Let S be the set of all strings of 0’s and 1’s, and define
Chapter 7, Problem 21E(choose chapter or problem)
Problem 21E
Let S be the set of all strings of 0’s and 1’s, and define l: S → Znonneg by l(s) = the length of s, for all strings s in S.
a. Is l one-to-one? Prove or give a counterexample.
b. Is l onto? Prove or give a counterexample.
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