def print_rechteck(x, y, breite)
	start = Time.now
	y.times do |ay|
		arr = Array.new(x, " ")
		if ay < breite or ay >= y - breite
			puts "#" * x
		else
			((1..breite).to_a + ((x - breite + 1)..x).to_a).each {|i| arr[i-1] = "#"}
			puts arr.join
		end
	end
	puts Time.now - start
end
print_rechteck(120,1000,2)