Driver code
public static void main ( String args [ ] ) { BinaryTree tree = new BinaryTree ( ) ; tree . root = new Node ( 6 ) ; tree . root . right = new Node ( 9 ) ; tree . root . right . left = new Node ( 7 ) ; tree . root . right . right = new Node ( 10 ) ; tree . root . right . right . right = new Node ( 11 ) ; System . out . println ( tree . longestConsecutive ( tree . root ) ) ; } }