摘要：
Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum. F 阅读全文
摘要：
Given two binary trees, write a function to check if they are equal or not.Two binary trees are considered equal if they are structurally identical an... 阅读全文
摘要：
一、动态内存与智能指针 1、new：在动态内存中为对象分配空间并返回一个指向该对象的指针；delete：接受一个动态对象的指针，销毁该对象，并释放与之关联的内存 2、两种指针：shared_ptr和unique_ptr；还有一个weak_ptr；都定义在memory中 二、shared_ptr类：智... 阅读全文