通过继承(inheritance)，联系在一起的类构成一种层次关系 基类(base class)：定义共同拥有的成员 派生类(derived class)：定义特有的成员 虚函数(virtual function)：基类希望派生类各自定义

14.9 重载类型转换运算符类型转换运算符是特殊的成员函数，它负责将一个类类型的值转换成其他类型一般形式为：operator type() const; 定义一个比较简单的类，令其表示0到255之间的一个整数class SmallInt &

14.8 函数调用运算符 函数调用运算符必须是成员函数 struct absInt { int operator()(int val) const { return val < 0 ? -

72. Edit DistanceLeetCode-72 Given two strings word1 and word2, return the minimum number of operations required to conv

11. Container With Most WaterYou are given an integer array height of length n. There are n vertical lines drawn such th

LeetCode 115. Distinct SubsequencesLeetCode-115 Given two strings s and t, return the number of distinct subsequences of

LeetCode 53. Maximum SubarrayLeetCode-53 Given an integer array nums, find the contiguous subarray (containing at least

LeetCode 718. Maximum Length of Repeated SubarrayLeetCode-718 Given two integer arrays nums1 and nums2, return the maxim

LeetCode 300. Longest Increasing SubsequenceLeetCode-300 Given an integer array nums, return the length of the longest s

操作系统基础什么是操作系统 介于硬件资源和应用程序之间的一个系统软件 操作系统的功能 操作系统位于硬件资源之上，管理硬件资源；应用程序之下，为应用程序提供服务，同时管理应用程序 1、资源分配，资源回收计算机重要的硬件资源无非就是CPU、

LeetCode 455. Assign CookiesLeetCode-455 Assume you are an awesome parent and want to give your children some cookies. B

LeetCode 498. Diagonal TraverseLeetCode-498 Given an m x n matrix mat, return an array of all the elements of the array