Leetcode Problem 396. Rotate Function

396. Rotate Function

Leetcode Solutions

Maximize Rotation Function Using Mathematical Insight

  1. Calculate the sum of all elements in the array nums and store it in totalSum.
  2. Calculate the initial value of the rotation function F(0) by summing up i * nums[i] for all i from 0 to n-1.
  3. Initialize maxValue with the value of F(0).
  4. Iterate over the array starting from the second element to the end. a. Update the rotation function value F(k) based on the previous value F(k-1) using the formula F(k) = F(k-1) + totalSum - n * nums[n-k]. b. Update maxValue if F(k) is greater than the current maxValue.
  5. Return maxValue as the maximum value of the rotation function.
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Brute Force Rotation Function Calculation

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