/**
* Insert a node at the end of the list containing the specified data Increment the size of the
* list each time
*
* @param data The data value of the new node
*/
public void InsertNode(int data) {
ListNode node = new LinkedList.ListNode(data);
if (first == null) {
first = node;
first.next = last;
first.previous = header;
} else if (last == null) {
last = node;
last.previous = first;
first.next = last;
} else last.next = node;
node.previous = last;
last = node;
matrixSize = matrixSize + 1;
}
/** Sets all of the values of the list to null -- clearing the list */
public void clearList() {
ListNode currentNode = first;
ListNode nextNode = null;
first = null;
header = null;
while (currentNode != null) {
nextNode = currentNode.next;
currentNode.next = currentNode.previous = null;
currentNode = nextNode;
}
}