Ha, there was a CS major explaining this to someone in the library this afternoon. I didnt join in because I dont know much about programming, but IIRC, she said just what you did--you cant really delete them, you have to make a new array minus the element you wish to delete, or, if you can, just set the element equal to null.
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"Good people do not need laws to tell them to act responsibly, while bad people will find a way around the laws."
--Plato
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