Lesson 9 in ruby for loops and iterators is confusing help

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#1

<PLEASE USE THE FOLLOWING TEMPLATE TO HELP YOU CREATE A GREAT POST!>

<Below this line, add a link to the EXACT exercise that you are stuck at.>
https://www.codecademy.com/courses/ruby-beginner-en-XYcN1/2/2?curriculum_id=5059f8619189a5000201fbcb

<In what way does your code behave incorrectly? Include ALL error messages.>
(ruby):7: syntax error, unexpected $end, expecting keyword_end

```ruby i = 20

loop do
for i in 1…20
next if i -= 2 == 0
print i
break if i <= 0
end

<do not remove the three backticks above>
#2

You are supposed to only use loop do. Mixing two loops together (loop do and for i in) is bad.

In the next statement, your condition has to check if i is odd (how do you check if a number is odd? ;))

You also have to keep subtracting 1 from i each iteration so that the break conditition can be met and the loop hence exited (so that the loop does not become an infinite loop).

1 Like
#3

thanks, I’m sorry \i didn’t see this sooner :slight_smile:

#4

I’m not sure why this isn’t working. Can you give me any hints?

i = 20
loop do
i -= 1
next if i % 2 == 5
print “#{i}”
break if i <= 0
end

Thanks in advanced.

#5

@joe3863,
First of all
you are using the modulo-operator
http://stackoverflow.com/questions/3517238/what-does-the-operator-do-in-ruby-in-n-2

2 Likes
#6

I understand now. I had the wrong remainder for odd numbers divided by 2. Thanks!