java - n!乘阶之和的计算 ,1!+2!+...+20!
作者:互联网
public static void main(String[] args) { // 1!+2!+...+20! long sum = 0; for (int i = 1; i <= 20; i++) { int cursum = 1; for (int j = 1; j <= i; j++) { cursum *= j; } sum += cursum; } System.out.println("共"+sum); }
标签:+...+,20,String,int,void,乘阶之,main 来源: https://www.cnblogs.com/c2g5201314/p/15962850.html