def isort(a)
  for i in 1..(a.length - 1)
    v = a[i]
    j = i
    while (a[j-1] > v) and (j > 0)
      a[j] = a[j-1]
      j = j - 1
    end
    a[j] = v
    print(a)
    puts()  
  end
  return a
end

a = Array.new(19) { rand(1..10) }
isort(a)