RetailMeNot Interview Question: given an array of strings, return the first one which appears only once in the array | Glassdoor

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RetailMeNot interview question

Intern Interview

given an array of strings, return the first one which appears only once in the array

Interview Answers

Anonymous

4 Dec 2014

use a hashset

Anonymous

22 Jan 2015

if it's php array_search(1, array_count_values($values));

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