integer power of numbers
Question:
Given a float base of type double and an integer exponent of type int. Find the exponent power of base. Make sure that base and exponent are not 0 at the same time.
Code:
package com.hlq.test;
/**
* @author helongqiang
* @date 2020/5/14 21:30
*/
/**
* 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 (base == 0.0){
return 0.0;
}
double result = 1.0d;
int e = exponent > 0 ? exponent : -exponent;
for(int i=1;i<=e;i++){
result *= base;
}
return exponent > 0 ? result : 1/result;
}
}