给定一个double类型的浮点数base和int类型的整数exponent。求base的exponent次方

public double Power(double base, int exponent) { double r = 1.0; double s = 1.0; if (exponent > 0) { for (int i = 1; i <= exponent; i++) { r *= base; } } else if (exponent < 0) {

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