Given an integer n, insert a dot ('.') as a thousand separator between every group of $3$ digits starting from the right, and return the resulting value as a string.

Constraints:

• $0 \leq$ n $\leq 2^{31} - 1$

Now, let’s take a moment to make sure you’ve correctly understood the problem. The quiz below helps you check if you’re solving the correct problem:

We have a game for you to play. Rearrange the logical building blocks to develop a clearer understanding of how to solve this problem.

Implement your solution in the following coding playground.