344_Reverse_String.cpp

class Solution {
public:
    string reverseString(string s) {
        int l=s.size();
        if(l==0)
            return s;
        string out=s;
        
        for (int i=l-1;i>=0;i--){
            out[l-1-i]=s[i];
        }
        return out;
    }
};