文章目录1. 题目2. 解题1. 题目
Given the root of an N-ary tree of unique values, and two nodes of the tree p and q.
You should move the subtree of the node p to become a direct child of node q. If p is already a direct child of q, don’t change anything. …
文章目录1. 题目2. 解题1. 题目
Table: Customers
------------------------
| Column Name | Type |
------------------------
| customer_id | int |
| name | varchar |
| country | varchar |
------------------------
customer_id is the p…
文章目录1. 题目2. 解题1. 题目
Table: Users
------------------------
| Column Name | Type |
------------------------
| user_id | int |
| name | varchar |
| mail | varchar |
------------------------user_id is the primary ke…