Interview guides / ios
Contains Duplicate: iOS Interview Question
Contains Duplicate interview question with a clear example answer for iOS engineers. Practice with AceMobileInterview.
This is a common iOS interview topic: Contains Duplicate.
Below is a concise answer you can adapt in a real interview, then go deeper in the full AceMobileInterview track.
1.Return true if any value appears at least twice in an array.
Set/Dictionary membership while iterating. O(n) time/space. Sorting is O(n log n) alternative without extra set.
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