Created
November 6, 2020 22:51
-
-
Save havenwood/4ff383990b5985b05015de9cc2bcc90e to your computer and use it in GitHub Desktop.
Cistercian numerals (See https://en.wikipedia.org/wiki/The_Ciphers_of_the_Monks)
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
# frozen_string_literal: true | |
module Cistercian | |
LINE = %w[■ ■ ■].freeze | |
CENTER_DOT = ' ■ ' | |
GLYPHS = [ | |
[' ', | |
' ', | |
' '], | |
['■■■', | |
' ', | |
' '], | |
[' ', | |
' ', | |
'■■■'], | |
['■ ', | |
' ■ ', | |
' ■'], | |
[' ■', | |
' ■ ', | |
'■ '], | |
['■■■', | |
' ■ ', | |
'■ '], | |
[' ■', | |
' ■', | |
' ■'], | |
['■■■', | |
' ■', | |
' ■'], | |
[' ■', | |
' ■', | |
'■■■'], | |
['■■■', | |
' ■', | |
'■■■'] | |
].each(&:freeze).freeze | |
module_function | |
def cistercian(number) | |
raise ArgumentError, 'Impossibly low' if number.negative? | |
raise ArgumentError, 'Impossibly high' if number > 9999 | |
ones, tens, hundreds, thousands = number.digits | |
lines = [ | |
*upper_glyphs(ones: ones, tens: tens), | |
CENTER_DOT, | |
*lower_glyphs(hundreds: hundreds, thousands: thousands) | |
] | |
lines.join "\n" | |
end | |
def print_cistercian(number) | |
puts cistercian(number) | |
end | |
private_class_method def upper_glyphs(ones:, tens:) | |
GLYPHS.fetch(tens.to_i) | |
.map(&:reverse) | |
.zip(LINE, GLYPHS.fetch(ones.to_i)) | |
.map(&:join) | |
end | |
private_class_method def lower_glyphs(hundreds:, thousands:) | |
GLYPHS.fetch(thousands.to_i) | |
.map(&:reverse) | |
.reverse | |
.zip(LINE, GLYPHS.fetch(hundreds.to_i).reverse) | |
.map(&:join) | |
end | |
end |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
require_relative 'cistercian' | |
include Cistercian | |
print_cistercian 5042 | |
■ ■ | |
■ ■ | |
■■■■■ | |
■ | |
■■ | |
■ ■ | |
■■■■ | |
print_cistercian 9999 | |
■■■■■■■ | |
■ ■ ■ | |
■■■■■■■ | |
■ | |
■■■■■■■ | |
■ ■ ■ | |
■■■■■■■ |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment