Preface
As a programmer, if you still don’t know anything in the face of new knowledge and new technology, and you still have a legacy of more than ten years ago, then you must be behind in knowledge and technology. If you fail to enter the management level, then you It will definitely be shot on the beach by the back waves of the Yangtze River.
Many programmers who are advancing with the times and good at learning are still the backbone of the industry. This just means that today's world has relied on one trick to travel around the world, and the era of life-long eating has passed. One must live and learn before he can walk in the world.
In my spare time at work, I will also turn over the interview questions of Dachang, so that I can always maintain the interview skills, and at the same time, I can understand the needs of Dachang for technology in order to prepare for emergencies, "Born in trouble, died in peace "The ancients don't deceive me.
Let me share with you a systematic growth and advancement route that I have summarized over the years of my own work, and share it for your reference.
1. Byte beating
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Talk about process-oriented, object-oriented, and aspect-oriented.
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The relationship and difference between pointers and arrays.
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Talk about Android handler.
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The difference and purpose of queues and stacks.
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Two stacks implement queues.
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Enter Url to the browser display process.
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http request method.
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The difference between get and post.
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The difference between surficeView and view.
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The app starts the whole process from clicking the icon.
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What is thread safety.
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What are the mechanisms for thread safety.
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How to ensure int plus plus (plus sign can not be typed) thread safety.
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What are the mechanisms for communication between Android threads.
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What are the cpu scheduling methods.
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Spatial locality and temporal locality.
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Optimistic and pessimistic locking of the database.
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Database index function, advantages and disadvantages.
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TCP congestion control.
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https encrypted transmission process.
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java memory model.
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What are the java garbage collection algorithms.
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Talk about the mark removal algorithm.
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Java four references.
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Talk about the principle of thread pool
2. Baidu
- jvm memory model, where are the various data in the class
- Class loading mechanism, process, parent delegation
- Class structure, object header
- gc algorithm and collector
- UNCLE
- How to prevent memory leaks
- volatile, synchronized, read-write lock, reentrant lock, mutual exclusion lock, spin lock
- ThreadLocal
- wait，notify，notifyall
- How is virtual memory implemented in the operating system?
- Use socket to realize a TCP connection
- Tree traversal
- Several ways of depth-first traversal
- Use stack to implement pre-order traversal
- What are the data requirements for the time complexity of binary search?
- How do you understand the course of data structure?
- HTTPS，CA
- FTP protocol
- The browser enters the URL to the page display process
- TCP packaging structure
- 7-layer network model
- Information storage method, application scenarios
- The method of inter-process communication, aidl
- Bundler principle
- Handler mechanism
- HandlerThread，IntentService，AsyncTask
- Click event distribution mechanism
- Sliding conflict resolution
- Broadcast registration method, difference
- Orderly and disorderly broadcast, local broadcast
- How to start the service, difference and purpose
- How to use the data provider? principle?
- How is the layout loaded? What are the ways
- Drawing optimization method
- Which source code of third-party libraries have you seen?
####三. Other - Algorithm related interview
- Screen adaptation
- Custom View
- Understanding of event delivery mechanism
- Opengl
- OpenCV
For more learning and discussion, welcome to join our knowledge planet!
There are many first-line technical experts in the group, as well as code farmers who are working in small factories or outsourcing companies. We are committed to creating an equal and high-quality Android communication circle. It may not be possible to make everyone’s technology advance by leaps and bounds in the short term. In the long run, vision, pattern, and long-term development direction are the most important.
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There are many first-line technical experts in the group, as well as code farmers who are working in small factories or outsourcing companies. We are committed to creating an equal and high-quality Android communication circle. It may not be possible to make everyone’s technology advance by leaps and bounds in the short term. In the long run, vision, pattern, and long-term development direction are the most important.
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