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 max = 9999999999L;
long result = 0L;
for(long temp = 9; temp <= max; ){
result += temp;
temp = temp * 10 + 9;
}
System.out.println(result);
}
}
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