小编Mad*_*ela的帖子

我写了下面的代码来找出丢失的序列,但我收到错误,因为我提到这是我的代码

public partial class Missing : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
    List<int> daysOfMonth =
       new List<int>() { 6, 2, 4, 1, 9, 7, 3, 10, 15, 19, 11, 18, 13, 22, 24, 20, 27, 31, 25, 28 };
    Response.Write("List of days:");
    foreach (var num in daysOfMonth)
    {
        Response.Write(num);
    }
    Response.Write("\n\nMissing days are: ");
    // Calling the Extension Method in the List of type int 
    foreach (var number in daysOfMonth.FindMissing()){Response.Write(number);}
}
public static IEnumerable<int> FindMissing(this List<int> list) …