Split to the same string length
text = "1234567890123"
width = 3
# (0..text.size).step(width) {|start|
# puts text[start, width]
# }
res = ((0..text.size).step(width).map { |start| text[start, width] }).join " "
puts res
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text = "1234567890123"
width = 3
# (0..text.size).step(width) {|start|
# puts text[start, width]
# }
res = ((0..text.size).step(width).map { |start| text[start, width] }).join " "
puts res