将List <List <int >>转换为double [] []

Question

有没有办法转换List<List<int>>为double[][]使用LINQ？

我已经想出如何从中走出来List<List<int>>,int[][]但我仍然坚持演员阵容.这是我到目前为止:

List<List<int>> ints = new List<List<int>>()
{
    new List<int>(){0, 1, 2},
    new List<int>(){0, 1, 2},
    new List<int>(){0, 1, 2},
};

// int[][]
ints.Select(x => x.ToArray()).ToArray();

Answer 1

double[][] doubles = ints.Select(x => x.Select(y => (double)y).ToArray())
                         .ToArray();