)

  • Q1. Advanced iOS Questions.
  • Q2. API Calling, Json Parsing

Interview Preparation Tips

Interview preparation tips for other job seekers - Learn Basic Concepts first.

I appeared for an interview before Mar 2021.

Round 1 - Coding Test 

(2 Questions)

Round duration - 75 minutes
Round difficulty - Medium

This was an online coding round where we had 2 questions to solve under 75 minutes. I found both the questions to be of Easy to Medium level of difficulty.

  • Q1. 

    Line Reflection Problem Statement

    You are given several sets of points on a 2D plane, each set represented as a list of coordinates. Your task is to determine if there exists a line parallel to the Y-axis...

  • Ans. 

    The task is to determine if there exists a line parallel to the Y-axis that reflects given points symmetrically.

    • Iterate through each test case and check if a vertical reflection line exists for the given points

    • Calculate the midpoint of the x-coordinates and check if it reflects the points symmetrically

    • Consider edge cases where points are on the reflection line or have the same x-coordinate

  • Answered by AI
  • Q2. 

    Number of Islands Problem Statement

    You are provided with a 2-dimensional matrix having N rows and M columns, containing only 1s (land) and 0s (water). Your goal is to determine the number of islands in t...

  • Ans. 

    Count the number of islands in a 2D matrix of 1s and 0s.

    • Iterate through the matrix and perform depth-first search (DFS) to find connected 1s.

    • Mark visited cells to avoid redundant traversal.

    • Increment island count whenever a new island is encountered.

  • Answered by AI
Round 2 - Face to Face 

(4 Questions)

Round duration - 60 minutes
Round difficulty - Medium

This round had 2 coding questions followed by some questions from DBMS.

  • Q1. 

    Largest Rectangle in Histogram Problem Statement

    You are given an array/list HEIGHTS of length N, where each element represents the height of a histogram bar. The width of each bar is considered to be 1.

    ...
  • Ans. 

    Find the area of the largest rectangle that can be formed within the bounds of a given histogram.

    • Iterate through the histogram bars and calculate the area of the largest rectangle that can be formed using each bar as the height.

    • Use a stack to keep track of the indices of the bars in non-decreasing order of height.

    • Pop elements from the stack and calculate the area until a smaller height bar is encountered.

    • Update the max...

  • Answered by AI
  • Q2. 

    Valid Parentheses Problem Statement

    Given a string 'STR' consisting solely of the characters “{”, “}”, “(”, “)”, “[” and “]”, determine if the parentheses are balanced.

    Input:

    The first line contains an...
  • Ans. 

    The task is to determine if a given string consisting of parentheses is balanced or not.

    • Iterate through the characters of the string and use a stack to keep track of opening parentheses.

    • If an opening parenthesis is encountered, push it onto the stack.

    • If a closing parenthesis is encountered, check if it matches the top of the stack. If it does, pop the stack, else the string is not balanced.

    • At the end, if the stack is e...

  • Answered by AI
  • Q3. Can you explain the concept of ACID properties in DBMS?
  • Ans. 

    ACID properties in DBMS ensure data integrity and consistency in transactions.

    • Atomicity: All operations in a transaction are completed successfully or none at all.

    • Consistency: Data is always in a valid state before and after a transaction.

    • Isolation: Transactions are isolated from each other to prevent interference.

    • Durability: Once a transaction is committed, changes are permanent and survive system failures.

    • Example: If...

  • Answered by AI
  • Q4. Can you explain the different levels of data abstraction in a DBMS?
  • Ans. 

    Levels of data abstraction in a DBMS refer to the different views of data provided to users and applications.

    • Physical level: Deals with how data is stored on the storage media. Example: data blocks, pages, indexes.

    • Logical level: Focuses on how data is represented to users. Example: tables, views, constraints.

    • View level: Provides a customized view of the database for specific users or applications. Example: queries, rep

  • Answered by AI
Round 3 - Face to Face 

(4 Questions)

Round duration - 60 minutes
Round difficulty - Medium

Standard DS/Algo round with 2 coding questions followed by 2 interesting puzzles.

  • Q1. 

    Cycle Detection in Undirected Graph Problem Statement

    You are provided with an undirected graph containing 'N' vertices and 'M' edges. The vertices are numbered from 1 to 'N'. Your objective is to determi...

  • Ans. 

    Detect if an undirected graph contains a cycle by exploring all possible paths.

    • Use Depth First Search (DFS) algorithm to traverse the graph and detect cycles.

    • Maintain a visited set to keep track of visited vertices and a parent pointer to avoid visiting the same vertex twice.

    • If a visited vertex is encountered that is not the parent of the current vertex, a cycle is present.

    • Consider edge cases like disconnected graphs a

  • Answered by AI
  • Q2. 

    Maximum 1s in a Row Problem

    Given a matrix ARR with dimensions N * M, consisting only of 0s and 1s where each row is sorted, determine the index of the row that contains the highest number of 1s. If multi...

  • Ans. 

    Find the row with the maximum number of 1s in a sorted matrix.

    • Iterate through each row of the matrix and count the number of 1s in each row

    • Keep track of the row index with the maximum number of 1s

    • Return the index of the row with the highest count of 1s

  • Answered by AI
  • Q3. You have two wires of different lengths, each taking different amounts of time to burn completely. How can you use these wires to measure a specific duration of time?
  • Ans. 

    By lighting both wires at the same time, the shorter wire will burn out first, allowing you to measure a specific duration of time.

    • Light both wires at the same time

    • Measure the time it takes for the shorter wire to burn out completely

    • The remaining length of the longer wire will indicate the specific duration of time

  • Answered by AI
  • Q4. You have 3 ants located at the corners of a triangle. The challenge is to determine the movement pattern of the ants if they all start moving towards each other. What will be the outcome?

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPASapient Corporation interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, DBMS, OS, Aptitude, OOPSTime required to prepare for the interview - 4 monthsInterview preparation tips for other job seekers

Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.

Application resume tips for other job seekers

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Final outcome of the interviewSelected

Skills evaluated in this interview

I applied via Referral and was interviewed in Dec 2020. There were 5 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Selenium web driver, Testng, xpath, types of xpath, locators, agile model, select class, action class

Interview Preparation Tips

Interview preparation tips for other job seekers - Be technically prepared, give answer in concise and short manner.

Deloitte Digital Interview FAQs

How many rounds are there in Deloitte Digital Senior IOS Developer interview?
Deloitte Digital interview process usually has 3 rounds. The most common rounds in the Deloitte Digital interview process are Technical and HR.
What are the top questions asked in Deloitte Digital Senior IOS Developer interview?

Some of the top questions asked at the Deloitte Digital Senior IOS Developer interview -

  1. Sorting and searching algori...read more
  2. iOS SDK basic functional...read more
  3. Retrospective and Sc...read more

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Deloitte Digital Senior IOS Developer Interview Process

based on 1 interview

Interview experience

5
  
Excellent
View more

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