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

public class Solution {    public double Power(double num, int n) {        double s=1,tmp=n;        if(n<0) n=-1*n;        //if(n==1) return s;        for(int i=1;i<=n;i++){        s*=num;            }        if(tmp>=0) return s;        return 1.0/s;  }}