Programmer Think

SQL basic grammar interview questions The table is designed as follows: domain namedata type Field descriptionremarksClassVarcharclassPKNoVarcharStudent numberPKNameVarcharStudent nameManagervarcharClass cadre Y: Yes N: no domain namedata type Field descriptionremarksClassVarcharclassPKNoVarcharStudent numberPKMathsFloatMathematics achie ...

Because the interview big factory was hanged, I finally made up my mind to make up for it jdk1.7 is a segment lock implementation of segment lock, and 1.8 does not have segment lock Let's talk about the process of putValue: Throw a null pointer if the key is not empty Get table array Judge whether the table is empty. If it is empty, expan ...

Make complaints about big data left and right hands plus technology Tucao group to get more information preface As an object-oriented functional programming language, Scala combines object-oriented programming with functional programming to make the code more concise, efficient and easy to understand. That's why Scala is popular. As a ...

Source code analysis of Java thread pool ThreadPoolExecutor (I) JDK provides a simple way to create thread pools. Different types of thread pools can be created through the API provided by Executors, such as // Create a single thread pool; ExecutorService executor = Executors.newSingleThreadExecutor(); executor.execute(() -> { ...

VueRouter create // 1. Define components const RouterA = { template: `<div>This is Router A</div>` } const RouterB = { template: `<div>This is Router B</div>` } // 2. Create a Router instance const router = new VueRouter({ routes: [ { path: '/a', component: RouterA, }, { path: '/b', comp ...

appendix In 2014, I have sorted out the relevant java Concurrent Programming interview questions, here as an appendix to reorganize 1.There are three threads: T1, T2 and T3. How can I ensure that T2 executes after T1 and T3 executes after T2? Use join method The function of the join method is to make asynchronous threads execute synchronous ...

  The topic of stock trading algorithm can be said to be a very interesting existence in the basic algorithm. A slight change in the subject may lead to a completely different view of the problem. Don't say much. Let's have a look Given an array price, its second   I elements   prices[i] represents the price of a given stock ...

PS: Sword finger offer is not only an interview guide that many students will refer to when looking for a job, but also an algorithm Guide (the main reason why it is so popular is that it provides a step-by-step optimization solution, which I think is very friendly). Now many Internet algorithm interview questions can be found here. For the con ...

1, Please talk about your understanding of volatile 1. volatile is a lightweight synchronization mechanism provided by Java virtual machine Ensure visibility; Atomicity is not guaranteed; Prohibit instruction rearrangement 2. Talk about JMM (Java memory model) Java Memory model itself is an abstract concept and does not really exist. It de ...

No, let's start! Guiding language At present, many large factories require handwritten code during the interview. I once saw a large factory require online code during the interview. The topic is: handwritten the implementation of a queue without using the existing Java queue API, and the data structure of the queue, the way to join and leave ...