#!/usr/bin/env ruby

# better ruby form of what you had..
bottles = 99
while bottles != 0
  puts "#{bottles} bottles of beer on the wall #{bottles} bottles of beer on the wall"
  bottles -= 1
  puts "Take one down, pass it around, #{bottles} bottles of beer on the wall."
end

# more rubyish way to do it...
99.downto(1) do |i|
  puts "#{i} bottles of beer on the wall " * 2
  puts "Take one down, pass it around, #{i - 1} bottles of beer on the wall."
end

# or my code golf solution...
c=' on the wall'
def v(i)"#{i} bottle#{i>1?'s':''} of beer"end
99.downto(1){|i|print s=v(i),c,', ',s,".
",i>1?"Take one down and pass it around, ":"Go to the store and buy some more, ",v(i>1?i-1:99),c,i>1?".

":"."}

# long hand form
c=' on the wall'
def bottles_line(i)
  "#{i} bottle#{i > 1 ? 's' : ''} of beer"
end

99.downto(1) do |i|
  str = bottles_line(i)
  puts "#{str}#{c}, #{str}."
  if i > 1
    puts "Take one down and pass it around, #{bottles_line(i - 1)}."
  else
    print "Go to the store and buy some more, #{bottles_line(99)}."
  end
end


# more fun
template = "%d bottles of beer on the wall, %d bottles of beer"
99.downto(1) { |i| puts template % [i,i] }