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As the name implies, it is a fast calculation of the number of times the power. Its time complexity is O (log?) n), the efficiency is greatly improved compared with the simple O (n).The following is an example of 316:The general method of operation is:316 = 3*3*3*3......*3That would take 15 times to operate.And the quick power operation is as follows:316 = (32) 8 = ((32) 2) 4 = (((32) 2) 2) 2That would only have to be calculated 4 times.It is not difficult to see that the fast power operation is

is followed by the image loading time. The brackets after over indicate the memory consumed by image loading. [Plain] View plaincopyprint? 14:28:54. 614 hellocpp [4939: 707] cocos2d: Surface Size: 960x640 Cocos2d: cocos2d: cocos2d-2.1beta3-x-2.1.0 Cocos2d: cocos2d: gl_vendor: Imagination Technologies Cocos2d: cocos2d: gl_renderer: powervr SGX 535 Cocos2d: cocos2d: gl_version: OpenGL ES 2.0 IMGSGX535-63.24 Cocos2d: cocos2d: gl_max_texture_size: 2048 Cocos2d: cocos2d: gl_max

General Linux Add Cron task is in/etc/crontab, but due to openshift permission wood is so open, so if you need to set up a scheduled task, you need to add your SH file under the following folder, Because I need to run it once a day, so put it under the Daily folder, use the chmod 711 restart.sh command, or use WINSCP to change its permissions to 711.However, when you finish the above steps, you will find th

float 0x0006 Wave_format_alaw 8bits ITU-T G.711 A-law 0x0007 Wave_format_mulaw 8-bit ITU-T G.711 U-law 0xFFFE Wave_format_extensible Attention:1) wave file default byte order is the small end order, if the big-endian order with RIFX instead of riff logo2) The sampled data must be even bytes3) 8-bit sampling data is stored as

TMP Try to create a few new directories to see: [Root@www ~]#cd/tmp[[email protected] tmp]#mkdir Test [[email protected] tmp]#mkdir test1/test2/test3/test4Mkdir:cannot Create directory ' test1/test2/test3/test4 ': No such file or directory ==There is no way to create this directory directly! [Root@www TMP]#mkdir-p Test1/test2/test3/test4#Add this-p option to help you create multi-level catalogs yourself! Example: Create a permission of rwx--x--directory of x [root@www TMP]#mkdir-m

(called the primary Key Class), and the primary key class needs to implement the serializable interface, overriding the Equals method and the Hashcode method, for the same reason as above.Take the student class as an example to achieve the configuration of the two mapping federated primary keys:Two properties in 2.Student as federated primary key propertiesStudent class:public class Student implements Serializable {//must implement Serializable interfacePrivate String Cardid;//cardid and name a

. -------------------------------------------------------------------------------- Command: printfSyntax: printf filehandle listNote: the syntax of printf in C language is also mentioned in Perl. Its usage is the same as that in C language. if you omit filehandle, stdout will also be regarded as a fixed filehandle. before introducing the printf function, let's take a look at the characters that transform symbols in the printf function. Symbol% C characters% S string% D integer% F floating

change, the GUI can be installed normally. However, on my server, the problem came again. The display displays "the input signal is out of range ". Dizzy. There are many solutions on the Internet, but none of them works. In CentOS 6, we usually add the "vga = 711" parameter during installation and startup, however, in CentOS 7, this method has no effect. Solution to issue 6 was unexpectedly successful !!!! The solution is vmlinuz initrd = initrd.

");Goto error;}} // Add audio stream into audio group.If (! Group-> add (stream) {// add native stream to GroupJniThrowException (env, "java/lang/IllegalStateException ","Cannot add audio stream ");Goto error;}// Succeed.Env-> SetIntField (thiz, gNative, (int) group); // convert the native Group pointer to an integer variable and store it in the member variable of the Java instance. Let's take a closer look at the above processes. When creating the AudioCodec on the native layer, the system obt

directories:/test/A/B Under the/data DirectoryMkdir-m 711-p/data/MODE/A -- recursively create the MODE/A directory in the/data directory and specify the permission of directory A as 711.-- Rmdir: delete a directoryFormat: rmdir [OPTION]... DIRECTORY...-P: Delete the directory if its parent directory is empty.Example: rmdir-p/data/test/A -- after directory A is deleted, the directory test is empty and delet

into PS encapsulation, you can also. When audio data exists, add the PES header to the video PES. The sequence is as follows: PS package = Ps header | PES (video) | PES (audio), which can be sent in RTP encapsulation. Gb28181 specifies the data load type transmitted by RTP (refer to gb28181 appendix B), 96-127 of the load type Rfc2250 recommended 96 indicating PS encapsulation, recommended 97 for MPEG-4, recommended 98 for h264 That is, the RTP packet we receive must first determine the load ty

as group loss; Quantization and CODEC distortion: 2 Problem details 2.1 Latency: It can be divided into transmission, processing, serialization (the time when data is transmitted to the interface, which can be ignored), transmission latency, one-way latency of signal around the Earth half circle about 70 ms, processing latency, for g.711 data with a packet size of 20 ms, there will be a fixed delay of 20 ms, while g.729 will have an initial delay o

Payload type (PT) Name Type No. of channels Clock rate (HZ) Description References 0 PCMU Audio 1 8000 ITU-T g.711 PCMMicro-Law audio 64 kbit/s RFC 3551 1 Reserved (previolet 1016) Audio 1 8000 Reserved, previuslyCELP audio 4.8 kbit/s RFC 3551, previuslyRFC 1890 2 Reserved (previusly g721) Audio 1 8000 Reserved, previusly ITU-TG.721ADPCM Audio 32 kbit/s

18th End-java XML Each sentence : We are not short of methods, lack of indomitable's determination and courage Beginner's experience : we should learn from it, not accumulate pain ( Author: jeep/711) [Java Notes | time: 2017-05-21| JAVA XML] 1. What is XML Extensible Markup Language: translate it over to extensible Markup LanguageXML technology is published by the organization, and is currently recommended to follow the XML1.

Linux File Management commandsLinux directories and PathsCD: Switch directoriesFor example: CD ~willhua, go back to user Willhua's home folderCD ~ or CD, it means back to your home folderCD-, which means back to the previous directoryPWD: Displays the directory where you are currentlyParameters: -P, display the current path instead of using the connection path mkdir: Create new directoryParameters: -M: Permissions for the direct profile, regardless of default permissions u

be written (write)x indicates that the file can be executed (if it is a program)Where: Rwx can also be replaced by numbersR------------4W-----------2X------------1-------------0Let's go:Represents the Add permission-Indicates delete permission= indicates a permission to make it uniqueWhen we all understand the above, then we often have some of the following permissions are easy to understand:-RW-------(600) Only the owner has read and write permissions-rw-r--r--(644) Only the owner has read and

* is we cloning a kernel thread? 697 * 698 * We need to steal a active VMS for that: 699 */OLDMM = current->mm; 701 if (!OLDMM) 702 return 0; 703 704 if (clone_flags CLONE_VM) {705 atomic_inc (oldmm->mm_users); 706 MM = OLDMM; 707 Goto good_mm; 708} 709 710 retval =-enomem; 711 mm = dup_mm (tsk); 712 if (!mm) 713 Goto Fail_nomem; 714 715good_mm:716/* IniTializing for Swap token stuff */717 mm->token_priority = 0; 718 mm->last_interval

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online learning garden will be added to the screen. directive : printfsyntax : printf filehandle LISTDescription : The Perl language also references printf syntax in C, which is identical to the usage in C. If you omit FileHandle, The same will be stdout as a default filehandle. Before we introduce printf functions, let's take a look at the characters that transform the symbols in the printf function. Symbol of its role%c character%s string%d integer%f Floating Integer%H Hexadecimal

The following are examples of the implications of common numbers represented by using absolute mode to modify directory permissions: Mode Significance 777 All users have read, write, and execute permissions on the file 755 The file owner has read, write, and execute permissions on the file, and group users and other users need read and execute permissions on the file 711 The file owner h