returning quartiles of a list?

Hi, all.  I have a list:

process <- c( 5 , 7 , 4 , 1 , 4 , 1)

and I'd like to get each half (or each third or each quartile) of the list:

n<-length(process)
process[1:(n/2)]
process[(n/2):1]
process[(n/4):(n/2)]
etc, etc,


	-thomas


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