标签:ret self int span pow tee except class amp
public class Solution { public double Power(double base, int exponent) { if(base==0.0 && exponent <0){ throw new RuntimeException("invalid input"); } int absoluteExponent = exponent; if(exponent <0 ){ absoluteExponent = -exponent; } double tmpResult = selfPower(base,absoluteExponent); if(exponent < 0 ){ return 1/tmpResult; } return tmpResult; } double selfPower(double base,int exponent){ double tmpResult = 1.0; for(int i = 0;i<exponent;i++){ tmpResult = tmpResult*base; } return tmpResult; } }
主要是考虑base为0,指数为负数的特殊情况
标签:ret self int span pow tee except class amp
原文地址:https://www.cnblogs.com/qihongfeiblog/p/11917054.html