摘要: 1 # 定义节点 2 class TreeNode: 3 def __init__(self, x): 4 self.val = x 5 self.left = None 6 self.right = None 7 8 # 前序遍历(递归) 9 def preorder_rec(root): 10 阅读全文
posted @ 2021-01-13 18:40 karry2karry 阅读(454) 评论(0) 推荐(0)