COS226-HW2/HW2a.ipynb

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   "cell_type": "markdown",
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   "source": [
    "# COS226 - HW2a\n",
    "## NICHOLAS PEASE"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [],
   "source": [
    "class LinkedListNode:\n",
    "    def __init__(self, payload):\n",
    "        self.payload = payload\n",
    "        self.next = None\n",
    "    def setNext(self, next):\n",
    "        self.next = next\n",
    "    def getNext(self):\n",
    "        return self.next\n",
    "    def read(self):\n",
    "        return self.payload\n",
    "    def write(self, payload):\n",
    "        self.payload = payload"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Linked List Class\n",
    "class LinkedList:\n",
    "\n",
    "    # Initialize LinkedList with no next item and a payload set at creation\n",
    "    # self: Class\n",
    "    # payload: Any information to load to npde\n",
    "    def __init__(self):\n",
    "        self.head = None\n",
    "        self.tail = None\n",
    "        self.size = 0\n",
    "\n",
    "    # Create next LinkedList node and initalize value\n",
    "    # self: Class\n",
    "    # nextPayload: Payload to load to new element\n",
    "    def add(self, nextPayload):\n",
    "        newNode = LinkedListNode(nextPayload)\n",
    "        if self.head == None:\n",
    "            self.head = newNode\n",
    "            self.tail = newNode\n",
    "        else:\n",
    "            self.tail.setNext(newNode)\n",
    "            self.tail = newNode\n",
    "        self.size += 1\n",
    "\n",
    "    def getTail(self):\n",
    "        return self.tail\n",
    "    \n",
    "    def getHead(self):\n",
    "        return self.head\n",
    "    \n",
    "    def getSize(self):\n",
    "        return self.size\n",
    "\n",
    "    # Returns entire linked list as a string\n",
    "    # self: Class\n",
    "    # ret: <String> all items in LinkedList from node onward\n",
    "    def toString(self):\n",
    "        node = self.head\n",
    "        returnString = \"\"\n",
    "        while node.getNext() != None:\n",
    "            returnString += f\"{str(node.read())}, \"\n",
    "            node = node.getNext()\n",
    "        return returnString + str(node.read())"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Merge two unsorted LinkedLists\n",
    "# listAStart: first node of first LinkedList\n",
    "# listBStart: first node of second LinkedList\n",
    "def mergeLists(listA, listB):\n",
    "    newList = LinkedList()\n",
    "    currentElement = listA.getHead()\n",
    "    while currentElement != None:\n",
    "        newList.add(currentElement.read())\n",
    "        currentElement = currentElement.getNext()\n",
    "    currentElement = listB.getHead()\n",
    "    while currentElement != None:\n",
    "        newList.add(currentElement.read())\n",
    "        currentElement = currentElement.getNext()\n",
    "    \n",
    "    return newList"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "List A: [0, 6, 8, 10, 1, 9, 9, 7, 1]\n",
      "List A Size: 9\n",
      "\n",
      "List B: [5, 6, 1, 4, 0, 3, 1, 8, 6]\n",
      "List B Size: 9\n",
      "\n",
      "Merged: [0, 6, 8, 10, 1, 9, 9, 7, 1, 5, 6, 1, 4, 0, 3, 1, 8, 6]\n",
      "Merged List Size: 18\n",
      "\n"
     ]
    }
   ],
   "source": [
    "import random\n",
    "\n",
    "# Two linked lists\n",
    "linkedlistA = LinkedList()\n",
    "linkedlistB = LinkedList()\n",
    "\n",
    "# Initalize list A\n",
    "for i in range(1,10):\n",
    "    linkedlistA.add(random.randint(0,10))\n",
    "\n",
    "# Initialize list B\n",
    "for i in range(1,10):\n",
    "    linkedlistB.add(random.randint(0,10))\n",
    "\n",
    "# Print both lists\n",
    "print(f\"List A: [{linkedlistA.toString()}]\\nList A Size: {linkedlistA.getSize()}\\n\")\n",
    "print(f\"List B: [{linkedlistB.toString()}]\\nList B Size: {linkedlistA.getSize()}\\n\")\n",
    "\n",
    "# Mere Lists and Print Output\n",
    "merged = mergeLists(linkedlistA, linkedlistB)\n",
    "print(f\"Merged: [{merged.toString()}]\\nMerged List Size: {merged.getSize()}\\n\")"
   ]
  }
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