摘要: class Solution: def sumOfLeftLeaves(self, root: TreeNode) -> int: if not root: return 0 if root and root.left and not root.left.left and not root.left 阅读全文
posted @ 2019-11-20 15:46 欣姐姐 阅读(93) 评论(0) 推荐(0) 编辑