Calculate occurrences of specified word in a large text file

Posted by Tony on Stack Overflow See other posts from Stack Overflow or by Tony
Published on 2010-04-20T03:04:38Z Indexed on 2010/04/20 3:13 UTC
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This is an interview question, and should concern about efficiency. How to calculate occurrences of specified word in a large text file? I can only think of indexOf() method in most programming languages, but I don't think that the correct answer.

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