摘要：
1 class City 2 { 3 public string CityName { get; set; } 4 5 public int Start { get; set; } 6 7 public int End { get; set; } 8 9 public bool IsCurrentCity(int num)10 {11 return (num >= Start && num <= End);12 }13 }14 15 class CityHelper16 {17 List<City> cityList... 阅读全文