# 396. Rotate Function LeetCode Solution | Easy Approach Share:

Rotate Function You are given an integer array `nums` of length `n`.

Assume `arrk` to be an array obtained by rotating `nums` by `k` positions clock-wise. We define the rotation function `F` on `nums` as follow:

• `F(k) = 0 * arrk + 1 * arrk + ... + (n - 1) * arrk[n - 1].`

Return the maximum value of `F(0), F(1), ..., F(n-1)`.

The test cases are generated so that the answer fits in a 32-bit integer.

Example 1:

```Input: nums = [4,3,2,6]
Output: 26
Explanation:
F(0) = (0 * 4) + (1 * 3) + (2 * 2) + (3 * 6) = 0 + 3 + 4 + 18 = 25
F(1) = (0 * 6) + (1 * 4) + (2 * 3) + (3 * 2) = 0 + 4 + 6 + 6 = 16
F(2) = (0 * 2) + (1 * 6) + (2 * 4) + (3 * 3) = 0 + 6 + 8 + 9 = 23
F(3) = (0 * 3) + (1 * 2) + (2 * 6) + (3 * 4) = 0 + 2 + 12 + 12 = 26
So the maximum value of F(0), F(1), F(2), F(3) is F(3) = 26.
```

Example 2:

```Input: nums = 
Output: 0
```

Constraints:

• `n == nums.length`
• `1 <= n <= 105`
• `-100 <= nums[i] <= 100`

Time: O(n)
Space: O(n)

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