Hugs question

[Hannah Schroeter]

Hello!

On Tue, Mar 20, 2001 at 05:13:12PM +0800, Swee Guan wrote:
> I was suppose to find a function mid3 that takes three integers and returns the middle one in terms of size but i cant seem to get it.
> maybe you can help

> mid3 :: Int -> Int -> Int -> Int
> -- mid3 takes three integers and 
> -- returns the middle one in terms of size
> mid3 x y z = min2 x (max2 y z)

> please send to swigs01@hotmail.com

This is plain wrong.

1st, min2 and max2 aren't defined (use min and max from the prelude).
2nd, then, mid3 1 2 3 = min 1 (max 2 3) = min 1 3 = 1, instead
of 2. A simple implementation could be:

import List(sort)
mid3 x y z = (sort [x,y,z]) !! 1

Kind regards,

Hannah.