Code Golf: Print the entire “12 Days of Christmas” song in the fewest lines of code

Answer 1

Ruby. I think this is pretty concise (the hard work is all on one line):

days = %w{First Second Third Fourth Fifth Sixth Seventh Eighth Ninth Tenth Eleventh Twelfth}

presents = [
    "twelve drummers drumming",
    "eleven pipers piping",
    "ten lords a leaping",
    "nine ladies dancing",
    "eight maids a-milking",
    "seven swans a-swimming",
    "six geese a-laying",
    "five gold rings",
    "four calling birds",
    "three french hens",
    "two turtle doves, and",
    "a partridge in a pear tree"
    ]

0.upto(11) { |i| 
    puts "On the #{days[i]} of Christmas my true love gave to me " + presents.last(i+1).join(", ")
}