/*   Author:  Jianfei Zhu              Concordia University   Date:    Sep. 26, 2003Copyright (c) 2003, Concordia University, Montreal, CanadaAll rights reserved.Redistribution and use in source and binary forms, with or withoutmodification, are permitted provided that the following conditions are met:   - Redistributions of source code must retain the above copyright notice,       this list of conditions and the following disclaimer.   - Redistributions in binary form must reproduce the above copyright       notice, this list of conditions and the following disclaimer in the       documentation and/or other materials provided with the distribution.   - Neither the name of Concordia University nor the names of its       contributors may be used to endorse or promote products derived from       this software without specific prior written permission.THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THEIMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSEARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BELIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, ORCONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OFSUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESSINTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER INCONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OFTHE POSSIBILITY OF SUCH DAMAGE.*/#ifndef _FP_NODE_CLASS#define _FP_NODE_CLASS//class FP_tree;class FI_tree;class MFI_tree;class CFI_tree;class FPnode{public:	int itemname;public://	FPnode(FPnode* par, int itemname, int count);//	~Fnode();};class Fnode : public FPnode{public:	Fnode* par;	Fnode* leftchild;	Fnode* rightsibling;	Fnode* next;	int count;public:	Fnode(Fnode* par, int itemname, int count);	~Fnode();	void init(Fnode*, int, int);    Fnode* append(FI_tree*, Fnode*, int, int);};   class Mnode : public FPnode{public:	Mnode* par;	Mnode* leftchild;	Mnode* rightsibling;	Mnode* next;	int level;      //level in MFI-treepublic:	~Mnode();		void init(Mnode*, int, int);	Mnode* append(MFI_tree*, Mnode*, int, int);};class Cnode : public FPnode{public:	Cnode* par;	Cnode* leftchild;	Cnode* rightsibling;	Cnode* next;	int level;      //level in MFI-tree	int count;public:	~Cnode();	void init(Cnode*, int, int, int);	Cnode* append(CFI_tree*, Cnode*, int, int, int);};#endif