Mettl Fundamental Coding Skills 3

Question 1

Which keyword is used to exit a loop prematurely in most languages?

Accepted Answer

break

Answer

The `break` statement immediately terminates the innermost enclosing loop.

Question 2

What is a recursive function?

Accepted Answer

A function that calls itself

Answer

A recursive function is one that calls itself, usually with a smaller input, until reaching a base case.

Question 3

Which of the following is NOT a primitive data type in Java?

Accepted Answer

String

Answer

String is an object (reference type) in Java, while int, boolean, and double are primitive types.

Question 4

What does `&&` represent in most C-style programming languages?

Accepted Answer

Logical AND

Answer

`&&` is the logical AND operator, returning true only when both operands are true.

Question 5

Which sorting algorithm has an average time complexity of O(n log n)?

Accepted Answer

Merge Sort

Answer

Merge Sort consistently achieves O(n log n) average and worst-case time complexity by dividing and merging.

Mettl Practice Test