4 / \ 3 5 / \ / \ 10 2 3 1
Node * root = newNode ( 4 ) ; root -> left = newNode ( 3 ) ; root -> right = newNode ( 5 ) ; root -> right -> left = newNode ( 3 ) ; root -> right -> right = newNode ( 1 ) ; root -> left -> left = newNode ( 10 ) ; root -> left -> right = newNode ( 2 ) ; printNodes ( root ) ; }