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    "https://leetcode.com/problems/leaf-similar-trees\n",
    "\n",
    "\n",
    "Runtime: 36 ms, faster than 36.33% of Python3 online submissions for Leaf-Similar Trees.\n",
    "Memory Usage: 14.1 MB, less than 90.11% of Python3 online submissions for Leaf-Similar Trees.\n",
    "\n",
    "\n",
    "```python\n",
    "class Solution:\n",
    "    def leafSimilar(self, root1: TreeNode, root2: TreeNode) -> bool:\n",
    "        #7:14\n",
    "        self.l1 = []\n",
    "        self.l2 = []\n",
    "        self.travel1(root1)\n",
    "        self.travel2(root2)\n",
    "        if self.l1 == self.l2:\n",
    "            return True\n",
    "        else:\n",
    "            return False\n",
    "        #7:18\n",
    "        \n",
    "    def travel1(self, node):\n",
    "        if node is None:\n",
    "            return\n",
    "        self.travel1(node.left)\n",
    "        #print(node.val, end=\" \")\n",
    "        if (node.left == None and node.right==None):\n",
    "            self.l1.append(node.val)\n",
    "        self.travel1(node.right) \n",
    "        \n",
    "    def travel2(self, node):\n",
    "        if node is None:\n",
    "            return\n",
    "        self.travel2(node.left)\n",
    "        #print(node.val, end=\" \")\n",
    "        if (node.left == None and node.right==None):\n",
    "            self.l2.append(node.val)\n",
    "        self.travel2(node.right) \n",
    "```"
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