Question

用java编写程序，计算数学常数e的值:e=1+1/1+1/2+1/3+1/4……

Answer 1

Answer 2

public class CalculateE {
public static int jisuanjiechen(int n) {
int chengji=1;
for(int i=n;i>=1;i--)
chengji=chengji*i;
return chengji;
}
public static void main(String[] args) {
double sume=1.0;
for(int n=1;1.0/jisuanjiechen(n)>0.0001;n++)
sume=sume+1.0/jisuanjiechen(n);
System.out.println(sume);
}
}