You Don't Need to Count Array Offsets by Hand

When you need both the item and its index while iterating over an array in Ruby, don't do this:

index = 0
for item in array
  index += 1
  puts "Item #{index}: #{item.inspect}"
end

Do this instead:

array.each_with_index do |item, index|
  puts "Item #{index}: #{item.inspect}"
end

Ruby's Enumerable module is full of handy methods like this. Take a few minutes to read through the documentation — your code will be better for it.