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[LeetCode] 1029. Two City Scheduling 两个城市调度
A company is planning to interview people. Given the array where ,?the cost of flying the person to city is , and the cost of flying the person to cit ...
分类:其他好文   时间:2021-02-17 14:20:21    阅读次数:0
LeetCode - Merge Intervals
Given an array of intervals where intervals[i] = [starti, endi], merge all overlapping intervals, and return an array of the non-overlapping intervals ...
分类:其他好文   时间:2021-02-16 12:04:54    阅读次数:0
1002 A+B for Polynomials (25 分)
This time, you are supposed to find $A+B$ where $A$ and $B$ are two polynomials. Input Specification: Each input file contains one test case. Each cas ...
分类:其他好文   时间:2021-02-10 13:03:20    阅读次数:0
Python 使用
查看python安装位置 C:\Users\密码123456>where python C:\Program Files\python\python.exe C:\Users\密码123456\AppData\Local\Microsoft\WindowsApps\python.exe 查看已安装的 ...
分类:编程语言   时间:2021-02-10 13:02:28    阅读次数:0
重要的sql语句
1:oracle 分页 select * from (select t.*, rownum rn from (select * from menu order by id desc) t where rownum < 10) where rn >=5 2: mysql 分页 select * fro ...
分类:数据库   时间:2021-02-09 12:24:17    阅读次数:0
LeetCode - Minimum Remove to Make Valid Parentheses
Given a string s of '(' , ')' and lowercase English characters. Your task is to remove the minimum number of parentheses ( '(' or ')', in any position ...
分类:其他好文   时间:2021-02-09 12:12:28    阅读次数:0
Mybatis 动态 sql
元素 元素 作用 备注 if 判断语句 单条件分支判断 choose、when、otherwise 相当于 java 的 case when 多条件分支判断 Trim、where、set 辅助元素 用于处理 sql 拼装问题 foreach 循环语句 在 in 语句等列举条件常用,常用于实现批量操作 ...
分类:数据库   时间:2021-02-08 12:13:21    阅读次数:0
Matrix Chain Multiplication UVA - 442
Suppose you have to evaluate an expression like ABCDE where A,B,C,D and E are matrices. Since matrix multiplication is associative, the order in which ...
分类:其他好文   时间:2021-02-08 11:54:10    阅读次数:0
Leetcode - Gas Station
There are n gas stations along a circular route, where the amount of gas at the ith station is gas[i]. You have a car with an unlimited gas tank and i ...
分类:其他好文   时间:2021-02-08 11:44:08    阅读次数:0
List类型中找不到Where方法
因为是Asp.net初学者,照搬网上的例子用到程序中,但是人家的代码中List类型用到了Where方法,为什么我的List的类型中就找不到Where方法呢? 问了万能的度娘,终于找到答案. 原来, 还需要引用Linq命名空间才行. 添加 using System.Linq; 这时,在List类型的变 ...
分类:其他好文   时间:2021-02-06 12:18:13    阅读次数:0
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