TubeMogul Interview Question: The most difficult question, ... | Glassdoor

Interview Question

Senior PHP Developer Interview Emeryville, CA

The most difficult question, only because I couldn't answer

  the question due to my failure to review this topic, was, "List and describe three object oriented design patterns."

Interview Answer

1 Answer


I described the Factory design pattern, but couldn't list two others. When the Developer asked me to describe a Singleton, I told him that I forgotten what it was. Shame on me, because I had a feeling that this was going to be asked. I spent too much time reviewing Big-O and Algorithms.

Interview Candidate on May 7, 2014

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