Hashmaps vs storing data in the tree

Fragment of a discussion from User talk:AW/kD-Tree
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O, looks like i misunderstand you. Do you mean why HashMap is faster than TreeMap? I'm not sure but i think, that hash map has efficiency O(1) but tree map O(log N) because tree map are sorted and based on red-black tree. I do not describe how they works because my english skill...

Jdev‎19:39, 25 July 2012
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