dp problem, refer to dp from AFI

On Sat, Aug 13, 2011 at 9:01 PM, Decipher <[email protected]> wrote:

> There is a river and there are n number of steps between two banks of the
> river to cross the river.
>
> A frog wants to cross the river with the condition that he can jump max one
> step. Find the number of ways he can cross the river?
>
>
> For e.g. if there are 3 steps in between, frog can go from paths: _123_,
> _2_, _13_ so there are 3 different ways frog can cross the river (in the
> example _ is two ends of the river)
>
>
> Can this question be done using Dynamic Programming ? If yes, please tell
> how .
>
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