dict-compose-code-4连码离散

#!/bin/env ruby

$map = {}

File.open("#{File.dirname $0}/char-map").readlines(chomp: true).map do |line|
  s = line.split(' ')
  $map[s[0]] = s[1]
end

# @param word [String]
def compose(word)
  # abort('length should be >= 2') unless word.length >= 2
  case word.length
  when 2
    fail
  when 3
    fail
  else
    $map[word[0]][0] + $map[word[1]][1] + $map[word[2]][1] + $map[word.chars.last][0]
  end
end

STDIN.each_line(chomp: true) do |line|
  next if line.length < 2
  begin
    puts "#{line}\t#{compose(line)}"
  rescue
    puts "#{line}\t?"
  end
end