Zoom 杭州C++客户端二面面经
面试官是技术总监，我想自我介绍一下都不让我介绍了，说我看简历就行。
问了一些项目问题还有职业规划的问题，问项目的技术点，回答的很差，不知道该说什么。
职业规划我说想看见更丰富的世界，不想一个职业干到底。
全程尬聊，之后他说做道题，写一个多叉树，支持添加节点、查询节点、删除、析构。
14:33写到14:52，差不多还写出来了。
#include <iostream>
#include <queue>
#include <vector>
using namespace std;
int cnt = 0;
struct Node
{
int name; //编号
int val; //
Node* child{};
Node* right{};
Node(){}
Node(int _name, int _val):name(_name),val(_val){}
};
Node* root;
void addBro(Node* fa, int val)
{
if(fa->child)
{
Node* ch = fa->child;
while(ch->right) ch = ch->right;
ch->child = new Node(++cnt, val);
}
else
{
fa->child = new Node(++cnt, val);
}
}
void add(int father_name, int val)
{
Node* now = root;
queue<Node*> Q;
Q.push(now);
bool flag = false;
while(!Q.empty())
{
now = Q.front();
Q.pop();
if(now->name == father_name)
{
addBro(now,val);
flag = true;
break;
}
if(now->right) Q.push(now->right);
if(now->child) Q.push(now->child);
}
if(!flag) {
cout << "Not exist this father"<<endl;
}
}
int query(int name){
Node* now = root;
queue<Node*> Q;
Q.push(now);
bool flag = false;
int ans;
while(!Q.empty())
{
now = Q.front();
Q.pop();
if(now->name == name)
{
ans = now->val;
flag = true;
break;
}
if(now->right) Q.push(now->right);
if(now->child) Q.push(now->child);
}
if(!flag) {
cout << "Not exist this father"<<endl;
return -1;
}
else {
return ans;
}
}
void depth_del(Node* to_del)
{
Node* now = to_del;
queue<Node*> Q; // queue
vector<Node*> vec;
Q.push(now->child);
while(!Q.empty())
{
now = Q.front();
Q.pop();
vec.push_back(now);
if(now->right) Q.push(now->right);
if(now->child) Q.push(now->child);
}
for(int i = 0;i<vec.size();i++){
delete vec[i];
}
return;
}
Node* del(int name)
{
Node* now = root;
queue<Node*> Q;
Q.push(now);
bool flag = false;
Node* ptr;
while(!Q.empty())
{
now = Q.front();
Q.pop();
if(now->name == name)
{
ptr = now;
flag = true;
break;
}
if(now->right) Q.push(now->right);
if(now->child) Q.push(now->child);
}
if(!flag) {
cout << "Not exist this father"<<endl;
return nullptr;
}
else {
return ptr;
}
}
int main(){
} 然后给面试官仔细讲了两遍如何用队列遍历一棵树，已经递归的方式和非递归方式实现树的优缺点。 刚打开牛客准备写面经，就接到hr面的电话，面试刚结束13分钟。。。
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