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hat are also ancestors of v and w. Computing the LCA is useful in multiple

hat are also ancestors of v and w. Computing the LCA is useful in multiple

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Given a DAG and two vertices v and w, find the lowest common
ancestor (LCA) of v and w. The LCA of v and w is an ancestor of v and w that has no
descendants that are also ancestors of v and w. Computing the LCA is useful in multiple
inheritance in programming languages, analysis of genealogical data (find degree of
inbreeding in a pedigree graph), and other applications. Hint : Define the height of a
vertex v in a DAG to be the length of the longest path from a root to v. Among vertices
that are ancestors of both v and w, the one with the greatest height is an LCA of v and w.

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