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Authors:
Michael T. Goodrich, Roberto Tamassia, Michael H. Goldwasser
Chapter:
Graph Algorithms
Exercise:
Exercises
Question:62 | ISBN:9781118771334 | Edition: 6

Question

Our implementation of shortestPathLengths in Code Fragment 14.13 relies on use of “infinity” as a numeric value, to represent the distance bound for vertices that are not (yet) known to be reachable from the source. Reimplement that method without such a sentinel, so that vertices, other than the source, are not added to the priority queue until it is evident that they are reachable.

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