donald knuth

measures were taken to protect data Sensitive data needs to be encrypted when being uploaded or transmitted over the Internet, because it is likely to be intercepted during this process. Don't complain. This is the most basic security requirement. This also means that it is not recognized to send data in plain text, and also does not eliminate our own encryption methods and obfuscation targets. It is difficult to write a secure encryption system-you can see the wep situation-so we may wish to u

modification is that the program can be debugged directly through emacs in GAUSS, which reflects the UNIX philosophy: To solve as many problems as possible in a simple way, it is certainly a good choice to solve one hundred problems in one hundred ways, but it is a master to solve one hundred problems in only one way. At least it doesn't need to be like in Windows now, every time you come into contact with different software or even different versions of the same software, you have to spend tim

to be like the poem", The Essence is "the information carrier", Inside is "creates the world within the procedure".External is the style of the program. About the style of the program, a lot of programming books have talked about, to each programmer to form their own program style . The program is like poetry, which is the author's style. My program also has a certain style, but also not reach the "poem" This realm, hope that through the study of this book, can draw a little poetic it.Program e

DescriptionTEX is a typesetting language developed by Donald Knuth. It takes source text together with a few typesetting instructions and produces, one hopes, a beautiful document. Beautiful documents use Double-left-quote and double-right-quote to delimit quotations, rather than the mundane "which What's provided by the most keyboards. Keyboards typically do not has an oriented double-quote, but they does

processes. Many programmers are proud of their coding style, some even for code. Writing a logically clear code is complicated and difficult to understand--and that could make a big contribution to his position in the department manager's mind. or just to install X (cover your face)? ... Just teasing: D. Complex obscure code, or syntactic quirks, the basic unreadable code, is difficult to get the approval and maintenance of others. The ability to be creative and whether to stick to the quirks o

to read- And the real time savings are usually just a few milliseconds. This is known as premature optimization.Well-known computer scientist Donald Knuth once said, "Premature optimization is the root of all evils."In other words: Our code needs to be clear, clean, and then focus on finding the real bottleneck and optimizing it. Never try to optimize prematurely.4. Using Global variablesIn other words, so

mathematical logic, we would be familiar with it, because it is better than computers.Programming Language, Lisp is more like mathematics. It is more basic and primitive than C/C ++, just like Donald E. according to knuth, computer science is just a beautiful coat of mathematics, without basic mathematical knowledge such as discrete mathematics, composite mathematics, probability theory, abstract algebra,

on here? She just moved down the mouse to see her own program, the status page refreshed, accepted Mark disappeared. She sat there, with only a wrong answer procedure in sight.She handed in a water problem. The accepted Mark appeared again, and the light came. The light fell in the engine room, where it suddenly became a podium. She stood on the podium. The podium was covered with red carpets, and Ioi's badge hung on the opposite wall, and the applause burst under the table. Even better is Du Z

on the green word constantly flashed, how comfortable ah! Hey, what's going on here? She just moved down the mouse to see her own program, the status page refreshed, accepted Mark disappeared. She sat there, with only a wrong answer procedure in sight.She handed in a water problem. The accepted Mark appeared again, and the light came. The light fell in the engine room, where it suddenly became a podium. She stood on the podium. The podium was covered with red carpets, and Ioi's badge hung on th

algorithmsCommunicating sequential Processes (PDF) –tony HoareCompiler Construction (PDF)Computer Musings (lectures by Donald Knuth)Data structures and algorithms:annotated Reference with ExamplesDatabase Fundamentals (PDF)Data-intensive Text processing with MapReduce (PDF)The definitive guide to Building Code qualityDesigning Interfaces by Jennifer TidwellDigital Signal processing for Engineers and scient

programmers? A joke, if I told you that programmers can be divided into eight levels, what would you think?1.The Immortal programmer: This is the highest level. The code you wrote did not go with you, but it was preserved (last forever). You will be immortal in the computer field. Other programmers will study your accomplishments and writings. You may have won the Turing Award, published a powerful paper, or invented one or more basic technologies known to all, and have influenced the developme

that this approach sometimes reduces the run time to O (N2), and is not more efficient than inserting a sort. It is important to keep the number coprime in the interval sequence, that is, they do not have a convention number other than 1. This constraint is not followed when simply taking the interval to n/2,n/4,n/8...1, so the efficiency of the hill sort is reduced. There are many ways to efficiently generate interval sequences, and this article provides a way for the Java code in the next

# Include # Include # Include # Include # Define BLOOM (1024UL * 1024UL * 1024UL) // 1G# Define HASH_RESULT 3Typedef unsigned char BloomFilter;Typedef struct _ hash_result {Size_t N; // how many resultsSize_t result [0];} HashResult;/* Brian Kernighan Dennis Ritchie hashfunction, used in Java */Size_t BKDR_hash (const char * str){Register size_t hash = 0;While (size_t ch = (size_t) * str ++ ){Hash = hash * 131 + ch;}Return hash;}/* Unix System Hashfunction, also used in Microsoft's hash_map */

From: http://cocre.com /? P = 808 The following typical introductions are from English. Some of my translations are not very good. Therefore, I provide a Chinese-English comparison. If you have any questions, please correct me. Premature optimization is the source of all evil. Premature optimization is the root of all edevils!-Donald Knuth Walking in the water is the same as developing software with a req

[The Euclidean algorithm] is the granddaddy of all algorithm that has survived to the present day. -- Donald Knuth Solution 1: Euclidean Algorithm Recursive Implementation Euclidean Algorithm (Euclidean Algorithm) (Euclid's Algorithm) is generally referred to as the Division of the moving phase for finding the maximum public factor. The alg

not often encounter such a situation, so they have little resistance to bad management habits. In this case, managers only need naive new users. If you want to have a great team and a great product, you can remind people to avoid losses once and again when making a wrong decision. But this happens only when you have the courage to admit that you are not at all. Enthusiasm is gradually dispersed, so you cannot say that your age limits your enthusiasm. If so,

Step 1: recognize what cainiao should do I graduated this year and left the school. Looking back at the four-year college life, there are successes and failures, but there is still a lack of strong colors. Upon graduation, our teacher gave me a pair of words in A Dream of Red Mansions: "Everything in the world is learned, and practice is an article." Let me reflect on myself and summarize how to continue. In fact, I feel that I have been working very hard and have always regarded as a computer

Copyright:Original works. If you need to reprint them, please contact the author. Otherwise, legal liability will be held. Java random number SummaryRandom numbers are widely used in practice. For example, a fixed-length string or number must be generated immediately. You can also generate a number with an indefinite length or make a simulated random selection. Java provides the most basic tools to help developers achieve this.I. Method of Generating Java random numbersIn Java, there ar

Donald knuth said,"Premature optimization is the source of all evil(Premature optimization is the root of all edevil ). This may be exaggerated, but"Premature Optimization"I think we should not ignore the harm. At the same time, I think the concept of "premature optimization" is not exclusively written.ProgramExamples of life are also everywhere. Believe it or not, check whether you have encountered the fol

absolutely is not, but I think it's often more important than scalability, for example. with good maintainability, you can achieve the other abilities easily and cost-interval tively. sure, this is a huge simplification, but it Makes an important point. -- code maintainability and scalability are more important. to conclude this, my current belief is that it is worth giving some attention to the database. you shoshould see it as your friend and not your enemy. at the same time, however, h