public HeadNode(char val)
{
this.value = val;
this.Head = null;
this.Tail = null;
this.dnode = null;
}
public HeadNode ForwardGo(char val)
{
HeadNode h = Header;
while (h.storeValue != val)
{
h = h.storeNxt;
}
return(h);
}
public void ReversePrint()
{
HeadNode printNode = Pointer;
while (printNode != null)
{
Console.WriteLine(printNode.storeValue);
printNode = printNode.storePrv;
}
}
public HeadNode ReverseGo(char val)
{
HeadNode curr = Pointer;
while (curr.storeValue != val && curr.storePrv != null)
{
Console.WriteLine(curr.storeValue);
curr = curr.storePrv;
}
return(curr);
}
public bool IsAvailableIndex(char Value)
{
HeadNode xway = Header;
// Node yway = Header.storeDnode;
while (xway != null && Value != xway.storeValue)
{
xway = xway.storeNxt;
}
return(xway != null);
}
public void CreateXLinkedList()
{
for (int k = 65; k <= 91; k++)
{
char val = (char)k;
HeadNode n = new HeadNode(val);
if (Header == null)
{
Header = n;
Pointer = n;
dnode = null;
}
else
{
Pointer.storeNxt = n;
n.storePrv = Pointer;
Pointer = Pointer.storeNxt;
}
}
}
public bool IsEmailAlreadyExists(string email)
{
HeadNode printNode = Header;
DataNode dn;
while (printNode != null)
{
dn = printNode.storeDnode;
while (dn != null)
{
if (dn.storeEmail == email)
{
return(true);
}
dn = dn.storeNext;
}
printNode = printNode.storeNxt;
}
return(false);
}
public DataNode[] GetAllContacts()
{
DataNode[] d = new DataNode[10];
int i = 0;
HeadNode printNode = Header;
DataNode dn;
while (printNode != null)
{
dn = printNode.storeDnode;
while (dn != null)
{
d[i] = dn;
i++;
dn = dn.storeNext;
}
printNode = printNode.storeNxt;
}
return(d);
}
public void SaveAllContacts()
{
DataNode[] d = new DataNode[10];
int i = 0;
HeadNode printNode = Header;
DataNode dn;
while (printNode != null)
{
dn = printNode.storeDnode;
while (dn != null)
{
d[i] = dn;
i++;
dn = dn.storeNext;
}
char a = printNode.storeValue;
printNode = printNode.storeNxt;
SaveToFile(a, d);
}
}
public void Print()
{
char[] a = new char[26];
string[] b = new string[100];
for (HeadNode printNode = Header; printNode != null; printNode = printNode.storeNxt)
{
Console.WriteLine("HeadNode Value :" + printNode.storeValue);
// Console.WriteLine("Contacts Found: " + printNode.GetSize);
for (DataNode dn = printNode.storeDnode; dn != null; dn = dn.storeNext)
{
Console.WriteLine("First Name: " + dn.storeFname);
Console.WriteLine("Last Name:" + dn.storeLname);
Console.WriteLine("Full Name : " + dn.storeFname + " " + dn.storeLname);
Console.WriteLine("Num : " + dn.storeCnum);
Console.WriteLine("Email: " + dn.storeEmail);
Console.WriteLine("Address: " + dn.storeAddress);
}
}
}
public DataNode[] SearchContact(string Name)
{
Name = Name.ToUpper();
DataNode[] d = new DataNode[10];
int i = 0;
HeadNode printNode = Header;
DataNode dn;
while (printNode != null)
{
dn = printNode.storeDnode;
while (dn != null)
{
if (dn.storeFname == Name || dn.storeLname == Name || dn.storeFname + " " + dn.storeLname == Name)
{
d[i] = dn;
i++;
}
dn = dn.storeNext;
}
printNode = printNode.storeNxt;
}
return(d);
}
public MainClass()
{
Header = null;
Pointer = null;
dnode = null;
}
