Questions d'entretiens - Intern

An abstract class is one whose main purpose is to define a common interface for its subclasses. An abstract class will defer some or all of its implementation to operations defined in subclasses; hence an abstract class cannot be instantiated Whereas an Interface you have to understand what do you mean by object type. An object's class defines how the object is implemented. The class defines the object's internal state and the implementation of its operations. In contrast, an object's type only refers to its interface—the set of requests to which it can respond

an abstract class can have a method body whereas an interface cannot

Do you received an email saying that you were rejected for the position?

Did you receive an email saying that you were rejected for the position?

use a queue - event based

use fork when ever new client comes, and make child process serve the client.

Variables that have only one copy per class are known as static variables. They are not attached to a particular instance of a class but rather belong to a class as a whole. They are declared by using the static keyword as a modifier. For example: static type varIdentifier; where, the name of the variable is varIdentifier and its data type is specified by type. Static variables that are not explicitly initialized in the code are automatically initialized with a default value. The default value depends on the data type of the variables.

Specifically, in C, the keyword static has a couple of different meanings: -When used with a global variable, it limits the scope of that variable to the module/file level. Although it is globally available within the module, the variable cannot be accessed from other files/modules with the extern keyword. - When used with a variable within a function, it declares a variable that is initialized at most once. All subsequent accesses to the variable (even through multiple calls of the function) will share a single location in memory, and its value will persist. - When used with a function declaration, it declares the scope of that function to be limited to that module -- this can help prevent function name collisions across multiple linked modules.

Don't waste your time.

$20.00 (usd) would be nice

In Java: String reverseWords(String s){ String[] parts = s.split(" "); // split the string to words String temps; int begin = 0; int end = parts.length -1; while(begin < end){ // reverse the string temp = parts[begin]; parts[begin] = parts[end]; parts[end] = temp; } StringBuilder strBuilder = new StringBuilder(); // rebuild the string for (int i = 0; i < parts.length; i++) { strBuilder.append(parts[i]); } return strBuilder.toString(); }

String reverseWords(“Hello World”)

Bit manipulation

Recursion. Manipulate only one of the two integers, let’s say y. If y is 0 then return 0. If y is greater than 0, call the same function with y-1 and return the sum of its result and x. Do not forget the case where y is negative (call the function with -y, and return the opposite)