Junior intern, ByteDance, after sharing, has been offered

Third year students of the national science and Technology University , No internship, no project experience, average score

one side 3.9：40min

HashMap and ConcurrentHashMap The difference between

vector,list

C++ polymorphic , Virtual function mechanism

Process of communication

Process thread differences

TCP Three handshakes, four wave details

Algorithm problem ： The longest non repeating string （HashTable,O(N)）

The interviewer is very good , Some missing knowledge points will be pointed out and explained to you , Also very patient .

Two sides 3.15：1h

Java polymorphic （ Look at the program and say the result , More complicated , I also examined override and overwrite）

Binary search tree

B Trees b+ Trees

Red black tree delete algorithm

Using mutex lock to realize read-write lock , Writer first

Algorithm problem ： Yes 100 A square , Each one has poisonous mushrooms and physical mushrooms , Poisonous mushroom reduces physical strength, mushroom increases physical strength , Current physical strength is the longest distance you can jump , Ask if you can jump to the farthest space , If possible , Fall in the first place 100 The maximum remaining strength on the grid

The two-sided interviewer is very serious , Answering questions doesn't confirm or negate you , After listening to your answer, you will go straight to the next knowledge point , The rhythm is very tight . I thought it was cold after noodles , Ten minutes later hr Call three sides , And the three interviewers said that the previous two interviews were highly appraised . So don't lose heart when you meet a serious interviewer , It's good to answer with a normal heart

On three sides 3.17： 1h

Service method call

RPC/Netty

serialize / Deserialization

10 Looking for a hundred million Top10000, We need to think about fragmentation , If you use minimal heap, you need to consider efficient merging

Consider printers with waiting time and priority , Design data structure to make printing task efficient

Twenty four

At the beginning of the third interview, the interviewer asked when and where he wanted to practice , Guess it might be leader Direct interview （ Finally, I happened to go to the city where the interviewer was ）, People are very kind , But the questions are not the basic questions I have prepared , When I met, I was still a little helpless .

3.27 received offer La ！ After waiting for nearly two weeks, I finally got what I wanted offer ha-ha ！

In fact, preparing for the interview with byte skipping still needs to focus on the preparation of the basic part （ data structure 、 Algorithm 、 operating system 、 computer network ）, In addition, the requirements for algorithm problems are very high , If you can directly give the optimal time and space complexity solution of the problem when you see the problem , The interviewer will think highly of you .

If you have a solid foundation of knowledge , Take a look at the interview experience on the Internet , Find out what you don't know , Leak filling .

I also wish you all can get your favorite offer！

Chatter

First of all, congratulations to the readers , Let aobing go , I'm sure, but , Many of these things have not been prepared , I said before that school recruitment is more difficult than social recruitment , It really doesn't frame you , So kids , I really need to prepare well .

Tell me something about me recently , I've been busy recently , The output frequency of the article is not as high as before , And I've been staying up late recently. It seems that I've lost my hair , I still control staying up late .

Finally, I'd like to ask for your opinion , I don't know what to write , I'm writing about a distributed lock , Send it out next week , I don't know anything else , You leave a message to see what you want to see , When I saw what I was interested in, I wrote .

I'll stop recording interview videos after the Spring Festival , Still want to do some technology , Or make a living ？

What do you like to watch .

Chatter

in addition , Ao Bing organized his interview articles into an e-book , common 1630 page ！ Directory as follows

Now it's free , In my official account. Three Prince Ao Bing reply 【888】 Can get .

I'm aobing , A programmer who lives on the Internet .

The more you know , The more you don't know , personnel Their 【 Three even 】 It's the biggest driving force of C-C's creation , See you next time ！

notes ： If there are any mistakes and suggestions in this blog , Welcome to leave a message ！

---

Articles are constantly updated , You can search by wechat 「 Three Prince Ao Bing 」 First time reading , reply 【 Information 】 I have the interview materials and resume template for the first-line large-scale factory , this paper GitHubhttps://github.com/JavaFamily Included , A complete interview site for a large factory , welcome Star.

)