class Solution {public: vector<int>w; int ans=-1,b; int calc(){ int res=1,s=0; for(int i=0;i<w.size();i++){ s=(s+w[i])%...

给定一组非负整数 nums，重新排列每个数的顺序（每个数不可拆分）使之组成一个最大的整数。

给你一个整数 n ，请你判断 n 是否为 丑数 。如果是，返回 true ；否则，返回 false 。

select id,month,salary+ifnull(l1,0)+ifnull(l2,0) salary from (select *,lag(salary,1) over(partition by id order by month ) l1, lag(salary,2) over(p...

delete from person where id not in( select id from( select min(id) id from person group by email)t )

select w1.id from weather w1 join weather w2 on datediff(w1.recorddate,w2.recorddate)=1 and w1.temperature>w2.temperature

select request_at "Day",round(avg(`status`!="completed"),2) "Cancellation Rate" from trips t join users u1 on u1.users_id=t.client_id a...

select d.name "Department",e.name "Employee",Salary from Employee e join Department d on e.Departmentid=d.id where (select count(distinct(e1.sa...

# Write your MySQL query statement belowselect Name Customers from Customers where Id not in(select c.Id from Customers c,Orders o where c.Id = o.Cu...

# Write your MySQL query statement belowselect Email from Person group by Email having count(Email)>1