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  1. using System;
  2. using System.Linq;
  3. using System.Collections.Generic;
  4.  
  5. public class Test
  6. {
  7.     class LockedDate
  8.     {
  9.         public bool IsYearly;
  10.         public DateTime Date;
  11.     }
  12.  
  13.     static List<DateTime> GetDateRange(List<LockedDate> source, DateTime start, DateTime end)
  14.     {
  15.         if (start > end)
  16.             throw new ArgumentException("Start must be before end");
  17.  
  18.         var ts = end - start;
  19.         var dates = Enumerable.Range(0, ts.Days)
  20.             .Select(i => start.AddDays(i))
  21.             .Where(d => source.Any(ld => ld.Date == d
  22.                 || (ld.IsYearly && ld.Date.Month == d.Month && ld.Date.Day == d.Day)));
  23.         return dates.ToList();
  24.     }
  25.  
  26. 	public static void Main()
  27. 	{
  28. 		    DateTime start = new DateTime(2013, 01, 22);
  29.             DateTime end = new DateTime(2015, 02, 23);
  30.             var lockDates = new List<LockedDate> { 
  31.                 new LockedDate { Date = new DateTime(2013, 12, 25), IsYearly = true } ,
  32.                 new LockedDate { Date = new DateTime(2011, 12, 02), IsYearly = false } ,
  33.                 new LockedDate { Date = new DateTime(2013, 03, 25), IsYearly = false } 
  34.             };
  35.             var range = GetDateRange(lockDates, start, end);
  36.             foreach(DateTime dt in range)
  37.             Console.WriteLine(dt.ToString("dddd, MMMM dd, yyyy"));
  38. 	}
  39. }
Success #stdin #stdout 0.04s 33992KB
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Monday, March 25, 2013
Wednesday, December 25, 2013
Thursday, December 25, 2014
https://ideone.com/3KFi97
language:
C# (gmcs 5.20.1)
created:
11 years ago
visibility:
public

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