top_50_array_questions_gfg.ipynb

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    "# Peak element \n",
    "\n",
    "A peak element in an array is the one that is not smaller than its neighbours.\n",
    "Given an array arr[] of size N, find the index of any one of its peak elements.\n",
    "Note: The generated output will always be 1 if the index that you return is correct. Otherwise output will be 0. \n",
    "\n",
    "\n",
    "Example 1:\n",
    "\n",
    "Input:\n",
    "N = 3\n",
    "arr[] = {1,2,3}\n",
    "Output: 1\n",
    "Explanation: index 2 is 3.\n",
    "It is the peak element as it is \n",
    "greater than its neighbour 2.\n",
    "\n",
    "Example 2:\n",
    "\n",
    "Input:\n",
    "N = 2\n",
    "arr[] = {3,4}\n",
    "Output: 1\n",
    "Explanation: 4 (at index 1) is the \n",
    "peak element as it is greater than \n",
    "its only neighbour element 3.\n"
   ]
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      "1\n"
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    "class Solution:   \n",
    "    def peakElement(self,arr, n):\n",
    "        if len(arr)==1:\n",
    "            return 1\n",
    "        index=-1\n",
    "        for i in range(n-1):\n",
    "            if arr[i]<arr[i+1]:\n",
    "                index=i+1\n",
    "        return index\n",
    "sol = Solution()\n",
    "print(sol.peakElement([15],1))"
   ]
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