How do I format an array to break every five elements into new line in ruby?

Question

So I have an array. I want to take the first elements and break them into new line. So my array is =

a = [0, 0, 0, 0, 0, 0, 0, 0 , 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] 

How do I print it as

00000
00000
00000
00000
00000

Thanks.

Answer 1

Just use the each_slice method of the Enumerator class to split your original array into arrays that consist of five elements each and the join method of the Array class to convert the five element arrays to strings:

a.each_slice(5) { |x|
  puts x.join
}

Answer 2

a.each_index do |i|
  puts if i%5 == 0
  print a[i]
end