用Java语言中的循环求阶乘和

Question

用Java求1+3/2！+5/3！+7/4！+9/5！

Answer 1

public class 循环求阶乘 {

	public static void main(String[] args) {
		
		double result = 1;
		int d = 1;
		for(int i = 2;i<=5;i++) {
			d = 1;
            //求i的阶乘
			for(int j = 1;j<=i;j++) {
				d = d*j;
			}
			result += (i*2-1)/d;
		}
		System.out.println("result="+result);
	}

}