java test questions

title 3 , delete /tmp/oldboy/ under passwd other than the file. 7, on the basis of the title 3 , please print the/etc/passwd file in the line 2-5 (no less than three methods)8, on the basis of the title 3 , use the command to replace the root position and /bin/bash location in the passwd file ? Will all the first and last column locations be swapped? Cases:Default: Root:x:0:0:root:/root:/bin/bashAfter modification: /bin/bash:x:0:0:root:/root:root9 . Replace all strings containing oldgirl in the

Recently in order to take the exam to crawl online soft exam questions, in the crawl encountered some problems, the following article is mainly about the use of http://www.php.cn/wiki/1514.html "target=" _blank "> Python Crawl The soft exam question of the IP automatic agent of the relevant information, the article is described in very detailed, the need for friends below to see it together. Objective Recently there is a software Professional level

The question has 6 big questions, the choice is 4 questions, the following recollection is one of the 4 questions.1. ($ "$") (1). Trial: $$\bex x,y>0,\ x\neq y\ra (x+y) \ln \frac{x+y}{2}2. ($ "$") (1). Set $\al_1,\cdots,\al_m\in\bbr^n\ (M\leq N) $. Test: $\sed{\al_1,\cdots,\al_m}$ linear Independent is equivalent to $$

1. Question (1, 12, correct √, incorrect answer) 1. the purpose of software testing is to identify as many Software defects as possible. (Yes) 2. beta testing is a type of acceptance testing. (Error) 3. the acceptance test is implemented by the end user. (Error) 4. The tester does not need to submit any artifacts before project initiation. (Error) 5. About 80% of Software defects can be found in unit tests. (Error) 6. Code review checks whether Sou

SELECT message.id id,message.title title,if (message. ' Hits ' is Null,0,message. ' Hits ') Hits,if (comment. ' id ' is null,0,count (*)) number From message left JOIN comment on message.id=comment.id GROUP by message. ' ID ' (3) The above Content management system, table category to save the classification information, the field is as follows (3 points) category_id Int (4) not NULL auto_increment; Categroy_name varchar (+) not null; When a user enters an article, select the article category by

[Training Questions] exam confidence test is the smallest cut, and training exam Question description: There are N people in the test room, A and B. If student I is in Test Room A, the total confidence value increases by xi; If student I is in Test Room B, the total confiden

Typical cup test questions Test Item: cup Requirement test: view the cup instruction manual Interface Test: view the appearance of the cup Functionality: use water cups for water leakage. Safety: whether the cup contains viruses or bacteria Availability: The damage d

Entry questions, the majority of test algorithms, common learning!1. Programmed to count the number of positive numbers, negative numbers, and zeros in the 50 real numbers entered.2. program, calculate and output all the integer solutions of the equation x2+y2=1989.3. Program, enter a 10 binary positive integer, and then output its corresponding octal, hexadecimal number.4. If a number is equal to the sum o

C Language test questions (standard answer)I. Single topic (2 points per quiz, total 20 minor 40 points)1.1-1.5 B D a c b 1.6-1.10 c a D b C1.11-1.15 A D d C b 1.16-1.20 d a b c aTwo. Fill in the blanks (2 points each, total 10 empty 20 minutes)2.1 52.2.2 10; 12; 120.2.3 110.2.4 0x801005; 0x801014.2.5 2; 5.2.6 Automatic.Three. Short answer (4 points per question, total 5 20 points)3.1 Global variables can b

First, describeTopic 1: Statistical input of a string, respectively, the number of uppercase and lowercase letters in the string, and the number of occurrences.The first method uses the character wrapper class method: Islowercase (), Isuppercase (), IsDigit () to determine whether the character is such, and the second method is counted directly using the Char range comparison.Topic 2: The user enters a string to be counted, and then enters the number of times a word or character the user wants t

PHP Language Synthesis Review test questions (vi) one, single choice (a total of 52 small items) 1, d01ea1001 about information collection The following statement is correct is () (1 points) A, file_get_contents can be collected in the Web page introduced CSS or JSB, If the browser directly access a URL address can display pictures, then through the file_get_contents directly capture the URL can be directly

Html5+js Test Questions==============================================1. Talk about your understanding of JS closures:　　Closures are a relatively abstract concept, especially for JS novices. The explanation in the book is rather obscure, and it is the same for me.But he is also the ability to improve the JS can not be bypassed, almost every interview must ask questions