Day03_LEETCODE_413. Arithmetic Slices.ipynb

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    "class Solution(object):\n",
    "    def numberOfArithmeticSlices(self, nums):\n",
    "        \"\"\"\n",
    "        :type nums: List[int]\n",
    "        :rtype: int\n",
    "        \"\"\"\n",
    "        subarrcount=0\n",
    "        nums_len= len(nums)\n",
    "        if nums_len>=3:\n",
    "            for i in range(nums_len-1):                \n",
    "                elemcount=2         \n",
    "                diff=nums[i] - nums[i+1]\n",
    "                j=i+2\n",
    "                while j < nums_len:                  \n",
    "                    if nums[j-1] - nums[j] ==diff: \n",
    "                        elemcount+=1\n",
    "                        if elemcount>=3: subarrcount+=1\n",
    "                        j+=1\n",
    "                    else: break                              \n",
    "        elif nums_len<3:\n",
    "            subarrcount=0\n",
    "        return subarrcount\n",
    "solution = Solution()            \n",
    "solution.numberOfArithmeticSlices([1,2,3,4])"
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