Interview guides / ios

Valid Parentheses: iOS Interview Question

Valid Parentheses interview question with a clear example answer for iOS engineers. Practice with AceMobileInterview.

This is a common iOS interview topic: Valid Parentheses.

Below is a concise answer you can adapt in a real interview, then go deeper in the full AceMobileInterview track.

1. 1.Check if a string of brackets is valid using a stack in Swift.

   Push opening brackets; on closing, pop and match. O(n) time/space. Cover empty string and odd lengths.