transverse spiral all element of matrix

matrix.rb

module Matrix
  class << self

    def to_spiral(input_array)

      array_length = input_array.length

      # return element itself if array length is 1

      return input_array[0][0] if array_length == 1

      # array length greater than 1 

      i = 0
      j = array_length-1

      while( i < j)
        
        k = i
        while(k < j) do
          print input_array[i][k]
          k += 1
        end

        m = i
        while(m < j) do
          print input_array[m][j]
          m += 1
        end

        n = j
        while(n > i) do
          print input_array[j][n]
          n -= 1
        end

        o = j
        while(o > i) do
          print input_array[o][i]
          o -= 1
        end

        i += 1
        j -= 1

      end

      # mertix dimension check for even and odd
      if array_length.even?

      else
        mid = array_length/2
        print input_array[mid][mid]
      end

    end
  end

end