Abstract

The existence of purely top-down updating algorithms for balanced search trees is of importance when maintaining such trees in a concurrent environment, where purely top-down means a single sweep from the root to frontier along a search path. We present algorithms for internal- and external-search trees in the general framework of stratified trees. This enables us to demonstrate that many classes of balanced search trees have such updating schemes, although, for example, weight-balanced trees do not fit into this framework.

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