how to find circumcenter

The problem is described as a point in two-dimensional space design a structure, on the basis of which a structure for the triangle design. Separate functions are designed to calculate the perimeter, area, center, and centroid of the triangle. Enter three points to output the perimeter, area, Circumcenter, and center of gravity of the triangles that comprise these three points. The result retains 2 digits after the decimal point. The output of the sam

The two-fork search tree is described earlier, and he has no problem with the efficiency of finding and inserting in most cases, but he is less efficient in the worst case. The data structure of the balanced lookup tree introduced in this article and later in this article ensures that the LGN efficiency can be achieved in the worst case, and we need to make sure that the tree remains in equilibrium after the insert is complete, which is the Balanced search tree. In a tree with n nodes, we want t

Use the find/find-all match method to find the list element. find-allmatchFind a sublist in the list Assume that the database contains several rows of records. The returned results of the newlisp mysql module use a list to indicate these rows of records. Each element is a list containing a row of records, each record l

Find a sub list in listAssuming that there are several rows of records in the database, the newLISP MySQL module returns the result is a list representing this number of rows of records, and then each element is a list, which contains a row of records, each row of records list contains a number of lists, Each list has two elements: a field name and a field value.Now we can use the Find method to

Our commonly used file search feature on Windows looks simple, but often finds it troublesome to find a file on Linux!According to the habits of personal use, I found: I would like to find a file in the general situation will know these parts, one is the file approximate scope, the second is the file name of a character or keyword, the third is the suffix. And, in the process of using Linux, we usually just

1. the following error occurs during Firefox Compilation: /Usr/bin/ld: cannot find-lpthread /Usr/bin/ld: cannot find-lstdc ++ /Usr/bin/ld: cannot find-LM /Usr/bin/ld: cannot find-lC Strange, this is the most basic development library, and it is not installed? 2. According to the prompt information before

How to implement multiple find boxes just fill in at least one find content to find Apply.html Crms-new Classroom Entry 2.php Crms-new Classroom Entry Results Create short variable names $Cno =$_post[' Cno ']; $CID =$_post[' CID ']; if (! $Cno) {$Cno = "%";} if (! $CID) {$CID = "%";} if (!GET_MAGIC_QUOTES_GPC ()) { $Cno = Addslashes ($

An order to explainCommon example:find Path-option [-print] [-exec-ok command] {} \;The directory path that the Path:find command looks for. For example, use. To represent the current directory, and/to represent the system root directory.The-print:find command outputs the matched file to standard output.The-exec:find command executes the shell command given by the parameter to the matching file. The corresponding command is in the form of ' command ' {} \;, note the space between {} and \;-ok: T

Find commandSyntax: Find search path Match expressionFunction: This command is used to find eligible files in the specified path, the search path can be multiple directories, and different directories are separated by spaces(1) Matching expression 1-name FileName: The name of the file to find. You can use the wildcard

The Linux Find command searches the directory structure for files and performs the specified actions. The Linux Find command provides quite a lot of search criteria and is powerful. Because find has powerful features, it has a lot of options, most of which are worth taking the time to look at. Even if the system contains a network file system (NFS), the

 Each operating system is made up of thousands of different kinds of files. The system itself includes files, users ' own files, shared files, and so on. Sometimes we often forget where a file is on the hard drive. Looking up a file in Microsoft's Windows operating system is fairly straightforward, as long as you click "Start" on the desktop-"search" to find files and documents on your local hard disk, on the LAN, and even on the internet. However,

Each operating system is made up of thousands of different kinds of files. The system itself includes files, users ' own files, shared files, and so on. Sometimes we often forget where a file is on the hard drive. Reprinted from http://blog.csdn.net/yi412/article/details/19212335 Looking up a file in Microsoft's Windows operating system is fairly straightforward, as long as you click "Start" on the desktop-"search" to find files and documents on you

Lead:whichWhereisLocateFindFindwhich can only query commands#which rpmWhereisYou can query the location of commands and configuration files#whereis rpm#whereis passwdWhatis#whatis rpm with the same effect as the following command, the query rpm command in which chapter man has explained#man-F rpmFind#find path condition-dependent operator [-exec|-ok Action]PathThe default path is not written when you are looking for current pathsCases:/etc.///var/ftpC

In Linux, the common commands for file lookups are locate and findLocate works: Global lookup, according to the system file database lookup, the database will be automatically generated during the same run for a period of time, provided that the Mlocate package is installed.The Mlocate package installation generates the Locate command and the UpdateDB command, which is the command used to manually generate the database used to locate find files, which

1. FindFind is the most common and powerful look-up command you can use to find any file you're looking for.Find uses the following format:　　$ find ---If no parameters are added, find searches the current directory and its subdirectories by default, and does not filter any results (that is, all files are returned) and displays them all on the screen.Examples of u

"Find" in the Linux system is a more commonly used file Lookup command, there are many ways to use, you can find files, files directory, file update time, file size, file permissions and compare file time. The following is a tidy "find" common method, convenient for future needs of the time directly to this article to view.One,

Find the most recently modified files with the Find command under the Linux systemStudied: http://www.cnblogs.com/hechunhua/p/4860544.htmlFind application instance finds the. php file under the current directory that was modified in the last 30 minutes find. -name ' *.php '-mmin-30 find the. php file under the current

(1) which [-a] cmdname1 cmdname2 ...Role: Locate a command, from the environment variable path, locates/returns the path to the executable file that matches the specified namePrinciple: When executing the which command, which will look in the current environment variable path for the executable file name that matches the name of the given command, without the-a option, and return the path to the first matching executable, or return the path name of all executables that meet the criteria, in turn

Tags: find command suid sgid sticky bit find command option This chapter blog related Linux knowledge points Different points for find versus grep:Find is a file Search command--used to find files in a specified directory, and grep as a text Search command--to search the target file according to a user-specified

Linux file Lookup mainly includes: Locate and find1, locateSimple to use, based on database lookup, not real-time, usage:Locate FILENAMEManually updating the database (time may be longer)UpdateDB2. FindReal-time, accurate, powerful, usage:Find Path Lookup Standard post-discovery action(1) Path:. Or./both represent the current directory(2) Search criteria:' FILENAME ' Exact file name matching (wildcard *?) is supported. []) ' FILENAME ' file name fuzzy match (not case)-regex PATTERN