Suppose we want to add an extra operation, deunion, which undoes the last union operation that has

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Suppose we want to add an extra operation, deunion, which undoes the last union operation that has not been already undone.

a. Show that if we do union-by-height and finds without path compression, then deunion is easy and a sequence of M union, find, and deunion operations takes O(MlogN) time.

b. Why does path compression make deunion hard?

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Data Structures and Algorithm Analysis in Java

ISBN: 978-0132576277

3rd edition

Authors: Mark A. Weiss

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Question Posted: Mar 06, 2018 10:06 AM

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Suppose we want to add an extra operation, deunion, which undoes the last union operation that has

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a When we perform a union we push onto a stack the ...View the full answer

Data Structures and Algorithm Analysis in Java

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