题解 | #包含数字9的数#
包含数字9的数
https://www.nowcoder.com/practice/0948f4f3344c452f843afd3585dd0f8d
public class Program {
public static void Main() {
int index = 0;
for (int i = 0; i <= 2019; i++) {
if (i.ToString().Contains("9"))
index++;
}
System.Console.WriteLine(index);
}
}
