Preface

At the beginning of this month （ Probably 3、4 Number ） An intern in the development of a factory . I haven't received any notice , I thought it was cool . But I received it two days ago HR The phone , Inform me that my resume has passed the evaluation , Then prepare for the first round of interview , Still very happy hahaha . Today, we had a , I found that I couldn't answer many questions , It should be hanging up . I'm going to sort out a face-to-face classic , It's also convenient to resume later .

One side of the content

1. Self introduction. .
2. Say how you feel Android How much have you learned .
3. Talk about how you study Android Of .
4. Let's talk about the difference between static inner classes and non static inner classes .
5. Read about Java Related to memory leaks ？
6. understand Java Multithreaded synchronization method ？
7. In the process of your project development , Are there any application scenarios that use multithreading ？
8. Read about Android The difference between main thread and sub thread in ？
9. You can introduce Handler Do you ？（ Because I mentioned it several times before Handler）
10. During the development of your project , What application scenarios are used Handler Do you ？
11. Your project is using the framework, isn't it （ answer XMPP）, Tell me how you use XMPP frame .
12. You remember XMPP The name of the client open source library ？（Smack）
13. Your project involves DB Operation （ answer SQLite）, You know SQLite Some of the statements ？
14. Describe your DB The structure of the table .
15. Say after you receive a new message , Whole APP Operation process of （ Include UI Update 、DB The operation of ）. Then an application scenario is given , If you receive a large amount of information in a short time （ Such as 1s Ten thousand article ）, Do you think there are any hidden dangers in your existing implementation logic , Then there is no optimization idea .
16. How do you save your code （ answer Git And Github）, You know Git Some of the statements ？
17. Algorithm problem ： Judge whether the string is legal , The conditions are as follows ：
(1). Letters can be all uppercase
(2). Letters can all be lowercase
(3). It can be capitalized , All other letters are lowercase
Besides, it's all illegal , The return value is Boolean , Legal return true, Illegal return false, The string may contain symbols other than letters （ Numbers 、 Special symbols, etc ）.
18. Rhetorical questions .

Postscript

1. The interviewers of this big factory are very Nice, The whole interview process is in the form of a chat , At the same time, I will continue to tell me that there is no need to be nervous, no pressure , After that, the algorithm problem will also put forward some suggestions for further improvement .
2. Because it is recorded by memory , Maybe I don't remember the problem completely , But it should be about the same . You are also welcome to exchange experience with each other , Make progress together .
3. Finally, put your official account on it. ： WeChat search “ Tea migration ” Or scan the figure below , Usually update some programming related articles , Welcome to pay attention ~