phone quiz

String Char 5. If the value of my int variable variable is 5, what is the value of variable after executing the following instruction?variable++; 4 5 6 7 6. The following code is available:int a (a), B (Ten), result (0);result = a + B;Finally, what is the value of the variable result? 0 10 20 30 7. If I define a variable like this:int const height (15);So, if I write a command in the program,height++;After running the program, how

Study a lot of ways of networking, even the tcp/ip,shock,http of the relationship is clear, and finally figure out how to use GET or post in unity to communicate, or a little excited, but do not rule out a better way, heard unity can write their own shock. I have not done any research here, it is to use Unity's own WWW class to achieve.This is a relatively simple way, just pass the URL, there are many ways to further data transmission, and so on.I packed a CS .... Available for use, with the Mom

requests B. We can debug the entire process of HTTP requests with Chrome's Debugging tools C. The request line consists of three parts, namely the request method, the resource path, the protocol version number D. The status line of the response has the HTTP protocol version number, status code, and a status description E.http 1.1 is the version of the HTTP protocol that is now widely used in practical applications 　2. Judgment (2 points)The request body cannot be empty in a

suitable scenes? What to do when a compute-intensive task is encountered?Q:python High concurrency solution?Want to hear twisted->tornado->gevent if you can talk about Golang,erlang betterThe interviewer can explain here: does Golang,rust know? What is Numpy,pandas?About the operating systemCan be directly considered Linux, after all, the back end of the majority is to deal with LinuxThe difference between q:tcp/udp? What's going on with TCP sticky packets, and how to handle them? Does UDP have

Concurrentmodificationexception exception.Concurrent containers support concurrent traversal and concurrent updates.The main classes are Concurrenthashmap, copyonwritearraylist and Copyonwritearrayset, read this article to learn how to avoid concurrentmodificationexception.8. What is the Executors class?Executors provides some tool methods for the Executor,executorservice,scheduledexecutorservice,threadfactory and callable classes.Executors can be used for convenient creation of thread pools9.

Wrote a PHP random quiz verification Code, security personally think it is good. wangking717 wrote Security features One: 1. The generated content is not the final result, but a question-and-answer system that requires users to respond to the problem, with a more rigorous safety factor than traditional verification codes. 2. The colors, fonts, and positions of each number generated are random, so that it is difficult for others to capture the rule

in the 5.cell is best as large as uiimage, and if it is not the same, it will deform the uiimage. The cell shows a small map. The size of the small map and the ImageView click to enlarge, is to load larger images with large imageview. 6. Be sure to use the real machine when doing tableview. 7. If you are loading data from a network, be sure to do so in a sub-thread (asynchronous loading). 8. The loaded data must be cached locally. Do not add child controls dynamically in 9.cell.

declaring classespublic class Calculator {public int ope (int op,int num1,int num2) {int a =op + num1;SYSTEM.OUT.PRINTLN ("* * * operation result is" +a);int b= op-num1;SYSTEM.OUT.PRINTLN ("* * * operation result is" +b);int c=op*num1;SYSTEM.OUT.PRINTLN ("* * * operation result is" +c);int d=op/num1;SYSTEM.OUT.PRINTLN ("* * * operation result is" +d);Num2=a+b+c+d;return num2;}Test classImport Java.util.Scanner;public class Tse1 {/*** @param args*/public static void Main (string[] args) {TODO aut

=======================================================The similarities and differences between Java and C + +:Same point: Java and C + + have similar syntax and control structuresDifferent points: Java has no preprocessor or file contains;No pointers, no global variables;No structures and unions;All primitive types (basic types) have a definite size;No operator overloads;only single inheritance;A better definition of the exception, some exception handling is mandatory;No memory leaks;Security f

do not need to use the Futuretask class, it becomes very useful when we intend to rewrite some methods of the future interface and keep the original base implementation. We can just inherit from it and rewrite the methods we need. Read the Java futuretask example to learn how to use it.7. What is the implementation of concurrent containers?Java collection classes are fast failures, which means that when a collection is changed and a thread iterates through the collection using Iterators, the ne

, i.e., all of our training examples lie perfectly on some straigh T line. If J (θ0,θ1) =0, that means the line defined by the equation "y=θ0+θ1x" perfectly fits all of our data. For the To is true, we must has Y (i) =0 for every value of i=1,2,..., m. So long as any of our training examples lie on a straight line, we'll be able to findθ0 andθ1 so, J (θ0,θ1) =0. It is not a necessary that Y (i) =0 for all of our examples. We can perfectly predict the value o

1. query t.txt inside the line number of empty line, AAA ... As the first line650) this.width=650; "Src=" https://s5.51cto.com/wyfs02/M01/8C/DF/wKiom1h8Q4Sy-0TZAABAIT_jujQ926.jpg-wh_500x0-wm_ 3-wmp_4-s_2437759035.jpg "title=" 01.jpg "alt=" Wkiom1h8q4sy-0tzaabait_jujq926.jpg-wh_50 "/>[Email protected] ~]# grep-n ^$ t.txt3:5:[[email protected] ~]# grep-n ^$ t.txt |awk ' BEGIN {fs= ': '} {print '} '352. query t.txt line ending with ABCgrep "abc$" t.txt650) this.width=650; "Src=" https://s2.51cto.co

is the command prefix that does not require login (toggle) to run the command as root, which can be root?A. sudoB. BerootC. NowD. Impossible I forgot how to use the mkdir command, what should I do?A. In the Linux forum shouted, "Come on, do me a favor."B. Man mkdirC. Help mkdir Which of the following commands cannot be used to find files?A. LocateB. HelpC. Find Answer C C A A C B A A B B Part Three first lesson previewToday's class will come here, toget

technology operation characteristics: Multi-channel, macro-parallel, micro-serial. Concurrency: In the operating system, there are several programs in a period of time that are running from the start to completion, and the programs are running on the same processor, but only one program is running on the processor at any one time point. Throughput: throughput refers to the number of successful data transfers (measured in bits, bytes, packets, and so on) over a network, device, port, virtual cir

1. Write a script to find the last created time is three days ago, the suffix is *.log file and deleted.Answer:Find dir/-mtime +3-type f-name ". *.log"-exec rm-rf {} \;2. Write a script to move files larger than 100k in a directory to/TMP.Answer:Find dir/-type f-size +100k-exec MV {}/tmp \;3. Write a script to back up and package the database to the remote server 192.168.1.1/backup directoryAnswer:#!/bin/bash/usr/local/mysql/bin/mysqldump-uroot--default-character-set=utf8-p ' * * * * database >/

as follows:? 1 str.substring (M, N) + ""This creates an entirely new array of characters representing the new string. The method above sometimes makes the code faster because the garbage collector reclaims large unused strings, leaving only one substring.In Oracle JDK 7, SUBSTRING () creates a new character array without an existing array. The substring () Method in JDK 6 and JDK 7 shows the difference between JDK 6 and JDK 7 substring ().String vs StringBuilder vs StringBufferString vs Stringb

through the collection using Iterators, the next () method of the iterator throws a Concurrentmodificationexception exception.Concurrent containers support concurrent traversal and concurrent updates.The main classes are Concurrenthashmap, copyonwritearraylist and Copyonwritearrayset, read this article to learn how to avoid concurrentmodificationexception.8. What is the Executors class?Executors provides some tool methods for the Executor,executorservice,scheduledexecutorservice,threadfactory a

}6 return self (n-1) +self (n-2); 7 }8 Console.log (Fibo (6));5, to achieve the following syntax functions: var a = (5). Plus (3). Minus (6); 21number.prototype.plus=function(a) {2 return This. ValueOf () +A;3 };4number.prototype.minus=function(a) {5 return This. ValueOf ()-A;6 };7 varA = (5). Plus (3). Minus (6);8Console.log (a);6, to achieve the following syntax function: var a = Add (2) (3) (4); 9The answer comes from the Gaubee in-depth understanding of the JavaScript s

actual correct information; otherwise continue to generate random verification code continue to wait for user inputExample of generating a random CAPTCHA code:For:Def check_code (): import random Checkcode = "For me in Range" (4): Current = Random.randrange (0,4) If current! = I: temp = Chr (Random.randint (65,90)) else: temp = random.randint (0,9) Checkcode + = str ( Temp) return checkcodewhile True: code = check_code () print

) The variable i indicates which person is reported by the report, each continued to count should be 8 after the touch plus 1, that is, i=i%8+1; 3) in the process of making a count, to skip the already out of the person, the implementation of the array value is set to its subscript, each row out of a position, the position of the element will be changed to 0, if a position corresponding to the array element value is 0, the change position is skipped. The position where the arr