public T getData(int index) {
LLNode<T> node = head;
if (index < 0) return null;
for (int i = 0; i < index; i++) {
node = node.getPointer();
}
return node.getData();
}
public String toString() {
String line = "";
LLNode<T> current = head;
while (current != null) {
line += current.getData().toString() + ",";
current = current.getPointer();
}
return line;
}