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Describe and analyze an algorithm to determine the number of shortest paths from a source vertex...

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Programming

Describe and analyze an algorithm to determine the number ofshortest paths from a source vertex s to a target vertex t in anarbitrary directed graph G with weighted edges. You may assume thatall edge weights are positive and that all necessary arithmeticoperations can be performed in O(1) time.

[Hint: Compute shortest path distances from s to every othervertex. Throw away all edges that cannot be part of a shortest pathfrom s to another vertex. What’s left?]

Write a pseudo code algorithm for the situation described above.:)

Answer & Explanation Solved by verified expert
3.7 Ratings (324 Votes)
algorithm dassignn INF ds 0 set q qinsert0 s while qempty int v qbeginsecond qeraseqbegin    See Answer
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