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I need a suitable data structure!

 
Simon Halliday
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I have to produce a JAVA top trumps game and need a data structure in which to store 'card' objects. It needs to be expandable (ruling out a conventional array) and I need to be able to shuffle the cards (ruling out a linked list). I have heard of a mythical array type that can be expanded and has a '.shuffle' method but can't find anything on it in my textbooks. If anyone can suggest a structure and give me a quick run-down on the syntax associated with it (or tell me where to look to find out about it) I would most grateful.
 
David Harkness
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You'll have to travel to far off lands and battle dragons to find it, but java.util.ArrayList is the magic you seek. Some have even read in ancient mystic scrolls of an incantation to shuffle any List.
 
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