cut a vector in equal parts

Hi,

I would like to cut a vector of values in parts.
Each part should have an equal number of elements.

for example:

x <- (rnorm(500)^2)

now I want 5 vectors each with 100 elements.
The first vector should include the 100 lowest values of x and so on
(so that the fifth vector contains the 100 highest values of x).


thanks for any help!