is.unsorted(x, na.rm = FALSE, strictly = FALSE)
NA
except for atomic vectors and
objects with an S3 class (where the >=
or >
method is
used to compare x[i]
with x[i-1]
for i
in
2:length(x)
) or with an S4 class where you have to provide a
method for is.unsorted()
.
sort
, order
.