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Communications of the ACM

Communications of the ACM

Right brother trees

Insertion and deletion algorithms are provided for the class of right (or one-sided) brother trees which have O (log n) performance. The importance of these results stems from the close relationship of right brother trees to one-sided height-balanced trees which have an insertion algorithm operating in O (log2 n). Further, although both insertion and deletion can be carried out in O (log n) time for right brother trees, it appears that the insertion algorithm is inherently much more difficult than the deletion algorithm—the reverse of what one usually obtains.

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