[Haskell-cafe] what do I have to do exactlry with this exercises
Roelof Wobben
r.wobben at home.nl
Fri Oct 30 06:20:46 UTC 2015
Hello,
Im self studing Haskell with the Craft o ffunctional programmimg of Hutton.
Now I see two exercises that I do not understand what is really the
purpose here.
The two exercises are :
4.21 Given a function f of type Integer -> Integer give a recursive
definition of a
function of type Integer -> Integer which on input n returns the maximum
of the values f 0, f 1, ..., f n. You might find the max function
defined in
Section 3.4 useful.
To test this function, add to your script a definition of some values of
f thus:
f 0 = 0
f 1 = 44
f 2 = 17
f _ = 0
and so on; then test your function at various values.
4.22 Given a function f of type Integer -> Integer give a recursive
definition of
a function of type Integer -> Bool which on input n returns True if one or
more of the values f 0, f 1, ..., f n is zero and False otherwise.
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