There are N children standing in a line. Each child is assigned a rating value.Y……
There are N gas stations along a circular route, where the amount of gas at stat……
Clone an undirected graph. Each node in the graph contains alabeland a list of itsneighbor……
Given a string s, partition s such that every substring of the partition is……
Given a string s, partition s such that every substring of the partition is……
Given a 2D board containing'X'and'O', capture all regions surrounded by……
Given a binary tree containing digits from0-9only, each root-to-leaf path could represent ……
主要是完成String类的构造函数、拷贝构造函数、赋值构造函数和析构函数。这个类中包括了指针类成员变量m_data，当类中包括指针类成员变量时，一定要重载构造函数、赋值函数、析构函……
在面试笔试中经常碰到关于数据库操作的，一直是自己的弱项，这次专门学习下。1、为表添加主键alter table <tablename> add primar……
1、简单的查询select * from tablename;2、带条件查询select *form tablename where 3、避免重复查询select dis……
