# coding=utf-8 id = 116 name = 'evenlen/1 + oddlen/1' slug = 'check if the length of a list is even or odd' description = '''\
evenlen(L)
: the list L
has an even number of elements.
oddlen(L)
: the list L
has an odd number of elements.
?- oddlen([1,2,3,4,5]). true. ?- oddlen([1,2,3,4]). false. ?- evenlen([1,2,3,4]). true.''' hint = {}