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