Question 1

What are the two main components of a recursive function?

Accepted Answer

A recursive function has two main components: a base case, which is the condition under which the recursion stops, and a recursive step, which is where the function calls itself with a modified input to move closer to the base case.

Question 2

What is tail recursion and why is it useful?

Accepted Answer

Tail recursion is a form of recursion where the recursive call is the very last operation in the function. It's useful because it can be optimized by compilers to avoid using extra stack space, preventing stack overflow errors for deep recursion.

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