Skip to content

Commit 16e3fb1

Browse files
keiravillekodekeiravillekode
authored
Add twelve-days (#485)
1 parent 3eb78d6 commit 16e3fb1

File tree

7 files changed

+481
-0
lines changed

7 files changed

+481
-0
lines changed

‎config.json

Lines changed: 8 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -628,6 +628,14 @@
628628
"prerequisites": [],
629629
"difficulty": 4
630630
},
631+
{
632+
"slug": "twelve-days",
633+
"name": "Twelve Days",
634+
"uuid": "de31fc58-e80b-485f-9370-5409bb229cd8",
635+
"practices": [],
636+
"prerequisites": [],
637+
"difficulty": 4
638+
},
631639
{
632640
"slug": "affine-cipher",
633641
"name": "Affine Cipher",

‎exercises/practice/twelve-days/.docs/instructions.md

Lines changed: 36 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,36 @@
1+
# Instructions
2+
3+
Your task in this exercise is to write code that returns the lyrics of the song: "The Twelve Days of Christmas."
4+
5+
"The Twelve Days of Christmas" is a common English Christmas carol.
6+
Each subsequent verse of the song builds on the previous verse.
7+
8+
The lyrics your code returns should _exactly_ match the full song text shown below.
9+
10+
## Lyrics
11+
12+
```text
13+
On the first day of Christmas my true love gave to me: a Partridge in a Pear Tree.
14+
15+
On the second day of Christmas my true love gave to me: two Turtle Doves, and a Partridge in a Pear Tree.
16+
17+
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.
18+
19+
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.
20+
21+
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.
22+
23+
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.
24+
25+
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.
26+
27+
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.
28+
29+
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.
30+
31+
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.
32+
33+
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.
34+
35+
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.
36+
```

‎exercises/practice/twelve-days/.meta/config.json

Lines changed: 19 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,19 @@
1+
{
2+
"authors": [
3+
"keiravillekode"
4+
],
5+
"files": {
6+
"solution": [
7+
"twelve-days.el"
8+
],
9+
"test": [
10+
"twelve-days-test.el"
11+
],
12+
"example": [
13+
".meta/example.el"
14+
]
15+
},
16+
"blurb": "Output the lyrics to 'The Twelve Days of Christmas'.",
17+
"source": "Wikipedia",
18+
"source_url": "https://en.wikipedia.org/wiki/The_Twelve_Days_of_Christmas_(song)"
19+
}

‎exercises/practice/twelve-days/.meta/example.el

Lines changed: 39 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,39 @@
1+
;;; twelve-days.el --- Twelve Days (exercism) -*- lexical-binding: t; -*-
2+
3+
;;; Commentary:
4+
5+
;;; Code:
6+
7+
(defconst ordinals ["" "first" "second" "third" "fourth" "fifth" "sixth"
8+
"seventh" "eighth" "ninth" "tenth" "eleventh" "twelfth"])
9+
10+
(defconst gifts
11+
"twelve Drummers Drumming, \
12+
eleven Pipers Piping, \
13+
ten Lords-a-Leaping, \
14+
nine Ladies Dancing, \
15+
eight Maids-a-Milking, \
16+
seven Swans-a-Swimming, \
17+
six Geese-a-Laying, \
18+
five Gold Rings, \
19+
four Calling Birds, \
20+
three French Hens, \
21+
two Turtle Doves, \
22+
and a Partridge in a Pear Tree.")
23+
24+
(defconst table [0 235 213 194 174 157 137 113 90 69 48 26 0])
25+
26+
(defun lyrics (verse)
27+
(concat
28+
"On the "
29+
(aref ordinals verse)
30+
" day of Christmas my true love gave to me: "
31+
(substring gifts (aref table verse))))
32+
33+
(defun recite (start-verse end-verse)
34+
(when (<= start-verse end-verse)
35+
(cons (lyrics start-verse) (recite (1+ start-verse) end-verse))))
36+
37+
(provide 'house)
38+
;;; house.el ends here
39+

‎exercises/practice/twelve-days/.meta/tests.toml

Lines changed: 55 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,55 @@
1+
# This is an auto-generated file.
2+
#
3+
# Regenerating this file via `configlet sync` will:
4+
# - Recreate every `description` key/value pair
5+
# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
6+
# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
7+
# - Preserve any other key/value pair
8+
#
9+
# As user-added comments (using the # character) will be removed when this file
10+
# is regenerated, comments can be added via a `comment` key.
11+
12+
[c0b5a5e6-c89d-49b1-a6b2-9f523bff33f7]
13+
description = "verse -> first day a partridge in a pear tree"
14+
15+
[1c64508a-df3d-420a-b8e1-fe408847854a]
16+
description = "verse -> second day two turtle doves"
17+
18+
[a919e09c-75b2-4e64-bb23-de4a692060a8]
19+
description = "verse -> third day three french hens"
20+
21+
[9bed8631-ec60-4894-a3bb-4f0ec9fbe68d]
22+
description = "verse -> fourth day four calling birds"
23+
24+
[cf1024f0-73b6-4545-be57-e9cea565289a]
25+
description = "verse -> fifth day five gold rings"
26+
27+
[50bd3393-868a-4f24-a618-68df3d02ff04]
28+
description = "verse -> sixth day six geese-a-laying"
29+
30+
[8f29638c-9bf1-4680-94be-e8b84e4ade83]
31+
description = "verse -> seventh day seven swans-a-swimming"
32+
33+
[7038d6e1-e377-47ad-8c37-10670a05bc05]
34+
description = "verse -> eighth day eight maids-a-milking"
35+
36+
[37a800a6-7a56-4352-8d72-0f51eb37cfe8]
37+
description = "verse -> ninth day nine ladies dancing"
38+
39+
[10b158aa-49ff-4b2d-afc3-13af9133510d]
40+
description = "verse -> tenth day ten lords-a-leaping"
41+
42+
[08d7d453-f2ba-478d-8df0-d39ea6a4f457]
43+
description = "verse -> eleventh day eleven pipers piping"
44+
45+
[0620fea7-1704-4e48-b557-c05bf43967f0]
46+
description = "verse -> twelfth day twelve drummers drumming"
47+
48+
[da8b9013-b1e8-49df-b6ef-ddec0219e398]
49+
description = "lyrics -> recites first three verses of the song"
50+
51+
[c095af0d-3137-4653-ad32-bfb899eda24c]
52+
description = "lyrics -> recites three verses from the middle of the song"
53+
54+
[20921bc9-cc52-4627-80b3-198cbbfcf9b7]
55+
description = "lyrics -> recites the whole song"

0 commit comments

Comments
 (0)