Lead Ios Developer Interview Questions

Find the Longest Substring Without Repeating Characters Problem Statement: Given a string s, find the length of the longest substring without repeating characters. Input: A string s containing only ASCII characters (length between 0 and 10⁵). Output: An integer representing the length of the longest substring without repeating characters. Examples: Input: s = "abcabcbb" Output: 3 Explanation: The answer is "abc", with a length of 3. Input: s = "bbbbb" Output: 1 Explanation: The answer is "b", with a length of

General questions about previous work experiences.

How to avoid retain cycle when use a NSTimer, what's the relationship between timer and runloop.

Junior IOS Developer

Interviewed at Avinashi Systems

3.6★

Aug 9, 2016

1. What is view controller 2. What is navigation view controller 3. What is inheritance 4. difference between objective c and swift 5. what is thread 6. what is category 7. what is atomic and nonatomic 8. which are application state 9. what is difference between inactive state and background state Machine Test 1. Json parsing 2. Show data from json to table view 3. On cell's long press, cell data should be removed from table view 4. Insert data from json to sqlite database 5. On loading app or refresh, data should be came from sqlite database.

Middle IOS Developer

Interviewed at Gozem

4.4★

May 16, 2022

Mostly about the assignment I have done, explaining how I did it

Junior IOS Developer

Interviewed at Shaurya Technosoft

4.1★

Dec 13, 2022

App States, basics of swift etc

iOS Developer

Interviewed at Spaceti

4.8★

Jul 1, 2024

Tell us about your experience.

IOS Developer

Interviewed at SourceEdge

3.6★

May 16, 2016

how can you handle a team?

IOS Developer

Interviewed at Volga Infotech

4.3★

Dec 6, 2013

The questions were tough but if you have good preparation ,you could crack anything

iOS Developer

Interviewed at Multisys Technologies

3.3★

Oct 7, 2024

My full info before landing initial interview