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Assignment 3 Solution

You are on your honour to present your own work and acknowledge your sources.

 

1.   [6 marks: Splay Trees] One feature of splaying versus the simple move to root heuristic is that in performing a splay operation (i.e. performing the appropriate splay operations to move a node to the root), no node has its depth increased by more than 2. Prove this.

 

2.   [6 marks: splay trees versus static optimal] Give an example of an arbitrarily long sequence of search requests for n key values such that the cost in a splay tree is “much” (i.e. more than a constant factor) less than that of the static optimal. Give both costs.

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