Programmer Group

Basic knowledge of Java java static final int a=0xff;; static final int a=067; static final int a=126; Decimal form 12.37F,-0.423D boolean length 1 byte Basic data type, reference data type toString() converts objects to character Conversion between String type and basic type java+java filename ...

This is also the school's curriculum, which deals with the factorials of 0-9. Why only deal with factorials of 0 -- 9? Ha ha, because in hexadecimal notation, 9! The factorial of can be put down by DX: AX, and it's only the factorial of one digit (single character input). If there's more, we have to think about circular calling. It's a bit tro ...

Coding Chinese in Java Step 1: coding concept The computer can only store numbers, and all characters will be converted into different numbers. Just like a chessboard, different words are in different positions, and different positions have different numbers. Some chessboards are very small, only numbers and English can be put Some are bigger, ...

The author's original Qftm release: https://xz.aliyun.com/t/6576 Misc Sign in problem RoarCTF {check in!!! } Six years of gold There is a section of base64 at the end of the file, which can be seen as a compressed package when decoded to hexadecimal. Password required to open compressed pack ...

Preface Mail collection mainly includes pop (mainly used for remote management of mail on the server on the client) and IMAP (interactive mail access protocol). The relevant modules poplib and imaplib are provided in the corresponding Python. Although POP3 is widely supported, it is outdated, and the implementation of POP3 servers varies grea ...

sed workflow Sed is an online, non-interactive editor that processes one line of content at a time. When processing, the currently processed rows are stored in a temporary buffer, called pattern space, and then the contents of the buffer are processed with sed command. After processing, the contents of the buffer are sent to the screen. Then ...

1. Byte stream In the previous learning process, we have been operating files or folders, and did not write any data to the file. Now we're going to start writing data to a file, or reading data from a file. 1.1 byte output stream OutputStream, an abstract class, is a superclass representing all classes of the output byte stream. The data ...

Question: Seek strings s[i... Len_1] and s[0... Comparisons of len_1]i>0 for the longest common prefix length Solution: At that time, the AC automaton was directly used and then the fail pointer was used. As a result, the input character was ASCII, which was super memory. The sum of the longest c ...

<?phpclass JSSDK {private $appId;private $appSecret;private $url; // If the front and back end are separated, it is an interface request, you must customize the current page address to send it, otherwise the signature error 20190905public function __construct($appId, $appSecret,$url) {$this->appId = $appId;$this->appSecret = $appSecre ...

SMTP Send Mail Send mail import smtplib from email.mime.text import MIMEText from email.header import Header # Configuring Mailbox Server smtpserver = "smtp.163.com" # User/password user = "admin@163.com" password = "123456" # Sender mailbox sender = "admin@163.com" # Receiver mailbox receiver = ...