list.cpp

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// List.cpp : implementation file
//

#include "stdafx.h"
#include "AI.h"
#include "List.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// List
List::~List()
{
	Node *next;
	while(first){
		next=first->next;
		delete first;
		first=next;
	}
}


BEGIN_MESSAGE_MAP(List, CWnd)
	//{{AFX_MSG_MAP(List)
		// NOTE - the ClassWizard will add and remove mapping macros here.
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()


/////////////////////////////////////////////////////////////////////////////
// List message handlers
int List::Length() const
{
	Node *current=first;
	int len=0;
	while(current){
		len++;
		current=current->next;
	}
	return len;
}

int List::Locate(const CString& x) const
{
	Node *current=first;
	int index=1;
	while(current && current->data!=x){
		current=current->next;
		index++;
	}
	if(current) return index;
	return 0;
}


void List::Insert(const CString& x)
{
	Node *y=new Node;
	y->data=x;
	if(!Empty()){
		y->next=first;
		first=y;
	}
	else
		first=y;
}