<> Interview summary
<> company ： Alibaba
<> department ： Cloud computing Department
<> position ：java engineer
<> technological process ： Call two days in advance to inform the interview time , Prepare for the interview .
<> Questions asked ：
<>1, What kind of project experience have you had ?
<>2, What unit have you been to for internship ?
<>3, Look at your resume and ask about some of the items , match , Ask about the technical points .
<>4, Introduce yourself .
<>5,java Basic knowledge of ：
<>hashmap The principle of
<> The execution order of code blocks in the inheritance process
<>equals and hashcode method
<> Multithreading , introduce threadlocal
<> Variable declaration volatile
<>java Memory model （ Implementation principle of visibility ）
<> How does multithreading main space and thread space change
<> introduce concurrent package
<> Introduce thread pool
<>jvm Principle of garbage collection
<> Object and introduces several references （ difference ）
<> Design patterns
<>linux Basic command （cat filter error The line of ···）
<>java in sort Implementation principle of method sorting
<> Heap sort complexity
<>6, Thinking questions
<> Very large data files （20G）, Make a sort , Output the first ten digits , What would you do ?
<>7, What books have you read ? What are you good at ?
<>8, I was very impressed , More difficult problems ? How did it work ?
<>9, Introduce your strengths and weaknesses
<>10, What you're good at can add time
<> summary ：
<> In this Alibaba school recruitment interview process , A wide range of areas have been explored , Two words to describe , In place ! I feel like I can get it from 2 Three aspects to explain their own shortcomings ：
<>1, Narrow field of vision
<>1） The highest level of competition is provincial level , Did not participate in a higher platform to participate in a better competition , such as ACM,CCPC（ Data structures and algorithms are really important , Show one's ability
Important performance of ） etc . Limited vision and thinking .
<>2） Technology is developing rapidly , The technology that I know is not in the forefront of the country or the world , Too little technology learned , There is still too little knowledge of advanced technology .
<>2, The depth is shallow
<>
1） One should not only have strong practical ability , We should have solid theoretical knowledge . As can be seen from Ali's interview , A large factory pays great attention to basic knowledge and has a solid foundation , It's not enough to have a good class !!! We must read more books , Reading good books ! In this interview, each interviewer will ask what books he has read , What part of the book are you good at .（ Reading is so important !!!）
<>2） In the interview process , Every knowledge point will ask the bottom , Implementation principle , Implementation algorithm . Really Read more books ! Emphasize yourself again . When asked about multithreading this time , I hesitated , Can use far
Not enough , depth ! depth ! depth ! Emphasize it three times . Multithreading can write books , After earning the salary, I'll buy the multi thread books with good reputation first, and take a closer look at them ! One can't fall on one skill 2 Time ! This multithreading made my interview come true !
<>3） Look at the source code ! Look at the source code ! Look at the source code ! This is very important . Every time you type code, you need to understand the implementation principle , Implementation algorithm ! Don't let yourself be too shallow . Learning requires understanding , It's been a long time , Form a habit , days and months multiplying ,
It gets stronger .
<> last , Summarize the experience ： Make a summary every time you finish something every day , Record every important conversation , Organizing knowledge , The demand is very clear !
Technology