scrabble.rb

$points = {}

def points(array, val)
  array.each do |x|
    $points[x] = val
  end
end

points(%w{A E I L N O R S T U}, 1)
points(%w{D G}, 2)
points(%w{B C M P}, 3)
points(%w{F H V W Y}, 4)
$points['K'] = 5
points(%w{J X}, 8)
points(%w{D G}, 7)
points(%w{Q Z}, 10)

def word_score(w)
  w.chars.map { |c| $points[c] }.reduce(:+)
end

puts word_score('STINKER')