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Adding to the End of a List

Desired behavior: 
          (add-to-end '(5 4 3 2) 1) ⇒ (5 4 3 2 1)
Q: Adding element elt to the empty list produces what list?

A: (elt)

Q: How do you add elt to the end of a nonempty list?
(Hint: Answer recursively in terms of the head and tail.)

A:

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