Ruby on Rails

You win all the points. That is slick!

Walter

On Aug 4, 2015, at 8:51 AM, Elizabeth McGurty <emcgurty2@gmail.com> wrote:

> When I looked at your code sample, I immediately thought that I should look at the Ruby Integer, Emumerable and Array API. I reviewed them....
> On review of the Ruby Integer API revealed the method .odd?
> On review of the Ruby Array API revealed the methods .select
> On review of the Ruby Enumerable API revealed the methods .reduce
>
> So I built the solution, but from what I learned that are many possibilities, and admittedly this solutions may not be the best or the fastest
>
> my_odd_ball_sum = numbers.select {|n| n.odd?}.reduce(:+)
>
> Breakdown...
>
> numbers.select
> select { |item| block } → new_ary
> select → Enumerator
> Returns a new array containing all elements of ary for which the given block returns a true value.
>
>
>
> numbers.select {|n| n.odd?} returns an Enumerator, so then apply reduce(:+)
>
> reduce(sym) → obj
> Combines all elements of enum by applying a binary operation, specified by a block or a symbol that names a method or operator.
>
>
>
> My point is that it is a good idea/investment to explore Ruby API for solutions.
> Hope this helps
> Liz
>
>
> On Monday, August 3, 2015 at 10:57:08 PM UTC-4, Ruby-Forum.com User wrote:
> Hi,
>
> I am new to Ruby on Rails. I am practicing problems to better
> understand coding. I understand the logic but I am not able to put in
> proper codes. Could someone please solve the following problem for me?
>
> oddball_sum
> Write a function oddball_sum(numbers), which takes in an array of
> integers and returns the sum of all the odd elements.
>
> oddball_sum(numbers)
> i = 0
> while i < numbers.length
> if (numbers % 2 !== 0)
> return numbers[i] += 1
> i += 1
> end
> return result
> end
>
> --
> Posted via http://www.ruby-forum.com/.
>
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