Sorting with control flow

#1

can you check my code?

``````def alphabetize (arr, rev=false)
arr.sort!
if rev == true
arr.reverse!
end
end
numbers = [5,1,3,8]

alphabetize (numbers)
puts numbers``````

Replace this line with your code.

`

#2

``````def alphabetize (arr, rev=false)
arr.sort!
if rev == true
arr.reverse!
end
end
numbers = [5,1,3,8]

alphabetize (numbers,true)
puts numbers.map(&:inspect).join(',')
alphabetize (numbers)
puts numbers.map(&:inspect).join(',')``````

which gives the output

``````8,5,3,1
1,3,5,8``````

#3

I get this error message:
(ruby):10: syntax error, unexpected ',', expecting ')'
alphabetize (numbers,true)

#4

Please give the full code you are using....

#5

I get this error message when I try it. can you help?

(ruby):9: syntax error, unexpected ',', expecting ')'
alphabetize (numbers,true)

``````def alphabetize (arr, rev=false)
arr.sort!
if rev == true
arr.reverse!
end
end

numbers = [5,1,3,8]

alphabetize (numbers,true)
puts numbers.map(&:inspect).join(',')
alphabetize (numbers)
puts numbers.map(&:inspect).join(',')``````

#6

I attached the code on the last reply (after the one with the error code)

#7

here's the code:

``````def alphabetize(arr, rev=false)
if rev
arr.sort { |item1, item2| item2 <=> item1 }
else
arr.sort { |item1, item2| item1 <=> item2 }
end
end

numbers = [5,1,3,8]

alphabetize (numbers,true)
puts numbers.map(&:inspect).join(',')
alphabetize (numbers)
puts numbers.map(&:inspect).join(',')``````

#8

sorry I put the wrong code in the previous reply it should be as follows:

``````def alphabetize (arr, rev=false)
arr.sort!
if rev == true
arr.reverse!
end
end

numbers = [5,1,3,8]

alphabetize (numbers,true)
puts numbers.map(&:inspect).join(',')
alphabetize (numbers)
puts numbers.map(&:inspect).join(',')``````