public void add(Person p)
{
Node wt = new Node(p);
Node nt = new Node(p);
Node current = wHead;
Node prev = null;
//weight sorting loop
while (current != null && current.person.Weight < p.Weight)
{
prev = current;
current = current.nextNode;
}
if (prev == null)
{
wt.nextNode = wHead;
wHead = wt;
}
else
{
wt.nextNode = current;
prev.nextNode = wt;
}
//name sorting loop
current = nHead;
prev = null;
while (current != null && String.Compare(current.person.Name, p.Name) < 0)
{
prev = current;
current = current.nextNode;
}
if (prev == null)
{
nt.nextNode = nHead;
nHead = nt;
}
else
{
nt.nextNode = current;
prev.nextNode = nt;
}
size++;
}
//deletes the first occurence of query in the sorted name list.
public void delete(String name)
{
if (nHead == null)
{
Console.WriteLine("List is empty");
return;
}
Node current = nHead;
Node prev = null;
while (current != null)
{
if (current.person.Name.Equals(name))
{
if (current == nHead)
nHead = nHead.nextNode;
else
prev.nextNode = current.nextNode;
return;
}
prev = current;
current = current.nextNode;
}
if(current == null)
Console.WriteLine(name + " cannot be found.");
}
public DLinkList()
{
wHead = null;
nHead = null;
size = 0;
}
//deletes the first occurence of the query in the sorted weight list.
public void delete(int weight)
{
if (wHead == null)
{
Console.WriteLine("List is empty");
return;
}
Node current = wHead;
Node prev = null;
while (current != null)
{
if (current.person.Weight == weight)
{
if (current == wHead)
wHead = wHead.nextNode;
else
prev.nextNode = current.nextNode;
return;
}
prev = current;
current = current.nextNode;
}
if (current == null)
Console.WriteLine(weight + " cannot be found.");
}
