LINQでList<T>をList<List<T>>に変換する

1
// 1~100が入ったリストを作成
2
var baseList = new List<int>();
3
baseList.AddRange(Enumerable.Range(1, 100));
4

5
//10ずつに分割
6
var separateCount = 10;
7
var itemListList = baseList.Select((v, i) => new { v, i }).GroupBy(x => x.i / separateCount).Select(g => g.Select(x => x.v).ToList()).ToList();
8

9
foreach (var itemList in itemListList)
10
{
11
  Console.WriteLine("hoge");
12
  foreach (var item in itemList)
13
  {
14
    Console.WriteLine(item);
15
  }
16
  Console.WriteLine("fuga");
17
}

1
hoge
2
1
3
2
4
3
5
4
6
5
7
6
8
7
9
8
10
9
11
10
12
fuga
13
hoge
14
11
15
12
16
13
17
14
18
15
19
16
20
17
21
18
22
19
23
20
24
fuga
25
hoge
26
21
27
22
28
...省略

1
var itemListList = baseList.OrderBy(x => Guid.NewGuid()).Select((v, i) => new { v, i }).GroupBy(x => x.i / separateCount).Select(g => g.Select(x => x.v).ToList()).ToList();