Counting all the nodes in a Linked List

Question

I\'m trying to write a simple method to count all the nodes in the linked list. I know there are 7 items in the linked list, but it is returning just 6 of them.

Her

Answer 1

public int count() {
    int count = 0;
    for (ListNode n = head; n != null; n = n.next) {
        count++;
    }
    return count;
}