题解 | #数列求和#
数列求和
http://www.nowcoder.com/practice/6893484c04c24bfca1f606b1823a468d
public class Main {
public static void main(String[] args) {
//write your code here........
long sum=0;
long Firstshu=9;
for(int i=1;i<=10;i++)
{
sum=sum+Firstshu;
Firstshu=Firstshu*10+9;
}
System.out.println(sum);
}
}