Beer_Song

beer_song.rb

@@ -0,0 +1,35 @@
+class BeerSong
+  def verse(num)
+    if num == 1
+      return "#{num} bottle of beer on the wall, #{num} bottle of beer.\n" \
+      "Take it down and pass it around, no more bottles of beer on the wall.\n"
+    elsif num == 0
+       return "No more bottles of beer on the wall, no more bottles of beer.\n" \
+        "Go to the store and buy some more, 99 bottles of beer on the wall.\n"
+    elsif num == 2
+      return "#{num} bottles of beer on the wall, #{num} bottles of beer.\n" \
+      "Take one down and pass it around, #{num - 1} bottle of beer on the wall.\n"
+    else
+      return "#{num} bottles of beer on the wall, #{num} bottles of beer.\n" \
+      "Take one down and pass it around, #{num - 1} bottles of beer on the wall.\n"
+    end
+  end
+  def verses(start_num, end_num)
+    result = ""
+    (start_num.downto(end_num)).each do |i|
+       if i > end_num
+         result << verse(i) + "\n"
+       else
+         result << verse(i)
+      end
+    end
+    result
+  end
+  def lyrics
+    verses(99,0)
+  end
+end
+# p BeerSong.new.verses(99, 97)
+module BookKeeping
+  VERSION = 2
+end