NodeAtBegin insertAtBegin(NodeAtBegin head, int data) {
NodeAtBegin newHead = new NodeAtBegin(1);
if (head == null) {
head = newHead;
return head;
}
newHead.next = head;
return newHead;
}
public static void main(String[] args) {
InsertAtBeginning begin = new InsertAtBeginning();
NodeAtBegin head = new NodeAtBegin(2);
NodeAtBegin headNext = new NodeAtBegin(3);
head.next = headNext;
NodeAtBegin result = begin.insertAtBegin(head, 1);
while (result != null) {
System.out.println(result.data);
result = result.next;
}
}
