这道题很简单，只需要对指数进行分情况讨论即可。
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| class Solution {
public:
double Power(double base, int exponent) {
if(exponent==0) return 1;
else if(exponent>0) return getResult(base,exponent);
else return 1/getResult(base,-exponent);
}
double getResult(double base,int exp){
double result=1;
for(int i=0;i<exp;i++) result*=base;
return result;
}
};
|