p_aux_heap.h
资源名称:leda.tar.gz [点击查看]
上传用户:gzelex
上传日期:2007-01-07
资源大小:707k
文件大小:2k
源码类别:
数值算法/人工智能
开发平台:
MultiPlatform
- /*******************************************************************************
- +
- + LEDA-R 3.2.3
- +
- + p_aux_heap.h
- +
- + Copyright (c) 1995 by Max-Planck-Institut fuer Informatik
- + Im Stadtwald, 66123 Saarbruecken, Germany
- + All rights reserved.
- +
- *******************************************************************************/
- #ifndef LEDA_PAIRING_AUX_HEAP_H
- #define LEDA_PAIRING_AUX_HEAP_H
- #include <LEDA/impl/p_heap.h>
- // by Markus Neukirch
- //
- // Implementation following John T. Stasko and Jeffrey Scott Vitter
- // ( Communications of the ACM March 1987 Volume 30 Number 3 S. 234-240 )
- class p_aux_heap:public p_heap
- {
- ph_item* head,*minptr;
- int item_count;
- virtual int cmp(GenPtr, GenPtr) const {return 0; }
- virtual void print_key(GenPtr) const {}
- virtual void print_inf(GenPtr) const {}
- virtual void clear_key(GenPtr&) const {}
- virtual void clear_inf(GenPtr&) const {}
- virtual void copy_key(GenPtr&) const {}
- virtual void copy_inf(GenPtr&) const {}
- virtual int int_type() const { return 0; }
- void do_copy(ph_item*,ph_item*,bool);
- ph_item* twopass(ph_item*);
- ph_item* multipass(ph_item*);
- public:
- p_aux_heap();
- p_aux_heap(int) { error_handler(1,"no p_heap(int) constructor");}
- p_aux_heap(int,int) { error_handler(1,"no p_heap(int,int) constructor");}
- p_aux_heap(const p_aux_heap& init); // construct
- p_aux_heap& operator=(const p_aux_heap&);
- ~p_aux_heap() {clear();}
- ph_item* insert(GenPtr,GenPtr);
- void decrease_key(ph_item*,GenPtr);
- ph_item* find_min() const
- {return minptr;}
- void delete_min_multipass(); // auxiliary version
- void delete_min_twopass(); // auxiliary version
- GenPtr key(ph_item* x) const {return x->key;}
- GenPtr inf(ph_item* x) const {return x->inf;}
- void change_inf(ph_item* x,GenPtr inf)
- {clear_inf(x->inf);copy_inf(inf);x->inf=inf;}
- void del_item(ph_item* x)
- {decrease_key(x,minptr->key);delete_min_twopass();}
- void clear()
- {p_heap::clear();item_count=0;}
- int size() const { return item_count;}
- int empty() const {return item_count;}
- };
- #endif