Find the N-th character.cpp

class Solution 
{
  public:
    char nthCharacter(string s, int r, int n) 
    {
        while(r--) 
        {
            string temp;
            for(int i = 0; i <= n; i++) 
            {
                if(s[i] == '1')
                    temp += "10";
                else
                    temp += "01";
            }
            
            s = temp;
        }
        
        return s[n];
    }
};