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Held: Wednesday, 14 October 2009
Summary: We consider a different form of recursion, one based on the construction of recursive helpers that take additional parameters. Along the way, we consider the idea of tail recursion. We also explore how careless design of recursive procedures can inadvertently lead to slow execution.
tail recursion) adds an extra parameter to the recursive procedure
partial-sum unexplored-elements 0 (2 3 5 7 11 13) 2 (3 5 7 11 13) 5 (5 7 11 13) 8 (7 11 13) 15 (11 13) 26 (13) 39 ()
tailof the procedure), then we say that the procedure is tail recursive.
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