R: Reverse a Vector's Elements

rev {base}

R Documentation

Reverse a Vector's Elements

rev provides a reversed version of its argument. It can be used in combination with sort to obtain vectors sorted into descending order.

rev(x)

x <- c(1:5,5:3)
# sort into descending order
rev(sort(x))
all(rev(1:7) == 7:1)#- don't need `rev' here