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   "source": [
    "Given an unsorted array `nums`, reorder it such that `nums[0] < nums[1] >\n",
    "nums[2] < nums[3]...`.\n",
    "\n",
    "**Example 1:**\n",
    "\n",
    "\n",
    "\n",
    "    Input:nums = [1, 5, 1, 1, 6, 4]\n",
    "    Output: One possible answer is [1, 4, 1, 5, 1, 6].\n",
    "\n",
    "**Example 2:**\n",
    "\n",
    "\n",
    "\n",
    "    Input:nums = [1, 3, 2, 2, 3, 1]\n",
    "    Output: One possible answer is [2, 3, 1, 3, 1, 2].\n",
    "\n",
    "**Note:**\n",
    "You may assume all input has valid answer.\n",
    "\n",
    "**Follow Up:**\n",
    "Can you do it in O(n) time and/or in-place with O(1) extra space?"
   ],
   "metadata": {}
  },
  {
   "outputs": [
    {
     "output_type": "execute_result",
     "data": {
      "text/plain": "wiggle_sort! (generic function with 1 method)"
     },
     "metadata": {},
     "execution_count": 1
    }
   ],
   "cell_type": "code",
   "source": [
    "# @lc code=start\n",
    "using LeetCode\n",
    "\n",
    "function wiggle_sort!(nums::Vector{Int})\n",
    "    len = length(nums)\n",
    "    md = len ÷ 2\n",
    "    partialsort!(nums, md)\n",
    "    nums[1], nums[md] = nums[md], nums[1]\n",
    "    i, j = 2, len\n",
    "    iseven(len) && (j -= 1)\n",
    "    while i <= j\n",
    "        nums[i], nums[j] = nums[j], nums[i]\n",
    "        i += 2\n",
    "        j -= 2\n",
    "    end\n",
    "    return nums\n",
    "end\n",
    "# @lc code=end"
   ],
   "metadata": {},
   "execution_count": 1
  },
  {
   "cell_type": "markdown",
   "source": [
    "---\n",
    "\n",
    "*This notebook was generated using [Literate.jl](https://github.com/fredrikekre/Literate.jl).*"
   ],
   "metadata": {}
  }
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