From: Alex LeDonne <aledonne.listmail@...>
Date: 2007-06-19T02:50:11+09:00
Subject: Re: Another Easy Beginner Question

On 6/18/07, Daniel Kempkens <Daniel.Kempkens@gmail.com> wrote:
> Alex LeDonne schrieb:
> > On 6/18/07, danielj <danielj@sleepingindian.org> wrote:
> >>
> >> There is a song that goes like this:
> >>
> >>     On the first day of Christmas, my true love sent to me a partridge
> >> in a pear tree.
> >>     On the second day of Christmas, my true love sent to me two turtle
> >> doves and a partridge in a pear tree.
> >>     ...
> >>
> >> If this goes on for the 12 days of Christmas. How many presents will
> >> your true love send you over Christmas?
> >> <strong>(Hint: You will need a loop inside another). </strong>
> >>
> >> I don't think you need a loop inside a loop.... Here is what I did:
> >>
> >> day = 0
> >> gifts = 0
> >>
> >> 12.times do
> >>  day = day + 1
> >>  gifts = gifts + day
> >> end
> >>
> >> print gifts
> >>
> >> Does anyone know how you would do it with a <em>loop inside a loop</
> >> em>?
> >
> >
> > Note that your program does not solve the problem (which is easy to
> > misinterpret). To clarify the problem:
> >
> > On day 1, you get 1 gift.
> > On day 2, you get 3 gifts, not two (two doves AND one bird/tree combo).
> > On day 3, you get 6 gifts - 3 hens, 2 doves, one more pear tree
> > w/attendant partridge.
> > and so on... until
> > On day 11 you get 66 gifts, and
> > On day 12 you get 78 gifts.
> >
> >
> > Do you see how a loop within a loop may be helpful?
> >
> > Good luck!
> >
> > -A
> >
> Well, I solved this for fun, my code looks like this:
>
> def gift_counter(max = 12)
>   gifts = 0
>   1.upto(max) do |day|
>    gifts += day # I guess 'day' is a bad var-name here :D
>    puts "Day: {#day}, Gifts: #{gifts}"
>   end
> end
>
> It works quite good, so why does this Quiz-Site suggest to use two
> loops? Am I getting something of this quiz wrong?
>

Well, the original question is:
What is the total number of gifts given over the 12 days?

The gift_counter is good for the number by-the-day, but the question
is asking for a gift_totaler.

-A