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)

You need a def on the front of the above

i = 0

You need a variable to hold the sum, so

result = 0

while i < numbers.length

if (numbers % 2 !== 0)

you meant numbers[i] % 2 != 0

return numbers[i] += 1

Don't return here, add this number to the total

result += numbers[i]

i += 1

end

return result

end

But in fact it is better to use each, not a while loop, so something like

def oddball_sum(numbers)

result = 0

numbers.each { |n| result += n if n %2 != 0 }

return result

end

In fact there are even more concise ways of coding this, but I would

stick with something like the above for the moment in order to keep

the code readable.

I suggest you find some tutorials on Ruby first and work through them,

then when you think you have the basics of Ruby sorted move on to a

good Rails tutorial such as railstutorial.org, which will show you the

basics of Rails.

Colin