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Authors:
Michael T. Goodrich, Roberto Tamassia, Michael H. Goldwasser
Chapter:
Priority Queues
Exercise:
Exercises
Question:33 | ISBN:9781118771334 | Edition: 6

Question

We can represent a path from the root to a given node of a binary tree by means of a binary string, where 0 means “go to the left child” and 1 means “go to the right child.” For example, the path from the root to the node storing (8,W) in the heap of Figure 9.12a is represented by “101.” Design an O(logn)-time algorithm for finding the last node of a complete binary tree with n nodes, based on the above representation. Show how this algorithm can be used in the implementation of a complete binary tree by means of a linked structure that does not keep an explicit
reference to the last node instance.

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