原题链接在这里:https://leetcode.com/problems/flip-game/description/ 题目: You are playing the following Flip Game with your friend: Given a string that contains only these two characters: and -, you and your friend take turns to flip…
需要使用:分区函数用法(partition by 字段) select *,row_number() over(partition by item order by date ) as index from tab 分区索引 ------------------------------------------- SQL Server select * from (select * , row_number() over(partition by id …