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    "# Tree Representation Implementation (Lists)\n",
    "\n",
    "Below is a representation of a Tree using a list of lists. Refer to the video lecture for an explanation and a live coding demonstration!"
   ]
  },
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   "source": [
    "def BinaryTree(r):\n",
    "    return [r, [], []]\n",
    "\n",
    "def insertLeft(root,newBranch):\n",
    "    t = root.pop(1)\n",
    "    if len(t) > 1:\n",
    "        root.insert(1,[newBranch,t,[]])\n",
    "    else:\n",
    "        root.insert(1,[newBranch, [], []])\n",
    "    return root\n",
    "\n",
    "def insertRight(root,newBranch):\n",
    "    t = root.pop(2)\n",
    "    if len(t) > 1:\n",
    "        root.insert(2,[newBranch,[],t])\n",
    "    else:\n",
    "        root.insert(2,[newBranch,[],[]])\n",
    "    return root\n",
    "\n",
    "def getRootVal(root):\n",
    "    return root[0]\n",
    "\n",
    "def setRootVal(root,newVal):\n",
    "    root[0] = newVal\n",
    "\n",
    "def getLeftChild(root):\n",
    "    return root[1]\n",
    "\n",
    "def getRightChild(root):\n",
    "    return root[2]"
   ]
  }
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