After 2 years of outsourcing, I finally landed! Record my ByteDance 3 rounds of interviews, hope to help you!

After nearly two months of fierce fighting , Today, I finally received bytes offer 了 , For the first time, I posted a post to share my experience .

It is recommended that students go to the internal delivery first , At the beginning, I didn't notice this and the whole process was very slow ,4 The final result of the resume delivered at the end of the month is only now . But thanks for the byte hh.

There is a record before the title , Now sort it out and send it out .

1 Noodles (1 Hour or so )

• Self introduction.
• Asked about the project
• linux The first thing to start 3 What are the processes
• Linux What is a file descriptor
• liunx What happens when you add a piece of data to a file
• Hashmap How to achieve , How to expand
• Thread safe Hashmap What are they?
• volatile The role of
• GC What are the algorithms
• How to communicate between processes
• Which communication methods should fall into the kernel state
• redis in list What is the underlying data structure of
• redis How to recover data
• Https Request process for , The more detailed, the better
• Http2.0 What are the characteristics of
• know Http3.0 Do you
• Four waves time_wait The role of state
• Dictate how to find massive data before 100 Large number , There are unlimited memory and limited memory , Which sort algorithm is the fastest
• Algorithm problem ： Give an integer array , Find out the length of the longest peak , Such as [2, 1, 3, 7, 6, 4, 5], The longest is [1, 3, 7, 6, 4], So back 5.
• In the end, there was no rhetorical question, and he directly said not to leave and wait for the second interviewer .

2 Noodles Basically, it's all about the database

• Algorithm problem ： Find the square root of an integer , Retain 3 Decimal place
• SQL topic ： Design a subway table structure Questioning ： Judge whether two subway stations are on the same subway line
• The underlying implementation of database index Questioning ： Why? B+ Trees are better than red and black trees
• SQL What should I do if I check slowly
• How to make the database deadlock
• What are the cases when the index is not used
• Dictate how to find the data that appears the most times in a large amount of data , There are unlimited memory and limited memory .
• Is there anything you want to ask the interviewer

3 All the problems are algorithmic

• Opening greetings
• 3 Algorithm questions ：
• Merge two ordered arrays
• Serpentine output binary tree
• find n The th of the total number of permutations m Number
• Just talk about the project
• Rhetorical questions

4 Noodles team leader Noodles

• Self introduction.
• Talking about projects
• How can a large file be opened quickly
• Find the target number that appears first in the sort array
• Design questions ： The realization of car lottery
• ask ( He expressed his strong desire to join byte and his background and determination to work stably , Also put leader Amused hh)
• There are still some other problems I can't remember clearly , The answer is not ideal .

Subtotal

Normal should be 3 Round interview , however HR Said that there was a job change in the middle , So I added a round . The overall feeling of the interview was very good , Are smiling interview , Don't ask a certain knowledge point very deeply , Positive affirmation will also be given to the questions answered correctly . There are handwritten algorithm problems in each round, so it is very important to brush them , For example, all three sides are testing algorithm problems , Finally, when asked where the interviewer needs to improve, the interviewer also said , Other aspects are not so demanding for fresh students . But I still have pressure , So a little nervous . today 1 month 26 Send an e-mail to ask HR Acknowledge and receive offer, It's a good result . Finally, I hope all of you can find your favorite job !

At the request of the readers, I have prepared some Java Structure interview learning materials , The technical content includes ：Spring,Dubbo,MyBatis, RPC, Source code analysis , High concurrency 、 High performance 、 Distributed , performance optimization , Microservices Advanced architecture development and so on .

Here are some screenshots , Free download method is attached at the end of the article .

Chapter one ： The basic chapter

Second articles ：JVM piece

Third articles ： Multithreading & Concurrent articles

Fourth articles ：Spring piece

Chapter five ：MyBatis piece

Chapter 6 ：Spring Boot piece

Chapter 7 ：MySQL piece

Chapter eight ：Redis piece

Chapter 9 ：Spring Cloud piece

Chapter 10 ：Nginx piece

Chapter 11 ：MQ piece

Chapter 12 ： Data structure and algorithm

Chapter 13 ：Linux piece

Chapter 14 ： Resume

Last

The whole document has nearly 200 page , In order not to affect everyone's reading experience, only part of the content is displayed , Hope to help you review before the interview and find a good job , It also saves time for people to search information on the Internet to learn ！

Click on the business card below if you need , Scan the code for free .