JZ12 数值的整数次方

题目描述

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。

保证base和exponent不同时为0

public class Solution {
    public double Power(double base, int exponent) {
        if (exponent < 0) {
            base =1/base;
            exponent = -exponent;
        }
        double result = 1;
        if (exponent > 0) {
            for (int i = 0; i < exponent; i++) {
                result *= base;
            }
        }
        return result;
    }
}

public class Solution {
    public double Power(double base, int exponent) {
        return Math.pow(base,exponent);
  }
}