//时间区间：2018-02-01~2018-02-07

//待排除时间区间集合：2018-02-03~2018-02-04,2018-02-06~2018-02-06   

public class myclass

{

    public DateTime BeginDate { get; set; }

    public DateTime EndDate { get; set; }

    public List<myclass> SpCalc(List<myclass> list)

    {

        int Cnt = (EndDate - BeginDate).Days + ;

        bool[] _temp = new bool[Cnt];

        Action<int, int, bool> _calc = (bIndex, eIndex, v) =>

            {

                for (int i = bIndex; i <= eIndex; i++)

                {

                    _temp[i] = v;

                }

            };

        //初始化，全部置为true

        _calc(, Cnt, true);

        //需要排除的时间段全部置为false

        list.ForEach(q => _calc((q.BeginDate - BeginDate).Days, (q.EndDate - BeginDate).Days, false));

        var resList = new List<myclass>();

        //遍历获取有效时间段

        int index = , start = -;

        while (index < Cnt)

        {

            if (_temp[index])

            {

                if (start == -)

                    start = index;

                if (index == )

                    resList.Add(new myclass()

                    {

                        BeginDate = BeginDate.AddDays(start),

                        EndDate = BeginDate.AddDays(index)

                    });

            }

            else

            {

                if (start != -)

                    resList.Add(new my()

                    {

                        BeginDate = BeginDate.AddDays(start),

                        EndDate = BeginDate.AddDays(index - )

                    });

                start = -;

            }

            index++;

        }

        return resList;

    }

}