Mettl Coding Fundamentals and Logic 3

Question 1

What is the output of: print(3 ** 2 % 5)?

Accepted Answer

4

Answer

3**2 = 9, and 9 % 5 = 4.

Question 2

Which Boolean expression is equivalent to NOT (A OR B)?

Accepted Answer

NOT A AND NOT B

Answer

By De Morgan's Law, NOT(A OR B) = NOT A AND NOT B.

Question 3

What is the worst-case space complexity of a recursive function that calls itself n times?

Accepted Answer

O(n)

Answer

Each recursive call adds a frame to the call stack, consuming O(n) space in the worst case.

Question 4

A function takes an array and reverses it in-place. What is the minimum number of swaps needed to reverse an array of length 6?

Accepted Answer

3

Answer

Reversing an array of length n requires ⌊n/2⌋ swaps; for n=6 that is 3.

Question 5

Which of the following is NOT a characteristic of object-oriented programming?

Accepted Answer

Pointer arithmetic

Answer

Pointer arithmetic is a low-level procedural concept, not a pillar of OOP.

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