获取所有独特的变化
这是我拥有的课程：
public class Schedule
{
public string mintime { get; set; }
public string maxtime { get; set; }
public string weekday { get; set; }
}
我得到了这样的时间表的列表，重复周日如
List<Schedule> list = new List<Schedule> {
new Schedule { mintime = "01.01.2012", maxtime = "05.01.2012", weekday = "1" },
new Schedule { mintime = "05.01.2012", maxtime = "10.01.2012", weekday = "1" },
new Schedule { mintime = "10.01.2012", maxtime = "20.01.2012", weekday = "2" },
new Schedule { mintime = "01.02.2012", maxtime = "10.02.2012", weekday = "2" },
new Schedule { mintime = "01.03.2012", maxtime = "10.03.2012", weekday = "3" },
new Schedule { mintime = "01.04.2012", maxtime = "10.04.2012", weekday = "4" }
};
我如何获得列表>与所有组合，如：
List<List<Schedule>> list = new List<List<Schedule>> {
new List<Schedule> {
new Schedule { mintime = "01.01.2012", maxtime = "05.01.2012", weekday = "1" },
new Schedule { mintime = "10.01.2012", maxtime = "20.01.2012", weekday = "2" },
new Schedule { mintime = "01.03.2012", maxtime = "10.03.2012", weekday = "3" },
new Schedule { mintime = "01.04.2012", maxtime = "10.04.2012", weekday = "4" }
},
new List<Schedule> {
new Schedule { mintime = "01.01.2012", maxtime = "05.01.2012", weekday = "1" },
new Schedule { mintime = "01.02.2012", maxtime = "10.02.2012", weekday = "2" },
new Schedule { mintime = "01.03.2012", maxtime = "10.03.2012", weekday = "3" },
new Schedule { mintime = "01.04.2012", maxtime = "10.04.2012", weekday = "4" }
},
new List<Schedule> {
new Schedule { mintime = "05.01.2012", maxtime = "10.01.2012", weekday = "1" },
new Schedule { mintime = "10.01.2012", maxtime = "20.01.2012", weekday = "2" },
new Schedule { mintime = "01.03.2012", maxtime = "10.03.2012", weekday = "3" },
new Schedule { mintime = "01.04.2012", maxtime = "10.04.2012", weekday = "4" }
},
new List<Schedule> {
new Schedule { mintime = "05.01.2012", maxtime = "10.01.2012", weekday = "1" },
new Schedule { mintime = "01.02.2012", maxtime = "10.02.2012", weekday = "2" },
new Schedule { mintime = "01.03.2012", maxtime = "10.03.2012", weekday = "3" },
new Schedule { mintime = "01.04.2012", maxtime = "10.04.2012", weekday = "4" }
},
};
？
是否有可能使用LINQ获得它？
我的问题的主要议题是建立时间表清单。 每个时间表应包括星期一，星期二，星期三，星期四，星期五，星期六和星期日一次。 我需要使用一个更常见的列表来创建这样的列表，其中包含许多关于星期一，星期三等的时间表。
在这里使用Eric Lippert的CartesianProduct
List<List<Schedule>> newList = CartesianProduct(list.GroupBy(l => l.weekday))
.Select(x => x.ToList())
.ToList();
-
public static IEnumerable<IEnumerable<T>> CartesianProduct<T>(IEnumerable<IEnumerable<T>> sequences)
{
IEnumerable<IEnumerable<T>> emptyProduct = new[] { Enumerable.Empty<T>() };
return sequences.Aggregate(
emptyProduct,
(accumulator, sequence) =>
from accseq in accumulator
from item in sequence
select accseq.Concat(new[] { item }));
}