Length of a List
lThe length, or number of
elements, in a list is the number at the Òtop
levelÓ
[ [ [1, 2, 3], [2, 3] ], [ [3], [] ] ]
has length 2
[[1, 2, 3, 4],
[[1, 2], [3, 4]], [[[1, 2,
3, 4]]]]
has length 3
[ [ [1, 2, 3], [2, 3] ], [ [3], [] ] ]has length 2
[[1, 2, 3, 4],
[[1, 2], [3, 4]], [[[1, 2,
3, 4]]]]has length 3