Due to the epidemic this year, I have been at home in the first half of this year. In February, when I was worry-free, staying at home and not making trouble for the country, I found that my classmates had found an offer. My heart began to panic. I originally wanted to start the postgraduate entrance examination if I could return to school in March, but whoever thought of this holiday went until September. I also tried the postgraduate entrance examination at home, but I still couldn't bear the loneliness of studying alone and gave up. Embarked on the road to find a job.
In March, I started to vote for my resume. I found a few tweets on Niuke.com and voted for Byte, Tencent and Alibaba. (ps: I don't know who gave me the courage at that time). I thought it was impossible for my resume to be screened, but every resume I submitted received an interview notice. (Ps: Maybe it was an internship at that time)
Without exception, every time it ended in failure, at most it was supported by two sides in the byte, and my ability did not meet their company's standards. By July, I still didn't receive an offer from a company. I summarized the interviews during this period before the start of school. I felt that I was too lofty, always floating in the air, not standing underground, and the foundation was still not firmly established. At the end of July, I randomly found a 4k internship to make ends meet, and then calm down, learn the basics, and brush up on real questions from various big factories. There was also a project in the company that I was following to study and summarize. In October, a new round of delivery began.
Meituan, Zhihu, bilibili, Pinduoduo, Jingdong. After waiting for a long time, no one invited me to do a written test or an interview. At that time, I really thought that I couldn't catch the tail of autumn. I can only comfort myself and say: my ability is not enough, and come on, spring recruits must enter the big factory.
When I was about to give up, Meituan sent me an interview notice, which started my dream-like interview process. On Monday, two times on Thursday, and three times on Friday, I received the offer notice in the evening. It's really like a dream. Of course, I can clearly feel that after preparing for the interview for 3 months, I have become very confident compared to before. Before I interviewed a big company, the interviewer asked a question, even if I knew the answer, I had to be stunned. It takes 2-3 seconds to slow down. But now, not only can I answer all the interviewers’ questions calmly, but I can also derive my own understanding of the questions. Now I have got an offer from Meituan, and I'm very content with my academic background (see Niuke.com, even if many big guys get the offer, they will continue to interview other big companies). For me, if I want a better choice, what I should do now is to grasp the moment, make achievements, continuously improve the technology, and then take this as a step up the ladder.
Next, I will share the four-sided real questions of my Meituan for everyone to see. The previous few big companies will not share them. Anyway, I haven't survived two sides. I personally feel that the reference is not meaningful.
Meituan side:
Self-introduction The
interviewer is interested in my project and starts to ask questions from that project (so when you write your resume, you can do some guidance in the project so that the interviewer can ask the technical points you are good at).
1. How to mine information, why extract such information (project problem)
2. Deadlock conditions, how to destroy the deadlock?
3. Handwriting a deadlock situation?
4. What causes a slow network? How to solve each?
5. The process after entering the URL.
6. After entering the URL, the webpage keeps turning around, why? How to solve?
7. How to speed up the response? How to speed up the analysis?
8. Code question: a question similar to (123455) is changed to "twelve thousand four hundred and fifty-five"
9. Rhetorical question
Meituan two sides:
Self-introduction
1. Handler mechanism source code
2. Threadlocal principle
3. Android IPC
4. Android multi-threading implementation
5. Binder mechanism principle
6. What is object
- oriented 7. What is object -oriented better than process-oriented
8. Rhetorical question
Meituan three sides (HR side)
Self-introduction
1. Introduce the specific work in the internship, explain one of the technical concepts
2. What is the most regrettable thing during the undergraduate course
3. Views on the work location
4. Regarding the choice of the company, what to value, talk about the company culture , Tell me about your understanding.
5. Why didn’t you stay in the intern company
. 6. Have some competition winning experiences . Let me introduce the most influential competition experience. Is the competition a team, how many people, and what is the division of labor?
7. Rhetorical question
Learning experience
Interviews can really improve a lot of their knowledge. Big factories are really tolerant of graduates. They won’t hang you up because you have no project experience, they won’t hang you up because you don’t have an internship experience, or because You have no experience in the competition to kill you. ** None of these are okay. The interviewer will talk to you about the basics, such as computer networks, operating systems, and computer composition principles. You have to master it in depth so that the interview can be passed. **In one interview, the interviewer discussed the TCP connection with me. After the client and the server established a three-way handshake, the client suddenly disconnected from the Internet. Will the server know that the client is disconnected? Then the client network is restored, do we still need to establish a TCP three-way handshake? Will there be four waves at that time? At that time, I was a little confused by this question (this was a question asked by Byte 2 at the time, and I will try to find the answer to this question later, but the understanding is not very deep. Anyone who knows can explain it to me).
Dachang's investigation of the basic knowledge of computers is really in-depth. After thinking about it, I think it is true that the basics of computers are firmly grasped, and it is really fast to get in touch with new knowledge. Computer knowledge is updated very quickly and needs to be constantly updated. Learning. The foundation is really important.
So I passed the previous interviews with big factories, although I failed, but afterwards I made a lot of conclusions, and then formulated a clear study plan, which made me interview Meituan later, which seemed very easy. Next, I will share my study plan during the three-month study period and my notes with you. I hope you can have some inspiration and help (if you need a complete document, you can like it + any comments, and I will send a private message in the background!)
Study route (click on the picture to view the full picture)
study notes (due to space reasons, no screenshots will be shown)
Major module notes and actual interview questions 
Performance optimization data catalog
Performance optimization part analysis content 
2056 pages Dachang interview real questions analysis 2056 pages Dachang interview real questions analysis
Due to the length of the article, all the contents of the documents will not be shown in screenshots. Each document has more than 500 pages. The explanation of each module is very detailed. If you need a complete document, you can like + any comments, and then private messages in the background. I want it!
At last
It’s true that your academic qualifications are a “stepping stone”, but what kind of person you are after knocking on the door determines your height. For me, either lucky or hard work. I still have a long way to go on the career path of programmers. Knowing that the academic qualifications are not enough, I will use my hard work to make up. This is from 0 to 1. It’s a process, otherwise, even if you knock on that door one day, you will be turned away.
Finally, it ends with a sentence from James Gosling, the father of Java: "If one day he stops studying, then his career will begin to die." This is not a scary weird thing, I saw this sentence at first It has become my personal creed, and this sentence will always inspire me. I hope everyone can encourage!