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recursion 5

# recursion 5 - Recursion Recursion 1 Top Down Problem...

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Recursion 1 Recursion

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Recursion 2 Top Down Problem Solving Many problems become much more manageable to solve when they have been broken down into smaller problems. This technique has a few names: top down problem solving divide and conquer The problem is divided using stepwise refinement. For certain problems, each stepwise refinement is actually an instance of the bigger problem using a smaller input set. These problems have a recursive solution.
Recursion 3 Recursion Any function that is implemented by calling itself is called a recursive function. Consider the following crude implementation of factorial: int factorial(int value) { int ret = 1; if (value > 1) ret = value * factorial(value -1); return ret; }

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Recursion 4 When to Use Recursion Problems having the following characteristics lend themselves to recursion: One or more simple cases of the problem have a straightforward, non-recursive solution called the base case .
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