在Java中,求1!+2!+3!+···+1000!的结果,结果长度远远超出int和long类型的最大值,所以要使用BigDecimal类型,代码如下:
1 BigDecimal count = new BigDecimal(0);
2 for (int i = 1; i <= 1000; i++) {
3 BigDecimal mutil = new BigDecimal(1);
4 for (int j = 1; j <= i; j++) {
5 mutil = mutil.multiply(new BigDecimal(j));
6 }
7 count = count.add(mutil);
8 }
9 System.out.println("值:" + count.toString());