题解 | #数值的整数次方#

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