Textonyms

Textonyms is a draft programming task. It is not yet considered ready to be promoted as a complete task, for reasons that should be found in its talk page.

When entering text on a phone's digital pad it is possible that a particular combination of digits corresponds to more than one word. Such are called textonyms.

Assuming the keys are as follows:

    2 -> ABC
    3 -> DEF
    4 -> GHI
    5 -> JKL
    6 -> MNO
    7 -> PQRS
    8 -> TUV
    9 -> WXYZ  

The task is to write a program that finds textonyms in this list of words Textonyms/wordlist

Extra credit:

Use a word list and keypad mapping other than English.

Ruby

<lang ruby>

1. Textonyms: Nigel Galloway February 4th., 2015.

Textonymes = Hash.new {|n, g| n[g] = [] } File.open("Textonyms.txt") do |file|

 file.each_line {|line|
   Textonymes[(n=line.chomp).gsub(/a|b|c|A|B|C/, '2').gsub(/d|e|f|D|E|F/, '3').gsub(/g|h|i|G|H|I/, '4').gsub(/p|q|r|s|P|Q|R|S/, '7')
                     .gsub(/j|k|l|J|K|L/, '5').gsub(/m|n|o|M|N|O/, '6').gsub(/t|u|v|T|U|V/, '8').gsub(/w|x|y|z|W|X|Y|Z/, '9')] += [n]
 }

end </lang>

Output:

puts Textonymes["7353284667"]

rejections
selections

puts Textonymes["736672"]

remora
senora