Selects a random subsequence Subseq of List, with Complement
containing all elements of List that were not selected. Each
element of List is included with equal probability in either Subseq
or
Complement.
random_subseq/3
may also be called with Subseq and Complement
bound and List unbound, which will recreate List
by randomly interleaving
Subseq and Complement. This mode may fail
randomly, matching SICStus behavior. The failure probability corresponds
to the probability of the "forward" mode selecting a Subseq/Complement
combination with different lengths.
- Compatibility
- SICStus 4
[det]random_subseq(+List,
-Subseq, -Complement)