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    <p><a href="http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-046j-introduction-to-algorithms-sma-5503-fall-2005/" rel="nofollow noreferrer">This</a> book (and <a href="http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-046j-introduction-to-algorithms-sma-5503-fall-2005/video-lectures/" rel="nofollow noreferrer">supporting video lectures</a>) provide some great explanation of algorithms and data structures. There are some lectures about hash functions (<a href="http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-046j-introduction-to-algorithms-sma-5503-fall-2005/video-lectures/embed07/" rel="nofollow noreferrer">1</a>, <a href="http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-046j-introduction-to-algorithms-sma-5503-fall-2005/video-lectures/embed08/" rel="nofollow noreferrer">2</a>). I'd recommend that.</p> <p><a href="http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-046j-introduction-to-algorithms-sma-5503-fall-2005/chp_6046textcove.jpg" rel="nofollow noreferrer">Cormen http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-046j-introduction-to-algorithms-sma-5503-fall-2005/chp_6046textcove.jpg</a></p> <p><s>Also, just FYI, <code>hashCode()</code>, called on an instance of <code>Object</code> class returns an address of this particular instance in memory.</s> Not really true, as pointed by <a href="https://stackoverflow.com/users/276101/polygenelubricants">polygenelubricants</a> in comments.</p>
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    1. POWhat is a hash function in java?
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    1. COFYI, your FYI is a half-truth. From http://java.sun.com/javase/6/docs/api/java/lang/Object.html#hashCode%28%29 - "`converting` the internal address of the object into an integer/this implementation technique is `not required`"
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    2. COI'm intrigued. Could you please be more specific? :)
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    3. COBut isn't this a recommendation for classes, that override this method? Instead I'm talking about instances of the `Object` class itself.
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