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  Convert number to string in C++

Prior to C++11, there is no built-in function in C++ standard library which can be used to convert numbers such as interger and double number to string.  There are many ways which can convert number to string. Since C++ is C compatible, we can use itoa() function to convert an integer to C style string. But this one can only convert integer to string, not double. For different types of numbers, we need to use different functions. string s = string(itoa(a)); Actually, we can also use strings...

   C++,conversion,number,string     2012-08-14 15:52:48

  Can a === 1 && a === 2 && a === 3 be true in JavaScript?

Lots of you may be aware that there is famous interview question which asks whether a == 1 && a == 2 && a == 3 can be true in JavaScript. And the answer to this question is YES. The reason is that == will do a non-strict comparison which will evaluate a to a number and this provides the possibility of dynamically return the value when every time a is accessed. Have you ever wondered whether a === 1 && a === 2 && a === 3 can be true? At first glance, it seems this ...

   JAVASCRIPT,===,STRICT COMPARISON     2018-04-06 12:17:29

  Is Facebook News Feed copied from Google+?

According to Sina Tech, Facebook released its new News Feed this week. However, this design is considered to be copied from Google social network the Google+.Google senior vice president of technology infrastructure Urs Holzle said: "Proud to see +Mark Zuckerberg promote G+.  Imitation is the sincerest form of flattery!"Although technology companies will learn from each other's designs and there are not any effective ways to display pictures on the web and mobile devices, Facebook's ne...

   Facebook,News Feed,Google+     2013-03-10 04:37:18

  Why 102 years for Alibaba

In many occasions, Alibaba Group Founder Jack Ma expresses the idea that he wanted Alibaba to be live for 102 years(a strange number). But why 102 years, but not 100 years or some other years?  In an interview conducted by Stanford University, the interviewer, Yahoo Founder Jerry Yang, asked this question why Jack Ma wanted Alibaba to live 102 years. Jack Ma gave his answer to this question. "In China, everybody wanted to make a company last over 100 years. This becomes a slogan, nobody ta...

   JACK MA,ALIBABA,STANFORD UNIVERSITY,JERRY YANG     2016-02-24 09:46:47

  Algorithm : Delete middle node from singly linked list

Questions about singly linked list are frequently asked during technical interviews. Today we will share with you one algorithm question about singly linked list. Here is the problem description. Assuming the only information you are giving is there is a pointer to a middle node of a singly linked list, no other information about the linked list is given. Please delete this node and don't affect the structure of the linked list. Initially you may think this question is easy if you know the hea...

   ALGORITHM,C,LINKED LIST     2015-10-30 05:21:25

  A crazy interview experience

How to be outstanding and get the offer after a job interview? Besides the strong technical background, we may still need some other skills such as how to ask questions during interview. Sometimes you may even do some crazy things. There is one question on Quora which is "What's the craziest thing you ever said (or did) at an interview and still got the job?". Among the answers, one answer is worth to be mentioned, the answer is from Stan Hanks and his answer is liked by 3859 people(As this arti...

   Quora,Interview,Strategy     2013-05-08 05:53:54

  How deep should unit test go?

There is a question on Stackoverflow which says "How deep are your unit tests?". It is asked by a guy named John Nolan. The question is not too new, but what catches me is the Best Answer given by Kent Beck, who is the creator of Extreme programming(XP) and Test Driven Development(TDD). Let's look at the question first. The thing I've found about TDD is that its takes time to get your tests set up and being naturally lazy I always want to write as little code as possible. The first thing I seem ...

   Unit test,TDD,XP     2012-09-03 10:11:27

  PHP Query String

Query string plays important role in building web applications, especially if you want to make nice urls without question mark and many key, value pairs, actually it is not so easy to design application with nice urls however it is always worth doing so, because it not only looks very proffessional, such URLs are search engine friendly, which means that they will get indexed faster but also it happens that search engines have problems with indexing pages with more then 3 key=value pairs in query...

   PHP,Query string,Request,Security     2011-10-01 02:23:15

  How to ask questions as an interviewee

Many people think that interview is a single side selection, in fact, interview is a two sides selection process. Not only the company selects you, but also you select the company. Interview provides a chance for both the company and you to know about each other. While the company is assessing you, you should also assess the company. The interviewers also know this, so they have the mental preparation and look forward to your questions and they are prepared to answer your questions. So do not w...

   Interview,Question,Interviewee     2012-09-02 08:24:51

  Collection Of Puzzles For Programmers

Did you know that we have a nice collection of puzzles here on less than dot? Some are harder than others so there is something for everyone. You can pic any language you want, you will see that there are solutions in Ruby, Python, Visual Basic, SQL, JavaScript, C++ and other. Here is a partial list of what we have Friday the Thirteenths The goal is to identify all friday the thirteenths for a given timeframe Regular Pentagon Given a grid co-ordinate (x,y) as the centre point of a regu...

   Programming puzzle,Fibonacci,Prime,ASCII     2012-01-04 08:06:18

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