Question

计算s=1+(1+2)+(1+2+3)+…+(1+2+3+4+5+…+100)最好用java

Answer 1

//用Java编写一个程序，计算s=1+(1+2)+(1+2+3)+…+(1+2+3+4+5+…+100)。
public class Sum
{
public static void main(String[] args)
{
int sum1 = 0;
int sum = 0;
for (int i = 1; i <= 100; i++)
{
sum1 += i;
sum += sum1;
}
System.out.println(sum);
}