performance engineering interview questions

understand the process of solving the problem, and find out what the individual has done, how to do, and what has been harvested. This is the accumulation of experience. The company ultimately needs to contribute to the work of the staff, so the need for experienced people to help solve the problem, then the ability to solve problems and thinking is very important. For students who do not have much experience, such as a new graduate or an intern, then they need a good foundation and some person

. AutoLayout is not always perfect, and knowing that there are other options is always good.Note:At least the hard-to-get facts of Autolayout,frames's notoriety will surely be a red flag for the interviewer. Now no sane person will do cgrect framework calculations unless it is absolutely necessary (for example, when you do some crazy painting).14. How can I optimize the scrolling performance of a dynamically sized table or collection view? One of the

]; Array[i] = t; } return array;}The above code contains the classic shuffle algorithm fisher-yates shuffle algorithm, namely the shuffle function. Please refer to my other blog for details.Operation Result:From the results, this method is also feasible.Fine think or there is a problem, for a larger array, no matter how efficient your shuffle algorithm (even if the above fisher-yates algorithm time complexity is O (n)), to random the entire array is still very large

and verify that their answers are correct. For example: Sort by execution efficiency from high to low: f2, f1, and f3. To prove that the answer is correct, you should know how to analyze the performance of your code. Python has a good program analysis package to meet this requirement. ...... The above are common questions and answers for the Python interview c

We are very grateful to all our readers for replying to our new Linux interview chapter. now we have started to learn about the interview questions and the chapters on the basic to intermediate Apache interview questions that we are paying attention to today. This will help

, not as binary floating-point numbers, so that the decimal precision of those values is saved. One character is used for each digit of the value, the decimal point (if scale>0), and the "-" symbol (for negative values). If scale is 0,decimal and the numeric value does not contain a decimal point or fractional part. Decimal and numeric are worth the largest range as a double, but for a given decimal or numeric column, the actual range can be limited by the precision or scale of the given

JavaScript is the official language of all modern browsers. As a result, JavaScript problems are encountered in all language developers ' interviews.This article does not talk about the latest JavaScript libraries, general development practices, or any new ES6 functions. Instead, talk about the 3 JavaScript problems that often occur during an interview. I asked these questions, and my friends said they aske

(throughput) collector? The throughput collector uses a parallel version of the new generation garbage collector, which is used for medium-sized and large-scale data applications. The serial collector is sufficient for most small applications, which require about 100M of memory on modern processors. 41. In Java, when can objects be garbage collected? This object can be recycled when the object becomes inaccessible to applications that currently use the object. 42. Will garbage collection occur

(avoid loss of modification) 2) Level two block protocol: increase transaction T on the basis of the first level blocking protocol must read the data R before reading the lock, you can release the read lock after reading (to avoid loss of modification and read dirty data) 3) Level three block protocol: increase the transaction T on the basis of the first level blocking protocol the lock must be read before the data R is read, until the end of the transaction is released (avoid loss of modificat

16 Embedded C language interview questions 1. Use the preprocessing command # define to declare a constant to indicate the number of seconds in a year (ignore the leap year problem)# Define seconds_per_year (60*60*24*365) ULHere I want to see several things:1). # basic knowledge of define syntax (for example, it cannot end with a semicolon, use of parentheses, and so on)2 ). knowing that the pre-pr

PB and Database interview questions First part: PB (PB6 ~ PB7) (10 points per topic) 1. Write a global function f_center (), and the parameter Aw_window to the window type so that it is centered automatically. 2. For information on how to access image or text type data in Pb, please give an example. 3. How to detect whether the data window has been modified. 4. Write a global function F_getparentwindo

pointers to functions that take an integer argument and return an integer People often claim that there are several questions that can be answered only after a book is opened. I agree with this statement. When I wrote this article, I checked the book to confirm the correctness of the syntax.But when I was interviewed, I expected to be asked this question (or similar questions ). Because I knew the answer t

The company wants to recruit Software testers and has eight interview questions (actually adding a combination for search). This is not necessarily reasonable, but it can screen out some questions that I don't understand. 1. In the past, what have you been engaged in? Which part of the job is best?2. What types of software testing are you familiar? Try to comp

Java interview 30 Question 1: What are the differences between final, finally, and finalize.Second, can anonymous inner class (anonymous internal class) be extends (inherited) other classes, or implements (implemented) interface (Interface )?Third, the difference between static nested class and inner class is that the more you say, the better (the more general the interview

10 HTML5 interview questions and answers are selected. This is the most common interview question for Web developers. After you have mastered these important interview questions, you will surely feel that your understanding has improved. Let's take a look ....,. 10 HTML5

memory, can be controlled by the parameter max_heap_table_size the memory table size, set this parameter, you can limit the memory table maximum size.2. If the data is temporary and required to be immediately available, it can be stored in the memory table.3. Data stored in the memory table, if suddenly lost, will not have a substantial negative impact on the app service.What kinds of data structures are there in the Redis database? 5 Types of data structuresStringWhen using string, redis** doe

wrapper type , which means that the wrapper type can be converted directly to the base data type , as shown in the following code:int m=100; Integer im=int N=im; The appeal code directly assigns m to the wrapper object IM, which is automatically boxed and then directly assigns the IM to the basic data type N, which is the automatic unpacking. Although the code on the surface is simple and convenient, however, in essence, the container still uses new to create the object, while unpacking is s