It is reported that Bytedance will continue to recruit on a large scale, and the demand for school recruitment will exceed 12,000 this year. On Boss, the number of jobs that BYTE is currently hiring has exceeded 10,000.
And almost every three to five, you can see the byte skipping of certain executives. Tencent's "first line" broke out not long ago. Among the five executives who left Baidu last year, two have officially joined Bytedance. In addition, in this upsurge of autumn recruits, Byte has definitely earned enough attention.
Today I will briefly talk about it from two aspects, I hope it can help everyone
- Interview skills
- algorithm
But in the past interviews, not many people can answer this question systematically. Most people have such problems:
The five most common reasons why programmers fail interviews
In order to find a high-paying job, it is the most basic to learn solid basic knowledge and professional skills, but it is impossible to express what you have learned during the interview. It is like cooking dumplings in a teapot and cannot be poured out. , The chance of being accepted will be greatly reduced. How can we successfully interview for a job? The following is a summary of the reasons for the failure of the interview, as long as you avoid entering such misunderstandings during the interview.
One reason why Java programmers failed interviews: too little said
Programmers’ poor speech is a common problem in the IT industry. All their language expressions are replaced with codes. Usually, they can only hear the keyboard sound in the office. There is almost no language communication. It may be professional reasons. Programmers The expressive ability is extremely poor. The most obvious performance in the interview is in the non-technical aspects, such as self-introduction, project introduction, etc., everything that has nothing to do with hands-on coding can not come. Even the introduction of the project process and the sections that you are responsible for are all stumbling. In this way, The interviewer will feel that you have no passion for the job, and the whole interview process is a bit awkward, and the impression is average, or even poor, so it is difficult to succeed.
Reason two for the failure of the Java programmer interview: talk too much
In addition to the dense type (exaggerated type) of this part; more pass away are those who are eager to explain themselves; some programmers are eager to prove when they are asked a question (especially if they don’t understand the question) For yourself, use more words to cover up your shortcomings, but you have to pay attention to that, normally the interviewer’s skills are better than yours, or if you can ask this question, you must have a good understanding of this technical point, and the more you say Then the more shortcomings are exposed, it is necessary to master the heat when explaining, I don’t know if you can get to this point;
The third reason for the failure of Java programmer interview: the basic knowledge is not firmly grasped
Many times, companies, especially large companies, do not have particularly high requirements for resumes. It does not necessarily have to be how gorgeous a resume is to be matched. In many cases, super first-line Internet companies value the mastery of basic knowledge. The foundation is also the most important thing. Many programmers fall into this when interviewing Internet companies.
Four reasons why Java programmers failed to interview: failed to answer the interviewer’s difficult questions
The interviewer may give some urgent questions during the interview and ask you to give solutions. Of course, when faced with this kind of emergency, you will generally be nervous and it is inevitable that your brain will short-circuit, but a mature professional will give a complete solution. Thinking, this situation is understandable after all. The most fearful thing is that I can neither type out simple codes nor have any ideas to solve problems, let alone give solutions. Once this happens, the interviewer can only say embarrassed to you.
Five reasons why Java programmers failed interviews: improper words and deeds
Many well-known companies, especially those with obvious labels in their corporate culture, will pay great attention to the performance of this area. Not to mention such a big one, but from a small point of view, even an ordinary person, we ourselves, will like to be polite and civilized. Appropriate people also hope that there will be one more colleague like this, and the cooperation is smooth and full of tacit understanding. The editor recommends that during the interview, you must pay attention to proper clothing, not shaking your legs, be modest and cautious, and not quarrel with the interviewer.
Today we will address the above pain points to solve the problem of bad words
Java Core Essentials
The interviewer usually has a comprehensive understanding of the interviewer's knowledge structure in just two hours. If the interviewer is procrastinated and cannot directly address the essence of the question when answering the question, it will be difficult to fully express himself and ultimately affect the interview result. In response to this situation, this book does not procrastinate when explaining the knowledge points, and strives to be concise. It introduces in detail the core knowledge points that Java programmers are often asked in interviews. After being familiar with it, the interviewer can show one percent of the interview. Bai Er's strength;
Read suggestions
The catalog of this book is meticulous, and readers are advised to use the catalog as a reference to review the past and learn the new after reading the book, so as to achieve the purpose of understanding. It is recommended that readers spend 3 weeks to read carefully and understand the knowledge points, codes and architecture diagrams in the book in detail; spend another two days to review, recall the knowledge points against the catalog, and check the missing parts in time; before the interview Spend 3 hours to review to fully grasp the knowledge points of this book. In this way, readers can have a fuller understanding of the breadth and depth of each knowledge point in the book, and will be confident in the interview.
There are 9 chapters in this book, and the contents of each chapter are as follows:
Due to space reasons, it is not possible to show all of them. Friends who need this Java core narration can like this article + after following [click me to receive](https://jq.qq.com/?_wv=1027&k=Q1QKI70j You can get the full PDF version for free;
Chapter 1:
Explain the principles of JVM, involving JVM operating mechanism, JVM memory model, common garbage collection algorithms and JVM class loading mechanism.
chapter 2:
Explain the basics of Java, involving collections, exception classification and handling, reflection, annotations, internal classes, generics, and serialization.
Chapter 3:
Explain the knowledge of concurrent programming in Java, involving the working principles and applications of Java multithreading, the working principles and applications of Java thread pools, as well as locking and process scheduling algorithms.
Chapter 4:
Explain the knowledge of data structure, involving stacks, queues, linked lists, hash tables, binary trees, red-black trees, graphs and bitmaps.
Chapter 5:
Explain the common algorithms in Java, involving binary search, bubble sort, insertion sort, quick sort, hill sort, merge sort, bucket sort, radix sort and other algorithms.
Chapter 6:
Explain the principles of network and load balancing, involving TCP/IP, HTTP, common load balancing algorithms, and LVS principles.
Chapter 7:
Explain the principles of databases and distributed transactions, involving database storage engines, database concurrent operations and locks, and database distributed transactions.
Chapter 8:
Explain the principle and application of distributed caching, involving the introduction of distributed caching, the principle and application of Ehcache, the principle and application of Redis, and the core issues of distributed cache design.
Chapter 9:
Explain design patterns, involving 23 common classic design patterns.
Friends who need the above Java core narration can like it and follow [click me to receive](https://jq.qq.com/?_wv=1027&k=Q1QKI70j to get the full PDF version for free;
algorithm
Wake up, don’t scan "Sword Finger Offer" again. If Leetcode writes one or two hundred common questions, you dare to go to an interview with a big factory. I thought it was 5 years ago. I only tested you for quick sorting, merging, etc. There have been too many programmers in the past few years, and you are stuck in various ways. I used to boil frogs in warm water before, and I was taught various ways to behave after going out for an interview! For example, in the previous interview with an AI unicorn, the first two sides were almost all algorithmic questions, and you didn't ask much else. If you don't prepare, you will almost 100% hang up.
From my previous interview experience, the difficulty of algorithmic interviews has increased significantly in recent years. Not only large factories, but even many small and medium-sized factories directly leetcode the original question. If you are lucky, I will ask you an easy one. If you are not lucky, you may even start directly from medium/hard. The interview style of big companies is more and more in line with North American companies.
Array, string, linked list, stack, queue, hash table, binary tree, heap, recursion, deep search and wide search, dynamic programming basic questions, it is best to do a few common questions for each type to practice hand feel. Prevent you from looking dumbfounded when asking you, and can't hold a few lines of code for half an hour, wasting a valuable interview opportunity. Personally, I don't really like to do questions. There are too many fun things, but there is no way. The situation is like this. The competition is getting more and more fierce. If you don't have a good company project background, then do the questions. (Unless the school, educational background, project experience, open source project, company background, etc. have good advantages)
So the algorithm is also the top priority when entering the byte, it is recommended to read two algorithm books
The first book: "Code Interview Guide for Programmers: The Optimal Solution of Algorithms and Data Structure Problems for Famous IT Companies"
There are many good algorithm books, but the algorithm books explained in Java language seem to be the only one that is relatively good;
(This algorithm book of Zuo Shen only needs to like it and follow [click me to receive] (https://jq.qq.com/?_wv=1027&k=Q1QKI70j to get the PDF version for free)
This is a programmer interview book! The book summarizes the optimal solutions of various questions in the code interview of IT famous companies, and provides related code implementations. Aiming at the current pain point of the lack of authoritative questions in programmer interviews, this book selects nearly 200 classic code interview questions that have actually appeared to help programmers prepare for the interview without fail. After "brushing" the book, you are the "king of inscription"! The eol book organizes the content in the way of question + answer, and puts the questions of similar interview question types or similar solutions together as much as possible. Readers can easily see the connection between the interview question solutions when studying this book, so that knowledge learning is avoided fragmentization. The book divides all interview questions from difficult to easy into four grades of "general, school, officer, and scholar", so that readers can choose "brush" questions in a targeted manner. All the interview questions included in this book give the best explanation and code implementation, and provide some running time comparisons between common and optimal solutions, so that readers can truly feel the charm of optimal solutions! The topics in the eol book are comprehensive and classic. More importantly, the book contains a large number of exclusive topics and optimal solution analysis, which are derived from the author's in-depth thinking of "deadly smashing myself" for many years. Eol coders , are you ready to stand out and become famous in the interview of famous IT companies? This book is the "great weapon" you should have. Of course, for programmers who need to improve their ability in algorithms and data structures, the value of this book is also obvious.
The second book: "The Fun of Algorithms"
After reading this book, I resonated with Wang Yi’s thoughts. Look at the picture below; (like it and follow [click on me to receive](https://jq.qq.com/?_wv= 1027&k=Q1QKI70j can be packaged and obtained)
Starting from a series of interesting life examples, this book comprehensively introduces the basic methods of constructing algorithms and their extensive applications, vividly showing the interest and practicality of the algorithms. The book is divided into two parts. The first part introduces the concept of algorithms, commonly used algorithm structures and implementation methods, and the second part introduces the applications of algorithms in various fields, such as physical experiments, computer graphics, digital audio processing, etc. Among them, there are not only various well-known algorithms, such as neural networks, genetic algorithms, discrete Fourier transform algorithms and various interpolation algorithms, but also humble sorting and probability calculation algorithms. The explanation is simple and easy to understand without losing depth and rigor, which is of great inspiration to programmers. All the examples in the book are closely related to life, vividly showing the essence of the algorithm to solve the problem, let you fall in love with the algorithm, and enjoy it.
Write at the end
All companies like comprehensive talents. Only after expanding their technical scope can they form their own structural thinking, and their own path will become wider and wider;
There is a sentence that I think is right: since I have chosen the profession of programmers, we must do a good job in earning enough wages for ordinary workers at the age of 50 at the age of 30;
see you