     "metadata": {},
     "source": [
      "## Problem: Remove duplicates from a linked list\n",
      "\n",
      "* [Constraints and Assumptions](#Constraints-and-Assumptions)\n",
      "* [Test Cases](#Test-Cases)\n",
      "* [Algorithm: Hash Map Lookup](#Algorithm:-Hash-Map-Lookup)\n",
      "* [Code: Hash Map Lookup](#Code:-Hash-Map-Lookup)\n",
      "* [Algorithm: In-Place](#Algorithm:-In-Place)\n",
      "* [Code: In-Place](#Code:-In-Place)\n",
 
</s> remove     "* [Constraints and Assumptions](#Constraints-and-Assumptions)\n",
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 </s> add     "* [Constraints](#Constraints)\n", </s> remove     "* [Constraints and Assumptions](#Constraints-and-Assumptions)\n",
 </s> add     "* [Constraints](#Constraints)\n",
    "* [Constraints](#Constraints)\n",
     "metadata": {},
     "source": [
      "## Problem: Remove duplicates from a linked list\n",
      "\n",
    "* [Constraints](#Constraints)\n",
      "* [Test Cases](#Test-Cases)\n",
      "* [Algorithm: Hash Map Lookup](#Algorithm:-Hash-Map-Lookup)\n",
      "* [Code: Hash Map Lookup](#Code:-Hash-Map-Lookup)\n",
      "* [Algorithm: In-Place](#Algorithm:-In-Place)\n",
      "* [Code: In-Place](#Code:-In-Place)\n",
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 Fixed Constraints section label and link anchor. 
linked_lists/remove_duplicates/remove_duplicates.ipynb