You are given a string s consisting of lowercase English letters and special characters *, #, and %.

Process the characters of s sequentially from left to right to build a result string, starting with an empty string:

• If the character is a lowercase English letter, append it to the end of the result string.

• If the character is *, remove the last character from the result string.

• If the character is #, duplicate the entire current result string.

• If the character is %, reverse the entire current result string.

Return the final string after processing all characters in s.

Constraints:

• $1 \leq$ s.length $\leq 20$

• s consists only of lowercase English letters and the characters *, #, and %.

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.