感悟：一个小时，15个选择题，3个填空题，2道编程，还好编程题不难，就是写下伪代码，不然就裂开了。
选择题：C/C++基本知识点吧，然后还有一些数据结构和算法知识。。。。有些考点都忘记了，列下来吧
enum{ ND, IS = 7, GREATER }; cout<<ND<<GREATER<<endl; 0,8：默认是0，然后赋值了的话就依次增加
虚函数：父类指针指向子类对象，调用父类方法时，该父类方法就定义成虚函数
填空题：
1.list和vector和deque优缺点，使用环境
list链表：非连续内存，适合插入删除，不适合随机访问
vector动态数组：连续内存，适合随机访问，不适合插入删除，对存储数量没有要求
deque双向队列：连续内存，适合首部的插入删除
（写了下大致的区别，不过也差不多了，链表就是适合插入删除，不适合随机访问，数组反之）
2.空指针和野指针还有什么巴拉巴拉。。。。
空指针void * :可以指向任意对象，定义时声明
野指针:delete或者free内存后没删除指针的值（就好比你亲戚搬家了，但你还保留原来地址的纸片）
3.拷贝构造函数
Class a = Class b的时候，就需要拷贝构造函数，将一一赋值
编程题：
1.一一个数，保证其二进制01010101这样10101001就是1,和0连续：不断/2 % 2判断就好了。
2.LIS：
2种解法：一种暴力O(n)，就是二重循环判断
2.二分法查找，但是不能保证1111这样答案是4（因为我是用lower_bound做的）
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