Download Coding Interviews: Questions, Analysis & Solutions by Harry He PDF

By Harry He

This ebook is ready coding interview questions from software program and web businesses. It covers 5 key components which make sure functionality of applicants: (1) the fundamentals of programming languages, info constructions and algorithms, (2) ways to writing code with prime quality, (3) how to clear up tough difficulties, (4) ways to optimize code, (5) delicate talents required in interviews. the fundamentals of languages, algorithms and knowledge buildings are mentioned in addition to questions that discover the way to write strong recommendations after breaking down difficulties into practicable items. it is also examples to target modeling and artistic challenge solving.

Interview questions from the preferred businesses within the IT are taken as examples to demonstrate the 5 elements above. in addition to ideas, it includes designated research, how interviewers assessment strategies, in addition to why they prefer or dislike them. the writer makes shrewdpermanent use of the truth that interviewees could have constrained time to software significant strategies which in flip, limits the choices an interviewer has. So the writer covers these bases.

Readers will enhance their interview functionality after studying this ebook. it will likely be necessary for them even when they get bargains, simply because its issues, comparable to techniques to reading tricky difficulties, writing strong code and optimizing, are all crucial for high-performing coders.

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Additional resources for Coding Interviews: Questions, Analysis & Solutions

Example text

Additionally, final arguments, which are declared in argument lists of methods, are similar to final variables. The use for final variables gets more complex when they are references. If a final variable is a reference, it cannot be rebound to reference another object. However, the object it references is still mutable. The piece of code in Listing 2-18 uses final variables. Which methods will cause compile-time errors? Listing 2-18. length; ++i) array[i] = i; } } In the class WithFinal, there are two data fields.

If an exception is thrown while reallocating memory due to insufficient memory, m_pData is a NULL pointer and it is prone to crash the whole application. In other words, when an exception is thrown in the assignment operator function, the status of a CMyString instance is invalid. It breaks the requirement of exception safety: If an exception is thrown, everything in the program must remain in a valid state. Two approaches are available to achieve the goal of exception safety. The first one is to allocate memory with the new operator before deleting.

WriteLine(text); } } class B{ static A a1 = new A("a1"); A a2 = new A("a2"); 22 CHAPTER 2 ■ PROGRAMMING LANGUAGES static B() { a1 = new A("a3"); } public B() { a2 = new A("a4"); } } class Program { static void Main(string[] args) { B b = new B(); } } Before any code of the type B gets executed, its static constructor will be invoked first. It initializes static data fields and then executes statements inside the static constructor. Therefore, it prints a line of “a1”, and then another line of “a3”.

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