mappoint directions

in accordance with the 15*15 board, so if it is a different model of the board, please change the above (loopWhy the number 21? Because the slash on the length of less than 5 slash after removal, namely 15+15-1-(4+4) [less than 5 slash] = = 21;So if the chessboard is 30*30, that is 30+30-1-(4+4) = 31;Therefore, the outer loop is the number of bars that traverse the slash.The rest is understandable based on the second code.Anyway, this is a way of judging the best understanding I've ever thought

to provide a copy of the database at the query end of the pressure to deal with the concurrency of the search.Summarize:For the database development direction mainlySub-database replica replication extensions and main Library extension extensions,The main concerns and considerations in the extension are data consistency,To ensure data consistency, a large number of validation algorithms are required to ensure that the replica library data and the master library data are consistent through multi

. Perfect daily application, like Linux does not, with wine compatibility optimization, do not ask for more, I think the daily application has one hundred or two hundred optimization good can be.3. Drawing on the advantages of other distributions, I think there should be someone to do the test comparison work. to elevate yourself.4. Stability and speed are important5. Customization is also important, Deepin installation of the installation process should be optional, with minimal installation an

In the game, there is a situation where oblique movement is achieved by simultaneously pressing two directions to form a diagonal line operation. In Win32GDI development, multiple keys can be obtained by adding the keyboard status in the logical loop. However, the keyboard events in Silverlight are single and cannot be obtained, yuan You raised a question: my Flyer game can only be controlled from the upper left to the lower right, rather than diagona

. This is mainly because the sift algorithm only considers the scale and rotation without deformation, and does not consider the affinicity. Through Gaussian smoothing, the gradient amplitude near the key points has a large weight, which partially makes up for the instability of the feature points that do not consider non-deformation. Generally, discrete gradient histograms must be interpolated to obtain more precise direction and angle values. (This is the same as interpolation in key point sea

I plan to start learning programming from C. But I recently learned about PHP. Ask whether the two are in two development directions or integrating with each other. Which of the following learning cycles is easier to find after a job is similar to semi-work? This is because I want to learn programming, but I feel that PHP is also better at finding jobs in small cities, so I am here to ask for advice ~! I plan to start learning programming from C. But

"Letter"Mr. Zhou:Hello!I am a freshman majoring in computer science, first of all thank you very much for reading this letter.My freshman major has tried Java Web background development and Linux C + + background Server programming Two technical directions, a total of 30,000 lines of code volume accumulated.I would like to ask you to help me to point out the question is:1. Online Many people think that Linux server development learning difficult, long

Sometimes the value of the measurement position has a directional effect that can be quantified statistically but may not be explained by a known identifiable process. This directional effect is called anisotropy. Anisotropy is used to analyze whether the sample shows a different range in different directions. The tolerance angle is used to determine at which angle the proximity point is included or excluded until the bandwidth is reached. Bandwidth i

1. The client an HTTP connection consists of two directions, one for this HTTP connection, and the other for the HTTP connection output.After the IP address and port number are connected using httpclient, the HTTP output is set as the HTTP request parameter. The HTTP output is used for HTTP request settings.The HTTP input is used to receive data sent back from the server.There is a key http.openconencetion () method to initiate the connection. and Htt

Android custom component series [15]-menu implementation with four sliding directions, android custom Today, I accidentally implemented a menu that slides in four directions. It seems very interesting and smooth to slide. I have never seen such an application yet, in the future, it is hard to say whether it can appear in the application or whether it has practical value. If it has already been made, it will

to improve the efficiency of the program, but still need to update the interface in the UI thread, here can also use Surfaceview to do asynchronous update interface, but here, I want to know, Without modifying the Android system source, the NDK's limit is whether it can directly control the view's surface, so that it does not through the Java code directly to the interface refresh it? This may involve Linux file permissions issues, as well as the need to flip through the Android system source c

image size. Convert the code into externally-tuned CSS to make the webpage code easier. 　6. Perform GZIP compression on webpages You may be familiar with this. This feature requires support from your server. GZIP compression generally compresses webpages by 30%-80%, which is the most important optimization effect. The above six points are new to the author in slimming the site page. You can practice it. The author's site page originally had over 80 K, after these six

the enterprise website is not full, then the company's website is a failure. For example: The Enterprise website only products, but no product information, then you have any reason to let users buy things on your website. When the enterprise establishes the website, should treat oneself as a user, think about what kind of content you want to see, so that we can at least give the user a degree of trust. Therefore, the content of the site must not be incomplete.Third, the site can not lack of fea

interested in Python's build and run mechanics, you can dig into the depths of Python and see what the compiler does. If you're interested in the app, you can learn a few more of your own third-party packages. Learning this time, the spell is the realm, there is no definite method. Vast space to be explored.Basically, after learning the subject content, Python still has to work on the project to practice. There are many types of exercises, such as Python Cookbook. But the better way is to think

possible to trigger social fission if the cost of the next "community" was invested? What is the reason for the call? The third stage of the product, is it possible for the "apartment", "tenant" "platform" three-party win situation? What is the basis for changing the product direction frequently? As a result, some decisions are not optimally solved under the current resource conditions. Space limit, in this series (entrepreneurial product rethinking) in the next article, I will be

statistics, if the situation is certain, it can determine the direction. The question we are talking about today is that there is a certain risk to determine the direction based on only the turnover. Next we will start to talk about the non-reliability of the special data to determine the direction based on the turnover.Suppose we have a total of 10 orders, one of which has a quota of 10 W and the other 9 Orders has a quota of 1 K. This is an extreme example, however, due to the source of the 1

Question Link Question: Give an undirected graph and make as many edges as possible as one-way edges. The changed graph is still strongly connected. Train of Thought: Find out all the bridges, the bridge must not be changed to one-way edge. After that, not the bridge side can form N connected blocks and define the direction in the order of DFS. Code: #include Uva610-street directions ctions (Tarjan)

capital, the money market every day is a new challenge, every time the admission is a test of the level, I hate complaining about the market, the markets have no money not to invest in watching not sad, Sad is rich do not know how to use, earn do not know the reason, lost do not understand the reason, always think the market is not up to themselves, in fact, don't be so tired, you do not have too many audiences, come, the market is welcome, go, in fact no one knows you have come, since investme

The main idea: to give an image, any two points can reach each other, now requires you to turn this non-direction diagram into a map, and change any two points can be reached each otherProblem-Solving ideas: Bridge words must be to keep the two-way, so you can in the DFS when the bridge mark out, by the way in the DFS mark the use of which side can be#include #include #define N 1010#define M 1000010#define MIN (a) structedge{intFrom, to, next, flag;} E[M];intHead[n], Pre[n], lowlink[n];intTot, N

for a device with a different version number, rotate the view to make the corresponding rotation, then the version is different, how the code is implemented, how to limit the direction of rotation ? here is a small series of personal views!Version number is 3.5-5.0-(BOOL) Shouldautorotatetointerfaceorientation: (uiinterfaceorientation) tointerfaceorientation{return NO; Rotation is not supported with multiple rotation of the device;Return (tointerfaceaorientation! = uiinterfaceorientationlandscap