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, and the inverse index number for the -5,h is the reverse index number for the -6,t, and the reverse index number for the -7,y is the reverse number of the -8,p that is numbered-9.s = ' Python12 period ' S4 = S[-1]print (S4)Slice:[Index start bit number: Index end bit number]Gu Tou In spite of the tail.s = ' Python12 period ' S5 = S[0:6]print (S5)The slice starting bit index in brackets is 0 o'clock, which can be omitted.s = ' Python12 period ' s6 = S[:6]print (S6)s = ' Python12 period '

, Interval is one, The step size is 2s3 = S[:5:2]print (s3) #从头取值到结尾s4 = S[:]print (S4) #倒着取到第四个, the step must be written S5 = S[-1:-5:-1] #倒着取值, the reverse step print (S5) must be added2.3 Operating methods#对字符串进行操作, form a new string # Common: #全部大写upper () #全部小写lower () s2 = s.upper () s3 = S.lower () print (S2,S3) # # Verify that the password is not case-sensitive code = ' qear '. Upper () Your_code = input (' Please enter a verification code: '). Upper () if Your_code = = Code:print (' v

character length: Len ()s ==Len (s)print(l)(7) Determine what the string starts with#S.startswith ()s ='Alexwusir'S7= S.startswith ('Alex')ifS7:PasselifS.startswith ('BL'): PassPrint(S7)#s7 = S.startswith (' Alex ')----->true#s71 =s.startswith (' e ', 2,5)-------->trueWhat's the end of trying endswith yourself?#S.endswith ()s ='Alexwusir'S7= S.endswith ('ex', 0,5)ifS7:Pass(plus content)elifS.endswith ('

("...")The object new in the heap itself has a member Char []value to point to the string in the constant pool. S1==S2//Return flase because the address value is compared for reference typesS1.equals (S2)//return True because string overrides the Equals method, it only compares values without comparing addressesMemory diagram: String S1 = "Hello"; String s2 = "Hello"; S1==S2; True their address is the same as string s3 = new String ("Hello World"); String S4 = new string ("Hello World"); S3==S4

CPU is going to be memory access or I/O access.The T1 state is the address state, and the processor issues the address of the memory or I/O port to be accessed. The CPU sends out a high 4-bit address via the address/status line A19/S6~A16/S3, ad15~ad0 the low 16-bit address via the address/data line. Since 8086 of the 20-bit address lines are multiplexed with the state and the data line, the address signal must be locked up in the T1 state. In the T1 state, the address latch of the CPU enables

guide, you need the following... A htc Desire A PC A microUSB Cable A microSD card (to be made into a 'goldcard'-only necessary if your device is an operator supplied device) The downloads below Bils of steel (actually, I just made that up) Download To be ready for the guide, download the following items... The ISO image-download/mirror/torrent MD5: 854bdbb3c5898b15f92b5991204c9288 Once you have this on your machine, you're ready to start!

Publisher: Send_linux Date: 2008.09.24[Saidi Net News] The Forbes article on September 23, Beijing time, pointed out that every time Apple releases a new iPod, it will be regarded by the technology industry as the leader in the digital music field, its competitors, Microsoft and Zune, will once again become targets of ridicule. The collision between the two giants attracted almost the attention of the entire industry, making SanDisk always have no chance to become the focus of attention in the i

physical memory needs to be released, for the currently running program. The released space may come from some programs that haven't been operated for a long time. The released space is temporarily saved to the swap space and will be executed by those programs, then, the stored data is restored from the SWAp to the memory. In this way, the system always performs swap switching when the physical memory is insufficient. In fact, swap adjustment is crucial to the performance of Linux servers, espe

Install OpenELEC on Raspberry Pi 2 The next Raspberry Pi 2 has finally arrived, with its small size and ultra-low power consumption. In combination with OpenELEC, it has become a good choice for domestic HD players and simple NAS. This article will briefly describe the tossing experience.Install OpenELEC There are many Linux distributions based on Kodi and suitable for Raspberry Pi. OpenELEC is chosen mainly because of the simple implementation I expected and its fast support for recently listed

)-Four different resolution degrees are supported. The actual resolution level data is not mentioned.-Supports removable MicroSD Card storage devices-Supports NFC for electronic silver packets (Wallet Experience) Comments: The Transformation of the above four hardware will undoubtedly greatly enhance the competitiveness of Windows Phone 8. The article points out that "multi-core", not just a "dual-core" processor, does not exclude the suggestion that

them, the external projection module "Ghost" can be placed on any plane 70-inch projection screen, especially to support ultra-short focus projection, in addition to an integrated bracket for any angle projection, which is quite convenient for business people. While Moto Z has 4 noise-cancelling microphones, Moto Z play has 3 noise-cancelling microphones, which is a professional teleconferencing system when the external JBL Speaker module "rub-tone".It is worth mentioning that the Moto Z series

to install any computer software. The USB connection of A1200 is set to "large-capacity memory" mode, and the data cable is used to connect the computer. The computer displays a new hardware, the NT system automatically installs the driver. In this way, the computer will have an extra disk "MICROSD ". That is, the MICRO in your machine.SD card. You can store various files and mobile apps directly.2. If you need to transfer the corresponding file to t

The implementation of the two articles is very comprehensive inside some of the details are different, and now the project schedule is tense. Keep the finishing later. Article One: http://hi.baidu.com/menglinxi_a/item/35a43d5d50e79212abf6d753 A long type to a byte arraypublic static byte[] Longtobyte (long number) {Long temp = number;Byte[] B = new Byte[8];for (int i = 0; i B[i] = new Long (temp 0xff). Bytevalue ()//Save the lowest bit in the lowest bittemp = temp >> 8; Move 8 digits to the ri

This article will focus on learning about the MeeGo development system installation tutorial for Nokia N900. Before learning MeeGo, you must first learn how to build the MeeGo development system, I believe that you will be familiar with the MeeGo development system installation tutorial on Nokia N900 through this article. Install MeeGo Development System for Nokia N900 The following operations do not affect your existing installation. The existing system will not be damaged. Before installing th

drawing performance of the graphics processing chip to the image rendering ability, database I/O performance represents the processor and RAM access to the database efficiency, SD card Write/ Reading speed indicates that the ROM can read and write ability (currently the test requires more than 300MB rom free space, so if the body storage space/rom less than 300MB, then ignore the results, but the total score to deduct the relative points). The higher the theoretical score, the stronger the perf

idea, even if dead died, which also want to try, decisively find Google Godhttp://forums.androidcentral.com/general-help-how/333663- Unbrick-hard-bricked-samsung-galaxy-siii-sprint-virgin-mobile.htmlThe idea of seeing this post is to write the boot to the SD card, then boot through the SD, then press the power button to boot, see if you can start the phone or enter the coal mining mode.The first attempt failed and the downloaded file is incorrect should be yesFind the following post, there are

Minnowboard Maxminnowboard Max is a compact, cost-effective and powerful Development board for professionals and manufacturers. The open hardware design enables endless customization and integration of potential. It uses 64-bit intel® atom™? E38XX Series SOC CPU, integrated with Intel HD graphics. Video and digital audio output is available via HDMI with analog audio via expansion board alone. Other I/O include: Miniature, sata2,usb3.0 (host), USB2.0 (host), Gigabit Ethernet, I2C,SPI, and serial

InSamsung Galaxy S (Captivate)Install OnBT5 ARM Hello everyone First, congratulations to the BT team. They are so excited (they can have a system that supports the ARM series CPU) This is an article about how to install ARM BT5 on Samsung Galaxy S (SGS-Captivate), but this method should also be feasible on other devices of the same type (android. Mobile phone preparation 1. A new microSD card with more than 8 GB.2. ROOT permission. I used z4root to ge

support microSD memory card expansion, support a maximum of 48 gb of massive storage. With powerful entertainment features, the Nokia N97 has a professional 5 million pixel camera with a high-quality Carl Zeiss optical lens that supports dual-LED flashing; in terms of audio, Nokia N97 has a 5mm-inch headphone interface. The machine supports the basic full range of audio formats. ● Htc hero for Android Android is an open-source mobile operating syste

This morning, I took an hour out of my busy schedule to experience a banana pie that was sent a few days ago. The overall experience is quite good. First brush the SD card, I use the system is Raspberry Pi raspbian into the bananapi system, making the SD card See http://www.lemaker.org/resources/9-81/raspbian_for_bananapi.html. It also officially supports lubuntu, archlinux, opensuse, Android, and other systems. See http://www.lemaker.org/resources/9-38/image_files.html for supported systems