Nevermind, I found the answer. It looks like a self-balancing binary search tree. http://en.wikipedia.org/wiki/Self-balancing_binary_search_tree http://en.wiki

Nevermind, I found the answer. It looks like a self-balancing binary search tree. http://en.wikipedia.org/wiki/Self-balancing_binary_search_tree http://en.wikipedia.org/wiki/Self-balancing_binary_search_tr...