gistfile1.txt

arrayMatrix1 =
[
  [1,  2,  3,  4],
  [5,  6,  7,  8],
  [9,  10, 11, 12],
  [13, 14, 15, 16]
]

arrayMatrix2 =
[
  [1, 2, 3], # 0
  [4, 5, 6], # 1
  [7, 8, 9]  # 2
]

def snail(arrayMatrix)

snail = []
  # top row
  arrayMatrix.first.each do |x|
    snail << x
  end
  arrayMatrix.shift

  # right side
  arrayMatrix.each do |x|
    snail << x.pop
  end

  # bottom row
  arrayMatrix.last.reverse.each do |x|
    snail << x
  end
  arrayMatrix.pop

  # left side
  arrayMatrix.reverse.each do |x|
    snail << x.shift
  end

  if arrayMatrix != []
    arrayMatrix.first.each do |x|
      snail << x
    end
    arrayMatrix.shift
  end

  if arrayMatrix != []
    arrayMatrix.first.reverse.each do |x|
      snail << x
    end
    arrayMatrix.shift
  end

snail.flatten
end


if snail(arrayMatrix1) == [1, 2, 3, 4, 8, 12, 16, 15, 14, 13, 9, 5, 6, 7, 11, 10]
  puts "4 x 4 array = MATCH"
elsif
  puts "NO MATCH"
end

if snail(arrayMatrix2) == [1, 2, 3, 6, 9, 8, 7, 4, 5]
  puts "3 x 3 array MATCH"
elsif
  puts "NO MATCH"
end