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  1. using System;
  2. using System.Collections.Generic;
  3.  
  4. class Schedule {
  5. 	public TimeSpan Begin {get;set;}
  6. 	public TimeSpan End {get;set;}
  7. }
  8. class GalaxySector {
  9. 	public TimeSpan Begin {get;set;}
  10. 	public TimeSpan End {get;set;}
  11. }
  12.  
  13. public class Test
  14. {
  15.  
  16. 	private static readonly TimeSpan HalfHour = TimeSpan.Parse("0:30");
  17.  
  18. 	private static IEnumerable<Schedule> Group(IList<GalaxySector> all) {
  19. 		// Protect from division by zero
  20. 		if (all.Count == 0) {
  21. 			yield break;
  22. 		}
  23. 		// Find initial location
  24. 		var pos = 0;
  25. 		while (pos < all.Count) {
  26. 			var prior = (pos + all.Count - 1) % all.Count;
  27. 			if (all[prior].End+HalfHour >= all[pos].Begin) {
  28. 				pos++;
  29. 			} else {
  30. 				break;
  31. 			}
  32. 		}
  33. 		pos = pos % all.Count;
  34. 		// Start grouping items together
  35. 		var stop = pos;
  36. 		do {
  37. 			var start = pos;
  38. 			var next = (pos+1) % all.Count;
  39. 			while (next != stop && all[pos].End+HalfHour >= all[next].Begin) {
  40. 				pos = next;
  41. 				next = (pos+1) % all.Count;
  42. 			}
  43. 			yield return new Schedule {Begin = all[start].Begin, End = all[pos].End};
  44. 			pos = next;
  45. 		} while (pos != stop);
  46. 	}
  47.  
  48. 	public static void Main()
  49. 	{
  50. 		var all = new GalaxySector[] {
  51. 			new GalaxySector {Begin=TimeSpan.Parse("0:15"), End=TimeSpan.Parse("2:30")}
  52. 		,   new GalaxySector {Begin=TimeSpan.Parse("2:45"), End=TimeSpan.Parse("3:30")}
  53. 		,	new GalaxySector {Begin=TimeSpan.Parse("8:00"), End=TimeSpan.Parse("9:30")}
  54. 		,	new GalaxySector {Begin=TimeSpan.Parse("10:00"), End=TimeSpan.Parse("11:00")}
  55. 		,	new GalaxySector {Begin=TimeSpan.Parse("11:20"), End=TimeSpan.Parse("12:30")}
  56. 		,	new GalaxySector {Begin=TimeSpan.Parse("14:00"), End=TimeSpan.Parse("16:00")}
  57. 		,	new GalaxySector {Begin=TimeSpan.Parse("18:30"), End=TimeSpan.Parse("19:30")}
  58. 		,	new GalaxySector {Begin=TimeSpan.Parse("19:45"), End=TimeSpan.Parse("21:00")}
  59. 		,	new GalaxySector {Begin=TimeSpan.Parse("22:00"), End=TimeSpan.Parse("23:50")}
  60. 		};
  61. 		foreach (var sched in Group(all)) {
  62. 			Console.WriteLine("{0}..{1}", sched.Begin, sched.End);
  63. 		}
  64. 	}
  65. }
Success #stdin #stdout 0.07s 24072KB
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Standard input is empty
stdout
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08:00:00..12:30:00
14:00:00..16:00:00
18:30:00..21:00:00
22:00:00..03:30:00
https://ideone.com/xzqp45
language:
C# (gmcs 5.20.1)
created:
9 years ago
visibility:
public

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