public static void main(String args[]){
        LinkList ll = new LinkList();
        Node head = null;
        head = ll.addNode(10, head);
        head = ll.addNode(12, head);
        head = ll.addNode(15, head);
        head = ll.addNode(25, head);
        head = ll.addNode(30, head);
        head = ll.addNode(36, head);
        head = ll.addNode(40, head);
        head = ll.addNode(45, head);
        
        LinkListToCompleteBinaryTree llct = new LinkListToCompleteBinaryTree();
        llct.convert(head);
        llct.inorder(head);
    }
http://www.geeksforgeeks.org/given-linked-list-representation-of-complete-tree-convert-it-to-linked-representation/
Test cases
Zero, One or more nodes in link list
src/com/interview/linklist/LinkListToCompleteBinaryTree.java