playing with gists

rotate matrix

def rotate_matrix(matrix)
  
  output = Array.new(matrix.count) { Array.new(matrix.count) }

  matrix.each_with_index do |mat, i|
    j = matrix.count - 1
    matrix[i].each do |n|      
      output[j][i] = n
      j -= 1
    end
    
  end
  
  return output
  
end


matrix = []
matrix[0] = [1,2,3,4]
matrix[1] = [5,6,7,8]
matrix[2] = [9,10,11,12]
matrix[3] = [13,14,15,16]

puts rotate_matrix(matrix).inspect