def binaryTreePathsRecu(self, node, path, result):
        if node is None:
            return

        if node.left is node.right is None:
            ans = ""
            for n in path:
                ans += str(n.val) + "->"
            result.append(ans % str(node.val))

        if node.left:
            path.append(node)
            self.binaryTreePathsRecu(node.left, path, result)
            path.pop()

        if node.right:
            path.append(node)
            self.binaryTreePathsRecu(node.right, path, result)
            path.pop()
dataset/ETHPy150Open kamyu104/LeetCode/Python/binary-tree-paths.py/Solution.binaryTreePathsRecu/operator `+` -> `%`