题目描述
blablabla
样例
class Solution {
public double Power(double m, int n) {
double res=1.0;
if(m==0)return 0;
if(n==0)return 1;
else {
for(int i=1;i<=Math.abs(n);i++){
res*=m;
}
}
return n>0?res:1.0/res;
}
}