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    "https://leetcode.com/problems/single-element-in-a-sorted-array/\n",
    "\n",
    "\n",
    "Runtime: 20 ms, faster than 11.61% of C++ online submissions for Single Element in a Sorted Array.\n",
    "Memory Usage: 10.9 MB, less than 93.74% of C++ online submissions for Single Element in a Sorted Array.\n",
    "\n",
    "\n",
    "```cpp\n",
    "class Solution {\n",
    "public:\n",
    "    int singleNonDuplicate(vector<int>& nums) {\n",
    "        //6:50\n",
    "        if (nums.size() == 1) {\n",
    "            return nums[0];\n",
    "        }\n",
    "        for (int i=0; i < nums.size(); i++) {\n",
    "            if ((i==0) && (i+2 < nums.size())) {\n",
    "                if ((nums[i] != nums[i+1]) && (nums[i+1] == nums[i+2])) {\n",
    "                    return nums[i];\n",
    "                }\n",
    "            }\n",
    "            if ((i-1 >=0) && (i+1 < nums.size())) {\n",
    "                if ((nums[i-1] != nums[i]) && (nums[i] != nums[i+1])) {\n",
    "                    return nums[i];\n",
    "                }\n",
    "            }\n",
    "            if ((i == nums.size()-1) && (i-2>=0)) {\n",
    "                if ((nums[i] != nums[i-1]) && (nums[i-1] == nums[i-2])) {\n",
    "                    return nums[i];\n",
    "                }\n",
    "            }\n",
    "        }\n",
    "        return 0;\n",
    "        //6:57\n",
    "    }\n",
    "};\n",
    "```"
   ]
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