Use constructive and well-formed examples, like Quicksort, to teach recursion so that students have a strong model for building their own solutions.

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  • The following topics are great because they provide efficient and appropriate uses of recursion:
    • Quicksort;
    • Printing values in a singly-linked list in reverse order;
    • Tree traversals.
  • You can also demonstrate how tail recursion is extremely efficient with certain compilers or interpreters (e.g., Scheme).
    • As an example, use tail recursion to sum values in a list of numbers.

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Interview with Henry Walker.

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