Lecture 4

Specifically if factorial calls itself then there are

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Unformatted text preview: elf. Specifically, if “factorial” calls itself, then there are two parameters “n” that have NOTHING to do with each other. 7 factorial(3): factorial(2): factorial(1): factorial(0): n = 3 calls factorial(2) n = 2 calls factorial(1) n = 1 calls factorial(0) returns 1 to factorial(1). Inside factorial(1), 1 * factorial(0) becomes: 1*1 factorial(1): returns 1 to factorial(2), Inside factorial(2), 2 * factorial(1) becomes: 2*1 8 factorial(2) returns 2 to factorial(3). Inside factorial(3), 3 * factorial(2) becomes: 3*2 A problem can be solved recursively if the following conditions are fulfilled: So, inside factorial(3), the return value is 3 * 2 = 6. This is what will be returned to the program. 1 - The problem can be decomposed into several problems such that (at least) one of them is of the “same kind” as the initial problem but “simpler” and all the others are “easy” cout << factorial...
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This document was uploaded on 03/31/2014 for the course CS 114 at NJIT.

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