Create Binary Tree as shown
Node * root = newNode ( 10 ) ; root -> left = newNode ( 2 ) ; root -> right = newNode ( 5 ) ; root -> right -> left = newNode ( 18 ) ; root -> right -> right = newNode ( 12 ) ; root -> right -> left -> left = newNode ( 2 ) ; root -> right -> left -> right = newNode ( 3 ) ; root -> right -> right -> left = newNode ( 3 ) ; root -> right -> right -> right = newNode ( 14 ) ; root -> right -> right -> right -> left = newNode ( 7 ) ;