The website I Write Like will analyze your prose and tell you if it resembles H. P. Lovecraft, Vladimir Nabokov, Dan Brown, or one of the other forty famous writers in its database. Margaret Atwood gave it a try and found she didn't write like herself; rather, the database pegged her as Stephen King. We can only imagine Nabokov's incredulity at being told by a computer that someone else writes like him, or worse, that he wrote like anyone else (especially Stephen King).
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No need to worry. I pasted in a few paragraphs of Lolita and received the following:
I write like
Vladimir Nabokov
Jim Twiggs