Given a string s consisting only of the characters 'a' and 'b', return true if every 'a' appears before every 'b' in the string. Otherwise, return false.

Constraints:

• $1 \leq$ s.length $\leq 100$

• s[i] is either 'a' or 'b'

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.