摘要: 恢复内容开始 null 恢复内容结束 阅读全文
posted @ 2021-06-05 22:57 泊鸽 阅读(57) 评论(0) 推荐(0)
摘要: 就是BFS,同时把每层的值作为列表保存 # Definition for a binary tree node. # class TreeNode: # def __init__(self, val=0, left=None, right=None): # self.val = val # self 阅读全文
posted @ 2021-06-05 21:22 泊鸽 阅读(57) 评论(0) 推荐(0)