說明
這個練習的任務是撰寫程式碼，回傳歌曲「The Twelve Days of Christmas」的歌詞。
「The Twelve Days of Christmas」是一首常見的英文聖誕頌歌。
歌曲中之後的每一段歌詞，都是在前一段的基礎上累加而成。
你的程式碼回傳的歌詞，必須與下方顯示的完整歌曲內容_完全_相符。
歌詞
On the first day of Christmas my true love gave to me: a Partridge in a Pear Tree.
On the second day of Christmas my true love gave to me: two Turtle Doves, and a Partridge in a Pear Tree.
On the third day of Christmas my true love gave to me: three French Hens, two Turtle Doves, and a Partridge in a Pear Tree.
On the fourth day of Christmas my true love gave to me: four Calling Birds, three French Hens, two Turtle Doves, and a Partridge in a Pear Tree.
On the fifth day of Christmas my true love gave to me: five Gold Rings, four Calling Birds, three French Hens, two Turtle Doves, and a Partridge in a Pear Tree.
On the sixth day of Christmas my true love gave to me: six Geese-a-Laying, five Gold Rings, four Calling Birds, three French Hens, two Turtle Doves, and a Partridge in a Pear Tree.
On the seventh day of Christmas my true love gave to me: 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.
On the eighth day of Christmas my true love gave to me: 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.
On the ninth day of Christmas my true love gave to me: 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.
On the tenth day of Christmas my true love gave to me: 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.
On the eleventh day of Christmas my true love gave to me: 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.
On the twelfth day of Christmas my true love gave to me: 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.
提示
你需要實作 recite 函式，它會輸出「The Twelve Days of Christmas」的歌詞。如果你不確定型別，可以使用提供的函式簽章，但別讓它限制了你的創意喔。
這個練習處理的是文字資料。基於歷史因素，Haskell 的 String 型別等同於 [Char]，也就是字元組成的陣列。如果要更有效率地處理文字資料，可以使用 Text 型別。
作為這個練習的選用延伸，你可以
- 閱讀 Haskell 的字串型別。
- 在 package.yaml 的相依清單中加入
- text。
- 依照下列方式匯入
Data.Text：
import qualified Data.Text as T
import Data.Text (Text)
- 例如寫出
recite :: Int -> Int -> [Text]，並以 T.pack 之類的方式取用 Data.Text 的組合子。
- 查閱
Data.Text 的說明文件。
- 把 TwelveDays.hs 中所有
String 都換成 Text，也就是：
recite :: Int -> Int -> [Text]
這個部分完全是選用的。
