Can you help me out with this question? I could not get the right algorithm

5. Complete the body of leafCount so it satisfies its contract. For fu Il credit, you must use recursion, and only one return statement ak * Reports the number of the childless node in the XMLTree t. *@param t the XMLTree * @return the number of childless nodes in the tree * @ensures leafcount= [count of childless nodes in in t] private static int leafCount (XMLTree t)