Let A = {0, 1, 2} and let S be the set of all strings over A. Define a relation L from S to nonneg as follows: For every string s in S and every nonnegative integer n,
(s,n)∈L means that the length of s is n.
Then L is a function because every string in S has one and only one length. Find L(0201) and L(12).
