?? pgm11_11.cpp
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//// This file contains the C++ code from Program 11.11 of// "Data Structures and Algorithms// with Object-Oriented Design Patterns in C++"// by Bruno R. Preiss.//// Copyright (c) 1998 by Bruno R. Preiss, P.Eng. All rights reserved.//// http://www.pads.uwaterloo.ca/Bruno.Preiss/books/opus4/programs/pgm11_11.cpp//Object& LeftistHeap::DequeueMin (){ if (IsEmpty ()) throw domain_error ("priority queue is empty"); Object& result = *key; LeftistHeap& oldLeft = Left (); LeftistHeap& oldRight = Right (); key = 0; left = 0; right = 0; SwapContents (oldLeft); delete &oldLeft; Merge (oldRight); delete &oldRight; return result;}
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