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;
String init = "";
while(!init.equals("9999999999")) {
init += "9";
sum += Long.parseLong(init);
// System.out.print(init + " ");
}
System.out.print(sum);
}
}
