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........
//注意int的取值范围是-2^31——2^31-1,也就是-2147483648——2147483647
long value = 0l;
long j = 9l;
for(int i = 0;i <= 9;i++){
value = j + value;
j = j*10 + 9;
}
System.out.print(value);
}
}
