////   This file contains the C++ code from Program 8.16 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/pgm08_16.cpp//void ChainedScatterTable::Withdraw (Object& object){    if (count == 0)	throw domain_error ("scatter table is empty");    unsigned int i = H (object);    while (i != Entry::null && array [i].object != &object)	i = array [i].next;    if (i == Entry::null)	throw invalid_argument ("object not found");    for (;;)    {	unsigned int j;	for (j = array [i].next;	    j != Entry::null; j = array [j].next)	{	    unsigned int const h = H (*array [j].object);	    bool contained = false;	    for (unsigned int k = array [i].next;		k != array [j].next && !contained;		k = array [k].next)	    {		if (k == h)		    contained = true;	    }	    if (!contained)		break;	}	if (j == Entry::null)	    break;	array [i].object = array [j].object;	i = j;    }    array [i].object = 0;    array [i].next = Entry::null;    for (unsigned int j = (i + length - 1U) % length;	j != i; j = (j + length - 1U) % length)    {	if (array [j].next == i)	{	    array [j].next = Entry::null;	    break;	}    }    --count;}