Graduate Engineer Trainee

The naïve approach for this question is to run a loop from the start to the end number. And for each number, check if it is prime or not. If the number is prime, we print it otherwise skip it.
One optimization to this approach would be to skip all even numbers (except 2 if present in interval) since even numbers are not prime.
Function to check if a number is prime or not :
isPrime(n):
if (n <= 1) return false
for (i=2; i if (n%i == 0)
return false
}
return true

This can be done by iterative swapping using two pointers. The first pointer points to the beginning of the string, whereas the second pointer points to the end. Both pointers keep swapping their elements and go towards each other. Essentially, the algorithm simulates the rotation of a string with respect to its midpoint.
Time Complexity : O(n)

The word polymorphism means having many forms. In simple words, we can define polymorphism as the ability of a message to be displayed in more than one form. This is called polymorphism. Polymorphism is considered as one of the important features of Object Oriented Programming.
Polymorphism is of two types :
1. Compile Time Polymorphism : 
Invokes the overloaded functions by matching the number and type of arguments. The information is present during compile-time. This means the C++ compiler will select the right function at compile time. It is achieved through function overloading and operator overloading.
2. Run Time Polymorphism : 
This happens when an object’s method is called during runtime rather than during compile time. Runtime polymorphism is achieved through function overriding. The function to be called is established during runtime.

The below syntax can be used for querying for all students with greater marks than the average of the class:

Syntax:
SELECT column1 FROM table_name
WHERE column2 > (SELECT AVG(column2) 
FROM table_name);

Now use the above syntax to make the query on our students table as shown below:
SELECT Name FROM Students WHERE TotalMarks > (SELECT AVG(TotalMarks) FROM Studen

This feature is present in most of the Object Oriented Languages such as C++ and Java. But C doesn’t support this feature not because of OOP, but rather because the compiler doesn’t support it (except you can use _Generic).

Yes, it's called function overloading. Multiple functions are able to have the same name if you like, however MUST have different parameters.
void func(int a, int b) { }
void func(float a, int b) { }
void func(int a, int b, int c) { }

Tip 1 : The cross questioning can go intense some time, think before you speak.

Tip 2 : Be open minded and answer whatever you are thinking, in these rounds I feel it is important to have opinion.

Tip 3 : Context of questions can be switched, pay attention to the details. It is okay to ask questions in these round, like what are the projects currently the company is investing, which team you are mentoring. How all is the work environment etc.