Nayshins

hash = { "C" => [[0,1],[0,3]],
         "O" => [[0,2],[1,0]],
         "M" => [[1,3], [2,0]],
         "E" => [[0,0], [2,2]]
       }

#puts hash["C"]
arr = []
hash.each_key { |key|
arr << hash[key]}

Nayshins

def gen_index(num_ele)
  arr = []
  num_ele.times do |index|
    arr = add_index(arr, index)
  end
  arr
end

def add_index(arr, index)
  arr + arr.reverse.map { |ele| ele.dup << index } << [index]

Nayshins

class BoggleBoard

  def initialize(board)
  	@board = board
  end
  
  def create_word(*coords)
  	coords.map { |coord| @board[coord.first][coord.last]}.join("")
  end