This problem asks you to write a function that takes in an array of integers and returns true if any element appears more than once in the array. Otherwise, the function should return false.
This is a great solution! The candidate has used a hash set to keep track of unique elements in the array as they iterate through it. This is an efficient way to solve the problem with a time complexity of O(n).
Evaluated at: 2022-11-27 16:15:28