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