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Unique Binary Search Tree Representations and Equality-Testing of Sets and Sequences.

机译:独特的二进制搜索树表示和集合和序列的等式测试。

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摘要

Given an ordered universe U, we study the problem of representing each subset of U by a unique binary search tree so that dictionary operations can be performed efficiently. We exhibit representations that permit the execution of dictionary operations in optimal time when the dictionary is sufficiently sparse or sufficiently dense. We apply unique representations to obtain efficient data structures for maintaining a collection of sets/sequences under queries that test the equality of a pair of objects. In the process, we devise an interesting method for maintaining a dynamic, sparse array. (kr)

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