Suppose we want to add an extra operation, deunion, which undoes the last union operation that has
Question:
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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a When we perform a union we push onto a stack the ...View the full answer
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Related Book For
Data Structures and Algorithm Analysis in Java
ISBN: 978-0132576277
3rd edition
Authors: Mark A. Weiss
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