public void replace(int p, String s) {
first();
p--;
for (int i = p; i >= 0; i--) {
down();
}
DLLNode temp = new DLLNode(s);
temp = cursor;
temp.data = s;
}
public EditableList() {
n = 0;
head = new DLLNode(null);
tail = new DLLNode(null);
cursor = new DLLNode(null);
head.next = tail;
head.prev = null;
tail.prev = head;
tail.next = null;
cursor = tail;
}
// add s after the cursor node
// point cursor to the new node
// (if cursor is off the end do nothing)
public void addAfter(String s) {
if (cursor == tail) { // do nothing!
} else {
DLLNode temp = new DLLNode(s);
temp.prev = cursor;
temp.next = cursor.next;
cursor.next.prev = temp;
cursor.next = temp;
cursor = temp;
n++;
}
}
// add s before the cursor and
// put the cursor on the new node
public void add(String s) {
if (cursor == head) {
System.out.println("hit the head");
} else {
DLLNode temp = new DLLNode(s);
temp.prev = cursor.prev;
temp.next = cursor;
cursor.prev.next = temp;
cursor.prev = temp;
cursor = temp;
n++;
}
}
