Palindrome String

#include <iostream>
#include<string.h>
#include<string>
using namespace std;

bool Check(string str,int s,int length)
{
    if(length < s) return true;
    if(str[s] == str[length-1]) return Check(str,s+1,length-1);

    return false;
}
int main() {
    //code
    int t;
    cin>>t;
    while(t--)
    {
        int dodai;
        cin>>dodai;
        string str;
        cin>>str;
        Check(str,0,dodai) ? cout<<"Yes\n": cout<<"No\n";
    }
    return 0;
}