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   "source": [
    "# SW05 - InClass - Repetition and Programming - VERSION 2\n",
    "\n",
    "This file is intended for interactive repetition during the first hour in class. You write directly into the code cells."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "***"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Tuple with strings - ordered, non-mutable sequential datatype\n",
    "\n",
    "**Tuples store immutable collections of elements.**\n",
    "\n",
    "A tuple of words is given. The following tasks are required:\n",
    "\n",
    "- Create a tuple named `words` that contains at least 5 different strings (e.g., names, fruits, or random objects).\n",
    "- Print the first and last element of the tuple.\n",
    "- Determine and print the length of the tuple.\n",
    "- Extract a sub-tuple from the second to the fourth element (inclusive) and print it.\n",
    "- Check if a specific word (e.g., \"apple\") is present in the tuple, and print a corresponding message."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "word1 word5\n",
      "5\n",
      "('word2', 'word3')\n",
      "('word2', 'word3', 'word4')\n",
      "True\n",
      "False\n"
     ]
    }
   ],
   "source": [
    "words = (\"word1\", \"word2\", \"word3\", \"word4\", \"word5\")\n",
    "\n",
    "print(words[0],words[-1])\n",
    "\n",
    "print(len(words))\n",
    "\n",
    "print(words[1:3])\n",
    "\n",
    "print(words[1:4])\n",
    "\n",
    "print((\"word1\") in words)\n",
    "\n",
    "print((\"word1\") in words and (\"word7\" in words))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "The given tuple of words from above. Perform the following tasks:\n",
    "\n",
    "- Find and print all elements that contain a specific letter (e.g., \"B\").\n",
    "- Find the longest word in the tuple and print it along with its length.\n",
    "- Create a dictionary where each word in the tuple is a key and its length is the value, and print this dictionary."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Schritt 1: Finde und gib alle Elemente aus, die ein 'B' beinhalten\n",
    "\n",
    "\n",
    "# Schritt 2: Finde das längste Wort und gib es mit seiner Länge aus\n",
    "\n",
    "\n",
    "# Schritt 3: Erstelle ein Dictionary mit Wörtern und ihrer Länge\n",
    "\n"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "***"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Sets - mutable, elements are unique, but can be added, removed\n",
    "\n",
    "**Sets store unique, immutable elements - but sets themselves are mutable.**\n",
    "\n",
    "Write a Python program that takes the lists `list_a` and `list_b` and generates a new set `set_common` which contains the common elements of both lists.\n",
    "\n",
    "Example output in the console:\n",
    "```\n",
    "list_a = [1, 4, 3, 8, 9, 8]\n",
    "list_b = [2, 2, 4, 9, 8]\n",
    "\n",
    ">>> {8, 9, 4}\n",
    "```"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# non efficient way with loops\n",
    "\n",
    "\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# classic way with conversion into sets\n",
    "\n",
    "\n"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "***\n",
    "Write a Python program that takes two lists and generates the symmetric difference of the elements in these two lists as a set, then prints it to the console.\n",
    "\n",
    "Example output in the console:\n",
    "```\n",
    "list_a = [1, 4, 3, 8, 9]\n",
    "list_b = [2, 2, 4, 9, 8]\n",
    "\n",
    ">>> Difference_set: {1, 2, 3}\n",
    "```"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# classic way with conversion into sets\n",
    "\n",
    "\n"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "***"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Dictionary - lookup table of English-Spanish\n",
    "\n",
    "**Dictionaries store key-value pairs.**\n",
    "\n",
    "A lookup table is given with English words and their corresponding Spanish translations.\n",
    "Write a Python program that takes the English sentence stored in `text` and returns the corresponding Spanish sentence. If a word is not in the list, print it in uppercase."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "# lookup table as dictionary given:\n",
    "\n",
    "\n",
    "\n"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "***\n",
    "end"
   ]
  }
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