From: Daniel Kempkens <Daniel.Kempkens@...>
Date: 2007-06-19T02:45:02+09:00
Subject: Re: Another Easy Beginner Question

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?