phase 0 unit 2 week 1 boggle class challenge

0.2.1-boggle_class_from_methods.rb

class BoggleBoard
    def initialize(board)
		@board=board
	end	

	def create_word(*coords)
	  coords.map { |coord| @board[coord.first][coord.last]}.join("")
	end
	 
	def get_row(row)
	  @board[row]
	end 
	 
	def get_col(col)
	  column=[]
	  @board.each{|a| column.push(a[col])}
	  return column
	end

	def get_diagonal(first,last)
		diagonal=[]
		if last[0]-first[0] != last[1]-first[1] then raise "not a diagonal" end
		for i in first[0]..last[0]
			diagonal.push(@board[i][first[1]+i])
		end	
		diagonal
	end	
end
dice_grid = [["b", "r", "a", "e"],
             ["i", "o", "d", "t"],
             ["e", "c", "l", "r"],
             ["t", "a", "k", "e"]]

boggle_board = BoggleBoard.new(dice_grid)
puts boggle_board.create_word([2,1], [1,1], [1,2], [0,3])  #=> returns "code"  
puts boggle_board.create_word([0,1], [0,2], [1,2])  #=> creates what california slang word?
puts boggle_board.create_word([2,0], [3,1], [3,0])
puts boggle_board.create_word([2,1], [3,1], [3,0])
puts boggle_board.get_row(1) #=>  ["i", "o", "d", "t"]
puts boggle_board.get_col(1)  #=>  ["r", "o", "c", "a"]
puts boggle_board.get_diagonal([0,0],[3,3])
puts boggle_board.get_diagonal([0,0],[3,2])