mapcorrespondingindex.ipynb

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     "text": [
      "[0, 1, 1, 0, 2]\n"
     ]
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   "source": [
    "lst = [12345,56789,56789,12345,789]\n",
    "\n",
    "# create a dictionary to map unique values to indices\n",
    "value_to_index = {}\n",
    "index = 0\n",
    "for value in lst:\n",
    "    if value not in value_to_index:\n",
    "        value_to_index[value] = index\n",
    "        index += 1\n",
    "\n",
    "# replace each value in the list with its corresponding index\n",
    "indexed_lst = [value_to_index[value] for value in lst]\n",
    "\n",
    "print(indexed_lst) # [0, 1, 1, 0]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[0, 2, 2, 0]\n",
      "[2, 0, 1, 2]\n"
     ]
    }
   ],
   "source": [
    "lst1 = [12345,56789,56789,12345]\n",
    "lst2 = [56789,12345,67890,56789]\n",
    "\n",
    "# find the unique values in both lists\n",
    "unique_values = list(set(lst1 + lst2))\n",
    "\n",
    "# create a dictionary to map unique values to indices\n",
    "value_to_index = {}\n",
    "index = 0\n",
    "for value in unique_values:\n",
    "    value_to_index[value] = index\n",
    "    index += 1\n",
    "\n",
    "# replace each value in the lists with its corresponding index\n",
    "indexed_lst1 = [value_to_index[value] for value in lst1]\n",
    "indexed_lst2 = [value_to_index[value] for value in lst2]\n",
    "\n",
    "print(indexed_lst1) # [0, 1, 1, 0]\n",
    "print(indexed_lst2) # [1, 0, 2, 1]"
   ]
  }
 ],
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