online programming practice

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1. Use the shell or Python to write a square (oldboy4.sh) to receive the number entered by the user.For example: with the + number implementation[Email protected]:~/script$ vim Oldboy_squarel.SH[email protected]:~/script$./oldboy_squarel.SHPlease Enter a number:4++++++++++++++++++++++++++++++++[email protected]:~/script$CatOldboy_squarel.SH#/biin/Bashread-P"Please Enter a number:"Num for((i=0;i)){ for((j=0;j2; j + +)) { Echo-N"+" } Echo}2. Write a isosceles triangle (oldboy2_

Notoginsengcoutshowbase; - intp=fn (); theCin>>i; + Switch(P) A { the Case -: +cout"hexadecimal converts to""decimal"Endl; - Break; $ Case 8: $cout"Octmal converts to""decimal"Endl; - Break; - Case Ten: thecout"decimal converts to""decimal"Endl; - Break;Wuyi default: the Break; - } Wu while(1); - return 0; About $}Exercise 3Exercise 5 6Exercise 9exercises One by oneExercise 14Use for to control the number of field

(1)4. Deleting elements based on valuesArray.remove (' both ')3.3 Organization List3.3.1 Use method Sort () to sort the list in a permanent orderSort () AscendingSort (reverse = True) Descending3.3.2 Use function sorted () to sort a list temporarily3.3.3 the Print List backwardsArray.reverse ()Print (array)Method reverse () permanently modifies the order of the list elements, but can revert back to the original ordering order at any time, and only need to call Reserse () on the list again3.3.4

this to an internal class or thread. The "This" itself may not be ready!(Workaround: Use engineering methods; Define threads first, add another method to start this thread)3.3 Thread closureWhen a thread does not need to share data, it is a good way to ensure thread safety by enclosing the data in threads. The program should avoid data escaping into other threads.For example, you can use local variables or threadlocal to store thread data.Ad-hoc Thread ClosureThis means that it is entirely up t

Statement: The title is from the "point of the sword". Algorithm principle please find your own book, not nonsense. Directly on the Python version code.Topic One: Give two integers a and B, ask for their and, but do not use the + and other mathematical operators.#不应该使用 recursion, too low efficiency Import = random.sample (range (1,100), 2= lst while Y! = 0 := X^y, (xy) Else: print("{} + {} = {}". Format ( LST[0],LST[1],X))Topic two: Calculate the number of 1 in binary.Import= random.randi

Similar to the multi-tasking scenario of a Web server, it is not possible to use only one thread to provide services externally. This way, efficiency and throughput are too low.However, it is not possible to create a thread with a single request because the cost of creating the thread is very high and the number of threads that the system can create is limited.So the executor appeared.The meaning of executor frame thread poolThread creation too little wasted server resources, in addition to the

Title: Given two 32-bit integers a and B, returns the larger of A and B. Requirements: no comparative judgment.Do not write the principle, directly on the derivation chart:Code:#find out the larger number of two numbers without any comparative judgment.ImportRandomdefFlip (x):returnX^1#method to be testeddefbincompare (x, y): Z= X-y sigx= Flip ((x>>31) 1) Sigy= Flip ((y>>31) 1) Sigz= Flip (((z>>31) 1)) Sigxysam= Flip (sigx^Sigy) Sigxydiff= sigx^Sigy func= Sigxysam*sigz + sigxydiff*SIGXreturnFunc

To kneel and beg for a simple way ......... .....Rules.1. This Council once 10 points plus 2 pitches in the back2 This council complements 10 points plus 1 pitches in the back3 this council 2 times less than 10 points that's all.10th round in any case must first cast 2 times 2 times more than 10 points to increase the investment 1 timesOut of 300Package com.lovo;/** * Bowling Credit Program * @author Abe */import Java.util.scanner;public class Bowling {public static void main (STR Ing[] args) {S

C language for some simple operation exercises.Swap two numbers:# include Output Pyramids of any character at any level:# IncludeOperation Result:Operation:# include Three numbers sorted by:# include  Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced. Getting Started with C programming-program practice (bottom)

(SOCKFD, (const struct sockaddr *) serveraddr, sizeof (serveraddr)) = =-1) err_exit ("Connect error"); Char buf[512]; while (Fgets (buf, sizeof (BUF), stdin)! = NULL) {if (write (SOCKFD, buf, strlen (buf)) = = =-1) err_exit ( "Write socket error"); memset (buf, 0, sizeof (BUF)); int readbytes = Read (SOCKFD, buf, sizeof (BUF)); if (readbytes = = 0) {cerr Attached-makefile. Phony:clean all CC = g++ Cppflags =-wall-g-pthread-std=c++11bin = Server Clientsources =

://blog.csdn.net/myhaspl/Rvalue referenceConsoleApplication1.cpp: Defines the entry point of the console application.Code:http://blog.csdn.net/myhaspl#include "stdafx.h"#include Using Std::endl;Using Std::cout;Using Std::cin;Class mypoint{Publicint n_x = 0;int n_y = 0;Code:http://blog.csdn.net/myhasplMyPoint (int x, int y) {n_x = x;n_y = y;cout cout }MyPoint (const mypoint AMP;MYP) {n_x = myp.n_x;n_y = myp.n_y;cout cout }MyPoint (MyPoint myp) {n_x = myp.n_x;n_y = myp.n_y;cout cout }~mypoint () {

::operator *") is not allowedcalling a host function("cuComplex::cuComplex") from a __device__/__global__ function("cuComplex::operator +") is not allowed This is because there is a problem with the Code provided in the original work. The code in the structure in the original work is cuComplex(float a, float b) : r(a), i(b) {} Modify it as follows: __device__ cuComplex(float a, float b) : r(a), i(b) {} Question 2 Error lnk2019: an external symbol that cannot be parsed [email protected]. This

(LISTENFD, (const struct sockaddr *) addr, sizeof (addr)) = =-1) err_exit ("Bind error"); if (Listen (LISTENFD, somaxconn) = =-1) err_exit ("Listen error"); Char buf[512]; int readbytes; struct sockaddr_in clientaddr; Remember: Be sure to initialize socklen_t Addrlen = sizeof (CLIENTADDR) here; while (true) {int clientfd = accept (LISTENFD, (struct sockaddr *) clientaddr, addrlen); if (clientfd = =-1) err_exit ("Accept error"); Print client IP address and port numb

Php practice course dedecms Programming 1 an Open Source cms system MVC-based Agile and quick website creation Our environment uses appserv and php5.2.6 After installation, a brief understanding of the various directory structures Easy to understand background Integration page: what we actually want to do. The industry term is "set Pages" Tab page: you can use a website to capture the Genie. Set pag

Linux signal Programming Practice (2) signal sending function and reentrant function In the early UNIX era, the signal was unreliable. It cannot be said that the signal may be lost, but a signal may occur, but the process may never know this. Currently, Linux calls unreliable signals before the SIGRTMIN real-time signal. The unreliable signal here is mainly because the signal queue is not supported, that i

Linux inter-process communication (IPC) Programming Practice (2) FIFO naming Pipeline In the previous article, we explained how to use anonymous pipelines to transmit data between processes, and also saw a defect in this method, these processes are started by a common ancestor process, which makes it inconvenient for us to exchange data between unrelated processes. Here, we will introduce another communicat

[Java concurrent programming practice] -- "J. U. C": Condition, j. u. ccondition Before reading Condition, let's take a look at the following example: Factory type, used to store and retrieve goods: Public class Depot {private int depotSize; // repository size private Lock lock; // exclusive lock public Depot () {depotSize = 0; Lock = new ReentrantLock ();} /*** warehouse receiving ** @ param value */public

= text. LENGTH/2; I >= 0; i--) { char temp = *pstart; *pstart++ = *pend; *pend--= temp; } return text; }} Array inversionThe easiest way to understand is often the most efficient and why is it so efficient?public static string Arrayreverse (string text) { char[] Chararray = text. ToCharArray (); Array.reverse (Chararray); return new string (Chararray);}XOR operationDoes it have a lot of force? In fact, for the understanding bi

not more than 500 (in million tonnes) represents the market's maximum demand. The next line gives an n positive number indicating the stock (in million tonnes) of each mooncake, and the last line gives a positive n indicating the total price of each mooncake (in billions of dollars). The numbers are separated by a space.Output format:For each set of test cases, output the maximum profit in a row, in units of billions and accurate to 2 digits after the decimal point.Input Sample:3 2018 15 1075 7