请问一下，这样的递归写法可以吗？ class Solution { public: double Power(double base, int exponent) { int e = exponent; if (e < 0) { e = -e; base = 1 / base; } if (e == 1) { return base; } else if (e == 0) { return 1; } if (e & 1) { return base * Power(base * base, e >> 1); } else { return Power(base * base, e >> 1); } } };