2810. Faulty Keyboard

Your laptop keyboard is faulty, and whenever you type a character 'i' on it, it reverses the string that you have written. Typing other characters works as expected.

You are given a 0-indexed string s, and you type each character of s using your faulty keyboard.

Return the final string that will be present on your laptop screen.

class Solution {
public:
    string finalString(string s) {
        string res = "";
        for(auto& ch : s) {
            if(ch == 'i') {
                reverse(begin(res), end(res));
            } else res.push_back(ch);
        }
        return res;
    }
};