The peak recruitment season known as "Golden September and Silver October" is about to start, and the peak period of job hunting is coming. This year, the employment situation is grim. The "Gold, Three, Silver and Four" are jokingly called "Bronze, Three, Iron and Four". , I hope to help everyone.
1. Resume preparation
A resume needs to be prepared before an interview in every industry. A suitable resume will give the interview a good start.
The resume must be in line with your own situation and filled out truthfully. In addition to routine basic information, education information, and work experience, programmers also need to fill in mastered skills and work items .
Skills are short for proficiency, adding a few basic programming languages can give you extra points.
Projects must be filled in truthfully. Not many projects are completed by one person alone, but you can write as much as you have done. If you are assisting other colleagues or participating in planning, specific production modules, etc., you must fill in truthfully. Don't exaggerate your work experience in order to package yourself. Experienced HR can basically see whether the resume is true, so it is recommended to fill it out truthfully.
2. Know the company in advance
There are two ways to understand the purpose of the company in advance. On the one hand, it is to see if the overall situation of the company is what you want to go to, the company benefits, system, technical direction, etc. to see if you are suitable for this company. On the other hand, you need to know in advance A good company will leave a better impression on HR during the interview process, and let HR feel that you did not come for the interview blindly, and have a certain degree of recognition for the company. If you want to understand the company, it is not difficult for old programmers. They all have a certain understanding of various companies in an industry, or other colleagues, classmates, and peers who are in the company can more easily understand the specific situation of the company. If you are a novice programmer, the most effective way is to find out about your seniors or sisters or go online to learn about the situation.
3. Basic knowledge reserve
After the programmer interview, there must be a technical written test or interview. At this stage, basic knowledge must be prepared. If it is a computer interview, it is okay. If it is a written interview, it is basically based on basic knowledge. Check some basic interview questions on websites such as Employment and Likou to see how well you have mastered basic knowledge, etc.
4. Project organization
Each program must have its own project works. During the interview stage, organize your own works, and those that can be displayed directly can be displayed with a USB flash drive or a mobile phone. If you are a novice programmer, you can do whatever you have done during the learning phase or imitate any project you have copied. Novice programmers focus on demonstrating the technical field and technical mastery, while experienced programmers focus on demonstrating their own technical characteristics and technical direction. Finally, if your time is not very tight and you want to improve quickly, the most important thing is not to be afraid of hardship, that is really good, many people improve very quickly, you need to be not afraid of hardship!
5. Basic preparation
Preparation for regular interview questions: self-introduction, hobbies, why you left the previous company, technical requirements, welfare requirements, etc. Programmer interviews will also be encountered, and these suggestions should also be properly prepared. Clothes and etiquette preparations: Clothes do not need to wear formal clothes. Generally, Internet companies have less clothing requirements, but they should not be too casual, simple and clean.
Talk about metaphysics: Faith is very important
Although GPT4.0 is now available, I believe that even if artificial intelligence subverts most industries, it cannot replace the metaphysics of life. Just like today's young people like to knock on electronic wooden fish and accumulate cyber merit, not because they are superstitious, but because they have an idea: good things will always happen if there is enough merit.
In fact, this sense of belief is equally important in the workplace: do you believe in what the company you are interviewing for is doing, do you agree with it from the bottom of your heart? If you don't agree, there is a high probability that this job will not be done soon.
Even if you say something against your will during the interview and it is not exposed, your own energy will be gradually consumed by the job and you will not get any positive feedback. Do you want to believe that you have the ability and hope to find a job that you are satisfied with? The so-called " Law of Attraction " is actually a deep sense of belief, which transforms what you want into the state you already have in thought. What you believe in attracts into your life.
Interview question sharing
In order to help friends change jobs for interviews, get promoted and raise salaries, career difficulties, and improve their skills, this article has compiled a set of "Summary of Android Intermediate and Advanced Interview Questions" for you. At present, I have received feedback from seven or eight netizens, saying that the interview asked a lot of knowledge points.
Due to the limited space of the article, the complete interview questions and answer analysis cannot be displayed. Friends who need complete interview questions and answer analysis can scan the QR code below to get it for free! ! !
"Summary of Android Intermediate and Advanced Interview Questions" catalog
Java aspect
Java basics
- Difference between abstract class and interface?
- Talk about final, static, synchronized respectively
- Please briefly describe String, StringBuffer and
- What are the differences and usage scenarios between "equals" and "==" and "hashCode"?
- What is the difference between deep copy and shallow copy in Java?
- Talk about the difference between Error and Exception?
- What is the reflection mechanism? What are the application scenarios of the reflection mechanism?
- Talk about how to rewrite the equals () method? Why rewrite hashCode()?
- Talk about your understanding of type erasure in Java generics, and talk about its limitations?
-Why is String designed to be immutable? - Tell me about your understanding of Java annotations?
java collection
- Talk about the difference between List, Set, and Map?
- Talk about the difference between ArrayList and LinkedList?
- Please tell me the difference between HashMap and HashTable
- Talk about the expansion mechanism of ArrayList?
- How does HashMap work?
- Please briefly describe the working principle and usage of LinkedHashMap?
- Talk about the understanding of ConcurrentHashMap?
Java multithreading
- What are the ways to use multithreading in Java?
- Talk about several states of the thread?
- How to achieve synchronization in multithreading?
- Talk about thread deadlock, how to effectively avoid thread deadlock?
- Talk about the reason for thread blocking?
- Please talk about the difference between run() and start() in Thread?
- The difference between synchronized and volatile keywords?
- How to ensure thread safety?
- Talk about the usage and principle of ThreadLocal?
- What is the difference between notify and notifyAll in java thread?
- What is a thread pool? How to create a thread pool?
- Talk about several common locks in java threads?
- Talk about the difference between thread sleep() and wait()?
Java virtual machine
- Talk about the JAVA garbage collection mechanism?
- Answer what are strong, soft, weak, phantom references and the difference between them?
- Briefly describe the loading mechanism and loading process of classes in the JVM?
- The principles and differences of JVM, Dalvik, and ART?
- Please talk about Java's memory recovery mechanism?
- What are JMMs? What problems does it have? How to solve it?
Android side
four major components
- What are the common communication methods between Activity and Fragment?
- Application scenarios of LaunchMode?
- How much do you know about Context?
- What is IntentFilter? What are the usage scenarios?
- Talk about the difference between startService and bindService, life cycle and usage scenarios?
- How does Service keep alive?
- Briefly introduce how ContentProvider realizes data sharing?
- Talk about the life cycle of Activity when switching between horizontal and vertical screens?
- Is there a limit to the size of data transmitted by Intent? How to solve?
Android asynchronous task and message mechanism
- What are the usage scenarios and usage of HandlerThread?
- What are the application scenarios and usage posture of IntentService?
- Advantages and disadvantages of AsyncTask?
- Talk about your understanding of Activity.runOnUiThread?
- Can the child thread update the UI? Why?
- Talk about the Handler mechanism and principle?
- Why does creating a Handler in a child thread throw an exception?
- There is a Loop infinite loop in the Handler, why the main thread is not blocked, what is the principle?
data structure
- What is bubble sort? How to optimize?
- Please implement a simple singly linked list in Java?
- How to reverse a singly linked list?
- Talk about your understanding of time complexity and space complexity?
- Talk about how to judge a linked list into a ring?
- What is a red-black tree? Why use a red-black tree?
- What is quick sort? How to optimize?
- Talk about circular queues?
- How to judge the intersection of single linked list
Android Framework
Binder
- What are the advantages of Binder
- How does Binder make a copy
- Do you understand the memory mapping principle of MMAP?
- How does the Binder mechanism work across processes
- Talk about the communication mechanism of the four major components
- Why Intent cannot pass large data
Handler
- What is HandlerThread? Why does it exist?
- Briefly describe the overall principle of the Handler mechanism?
- Where does Looper exist? How can you guarantee that the thread is unique?
- How to understand the role of ThreadLocal?
- The similarities and differences between the main thread Main Looper and the general Looper?
- How does Handler or Looper switch threads?
- Why doesn't the infinite loop of Looper's loop() get stuck?
- How can Looper's waiting be accurately woken up?
- How to get Message? Why is it designed this way?
AMS
- What is ActivityManagerService? When was it initialized? what's the effect?
- What is ActivityThread? What is ApplicationThread? The difference between them
- What is Instrumentation? What is the relationship with ActivityThread?
- How is the communication between ActivityManagerService and zygote process realized.
- ActivityRecord、TaskRecord、ActivityStack，Activi
- ActivityManager、ActivityManagerService、Activit
- Simplified version of AMS implemented by handwriting
Algorithms
- How to use binary search algorithm
- How to effectively solve the problem of contact with water
- Binary Search Efficiently Determines Subsequences
- How to remove duplicate elements of sorted array
- How to find the longest palindrome substring
- How to perform modular exponentiation efficiently
- How to use greedy thinking wide area to play jumping game
- How to efficiently judge palindrome linked list
- How to randomly extract elements in an infinite sequence
- How to determine the legality of brackets
- How to find missing and duplicate elements
- Please talk about the principle of HashMap and SparseArrary, the advantages of SparseArrary compared to HashMap, how does ConcurrentHashMap achieve thread safety?
- Please talk about the principle of HashMap, the access process, why red-black tree is used, the comparison between red-black tree and complete binary tree, HashTab, concurrentHashMap, what is in the concurrent package?
- Please talk about the underlying principle of hashmap put(). When a conflict occurs, how to add it (traverse along the linked list, and compare the key values one by one to see if they are consistent. If they are consistent, overwrite and replace them. After the inconsistent traversal, insert the position)?
Kotlin aspect
- Please briefly describe what is Kotlin? What are its characteristics?
- How many common ways to implement singletons in Kotlin?
- In Kotlin, what is an inline function? what's the effect?
- Please talk about Coroutines in Kotlin, how is it different from threads? What are the advantages?
- Talk about the similarities and differences between Any in Kotlin and Object in Java?
- Are there implicit conversions for data types in Kotlin? Why?
- What are the ways of collection traversal in Kotlin
- What is the principle of Kotlin's built-in standard function let?
- What is the principle of the run high-order function of the Kotlin language?
audio and video
- How to optimize live streaming in seconds?
- What are the methods of digital image filtering?
- What are the features that can be extracted from an image?
- FFMPEG: How to synthesize video from pictures
- What are the common audio and video formats?
- Please describe the basic stream structure of MPEG video?
- Tell me about the data structure of ffffmpeg?
- How to reduce latency? How to ensure fluency? How to solve Caton? Solve network jitter?
- What are the soft solution and hard solution usually mentioned?
Flutter aspect
- Features of the Dart language?
- How does Dart multitask in parallel?
- Is dart pass by value or by reference?
- What are the features of Flutter?
- The relationship between Widget and element and RenderObject?
- What are the conditions for using mixins?
- Stream two subscription models?
- The core concepts of Widget, State, and Context in Flutter? What problem is it to solve?
- Talk about the differences and principles of Hot Reload, Hot Restart, and hot update
- How does Flutter communicate with Android iOS?
- Tell me what is state management and why is it needed?
at last
There are no difficult jobs, only brave workers! Even if the opponents encountered in job hunting are always "not three and four", and the HRs encountered are always "pushing three obstacles and four obstacles", the job hunting season is by no means just passive waiting. As long as you can get to the interview stage, you will be on the table successfully, you will get the opportunity to fight big with a small one, and you will earn a million dollars a year. If you fail, you will have nothing to lose. Let's continue. Now that you have entered the poker table and got an interview opportunity, you must use the best equipment and the most effective skills to improve your winning rate.
Ren Cai is not scary, the scary thing is that there is no awe in the heart, and there is no preparation in hand.
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