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This is a fibonacci-heap priority-queue implementation. That means insert: O(1) decrease_priority: Amortized O(1) delete_min: Amortized O(log n) This project is different from K. Kodamas PQueue in that it allows a decrease key operation. That makes PriorityQueue usable for algorithms like dijkstras shortest path algorithm, while PQueue is more suitable for Heapsort and the like.

installgem install PriorityQueue
Authors

Brian Schroeder

1,021 total downloads 810 for this version
Versions
  1. 0.1.2 October 29, 2005
  2. 0.1.1 October 25, 2005
  3. 0.1.0 October 25, 2005