Hi all, I've been working hard at the programming, but have come to a stand still.
Anyway, I'm having trouble with lists. This is just one of many many many questions I have, so I will keep it down to the minimum.
I have to state whether a list is true or false, based on the integers in the list.
[1;2;3;4;5;6;7;8] would come up as TRUE#
[1;2;3;4;5;6;7;8;8;7] would come up as FALSE as this list contains two 7's and two 8's.
I have had a few ideas as to how to do this problem, and one of them is as a follows:-
If I could somehow subtract every value in the TL of the list from the HD, this would mean that if the list were as follows:-
1-2 = -1
1-3 = -2
1-4 = -3
so if the value of the calculation is 0, then FALSE is displayed as a result.
Now I would need to do thsi recursivly, in order to take the hd(tl(tl(tl(tl(x))))
So it would subtract every number from a 'HD', and so even if the following list was used, the recursive function would work it out:-
I hope that makes sense. Basically I'm having alot of trouble coding it, but I thinik that the method of solving the problem I have come up with will work.
Can anyone give me some advice and/or help?