Powershell break a long array into a array of array with length of N in one line?

Question

For example, given a list 1,2,3,4,5,6,7,8,1,2,3,4,5,6,7,8 and a number 4, it returns a list of list with length of 4, that is (1, 2, 3, 4), (5, 6, 7, 8),

Answer 1

PS> $a = 1..16
PS> $z=for($i=0; $i -lt $a.length; $i+=4){ ,($a[$i]..$a[$i+3])}
PS> $z.count
4    

PS> $z[0]
1
2
3
4

PS> $z[1]
5
6
7
8

PS> $z[2]
9
10
11
12

PS> $z[3]
13
14
15
16