AP计算机教程10-6：困难多选题

Given the following method declaration, this method will return true if and only if:

public static boolean check(String s)
{
   return s.length() >= 2 &&
          (s.charAt(0) == s.charAt(1) ||
           check(s.substring(1)));
}

Given the following method declaration, what will redo(82, 3) return?

public static int redo(int i, int j)
{
   if (i==0)
      return 0;
   else
      return redo(i/j, j)+1;
}