Reverse the Order of a Vector or List

DESCRIPTION:

Returns an object with the same length as x but with the elements or components in the reverse order.

USAGE:

rev(x) 

REQUIRED ARGUMENTS:

x
an object with length, usually a vector or a bdVector. Missing values (NA) are allowed.

VALUE:

object like x but with the order reversed (the last value in x is the first value in the result).

SEE ALSO:

, , , .

EXAMPLES:

rev(sort(y))    # sort y in descending order 
rev(list(a=1:2, b=5:6)) # same as list(b=5:6, a=1:2)