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Ios Developer Engineer Interview Questions
7,850 ios developer engineer interview questions shared by candidates
Here’s a ninja (i.e. supposedly not a heavy) question: Given an array of numbers, reset the array to put all the non-zero numbers in front of all the zeros in the array, then return the count of non-zero numbers. e.g., for an input array of [3,0,2,0,0,1,0,4], you’ll end up with a return value of 4 and an array of [3,2,1,4,0,0,0,0] I do not remember if they asked me to do this in-line and/or return the adjusted array as well.
This is a question from my first interview (back in 2015), and I have a feeling it's still used: A telephone keypad has letters associated with each number (e.g. 2 = abc, 3 = def). Given a passphrase of "fb1" (e.g. one that you might use to log into a bank account), come up with an algorithm that would assemble an array that contains all the different possible letter combinations that, when typed into a telephone dial pad, would be equivalent to the original passphrase. That is, "fb1" equals "321" numerically; matching equivalent combinations include: "da1", "db1", "dc1", "ea1", "eb1", "ec1", "fa1" and "fc1".
General iOS Questions.
Given two binary numbers in string format, get the sum of them.
Asked about Swift and what type of app that I had built to understand more about the different technologies I used to build it.
Design twitter Design Server driven system
1. First missing positive integer in an unordered array 2. Observer implementation
Why do you want to work for SwapCard?
Implement the m file @protocol Stack <NSObject> @property (nonatomic, readonly) NSInteger count; - (void)pushObject:(nonnull id)object; - (nullable id)popObject; @end
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