      "        hanoi(num_disks, src, dest, buff)\n",
      "        assert_equal(dest.pop(), 5)\n",
      "\n",
      "        print('Test: 2 or more disks')\n",
      "        for i in range(num_disks, -1, -1):\n",
      "            src.push(i)\n",
      "        hanoi(num_disks, src, dest, buff)\n",
      "        for i in range(0, num_disks):\n",
      "            assert_equal(dest.pop(), i)\n",
      "\n",
      "        print('Success: test_hanoi')\n",
      "\n",
      "\n",
      "def main():\n",
 
</s>
    "        for disk_index in range(num_disks, -1, -1):\n",
    "            src.push(disk_index)\n",
    "        hanoi.move_disks(num_disks, src, dest, buff)\n",
    "        for disk_index in range(0, num_disks):\n",
    "            assert_equal(dest.pop(), disk_index)\n",
      "        hanoi(num_disks, src, dest, buff)\n",
      "        assert_equal(dest.pop(), 5)\n",
      "\n",
      "        print('Test: 2 or more disks')\n",
    "        for disk_index in range(num_disks, -1, -1):\n",
    "            src.push(disk_index)\n",
    "        hanoi.move_disks(num_disks, src, dest, buff)\n",
    "        for disk_index in range(0, num_disks):\n",
    "            assert_equal(dest.pop(), disk_index)\n",
    "        for disk_index in range(num_disks, -1, -1):\n",
    "            src.push(disk_index)\n",
    "        hanoi.move_disks(num_disks, src, dest, buff)\n",
    "        for disk_index in range(0, num_disks):\n",
    "            assert_equal(dest.pop(), disk_index)\n",
    "        for disk_index in range(num_disks, -1, -1):\n",
    "            src.push(disk_index)\n",
    "        hanoi.move_disks(num_disks, src, dest, buff)\n",
    "        for disk_index in range(0, num_disks):\n",
    "            assert_equal(dest.pop(), disk_index)\n",
    "        for disk_index in range(num_disks, -1, -1):\n",
    "            src.push(disk_index)\n",
    "        hanoi.move_disks(num_disks, src, dest, buff)\n",
    "        for disk_index in range(0, num_disks):\n",
    "            assert_equal(dest.pop(), disk_index)\n",
    "        for disk_index in range(num_disks, -1, -1):\n",
    "            src.push(disk_index)\n",
    "        hanoi.move_disks(num_disks, src, dest, buff)\n",
    "        for disk_index in range(0, num_disks):\n",
    "            assert_equal(dest.pop(), disk_index)\n",
      "\n",
      "        print('Success: test_hanoi')\n",
      "\n",
      "\n",
      "def main():\n",
keep keep keep keep replace replace replace replace replace keep keep keep keep keep
 Update hanoi challenge (#121)

Update constraints and test cases.  Move implementation to a class.  Update tests.
recursion_dynamic/hanoi/hanoi_solution.ipynb